EP2915698B1 - Led light - Google Patents

Led light Download PDF

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Publication number
EP2915698B1
EP2915698B1 EP15157160.1A EP15157160A EP2915698B1 EP 2915698 B1 EP2915698 B1 EP 2915698B1 EP 15157160 A EP15157160 A EP 15157160A EP 2915698 B1 EP2915698 B1 EP 2915698B1
Authority
EP
European Patent Office
Prior art keywords
led
holder
board
receptacle
reflector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15157160.1A
Other languages
German (de)
French (fr)
Other versions
EP2915698A1 (en
Inventor
Karl-Josef Müller
Michael Franzke
David Duhme
Werner Kösters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
HDO Druckguss und Oberflaechentechnik GmbH
Original Assignee
Hella GmbH and Co KGaA
HDO Druckguss und Oberflaechentechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hella GmbH and Co KGaA, HDO Druckguss und Oberflaechentechnik GmbH filed Critical Hella GmbH and Co KGaA
Priority to EP15157160.1A priority Critical patent/EP2915698B1/en
Publication of EP2915698A1 publication Critical patent/EP2915698A1/en
Application granted granted Critical
Publication of EP2915698B1 publication Critical patent/EP2915698B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an LED light, in particular LED vehicle headlights, with a light unit or several light units, each light unit having a light source in the form of an LED board with a luminous surface and an optical device assigned to the light source with at least one reflector and / or at least one lens.
  • LED lights are increasingly replacing other lights because they are more durable and emit comparatively little heat radiation.
  • Main headlights are now also being used in the field of motor vehicle lighting, which implement the low beam using LED technology or are even designed as full LED headlights and thus replace conventional xenon headlights.
  • the implementation of the low beam in LED technology usually requires that four lighting units with LEDs and these associated optical devices in the form of reflectors and / or lenses are provided, with two lighting units each consisting of LEDs and associated optical device for illuminating the apron and two lighting units are responsible for the range.
  • LED boards are used as the LED lighting means, which have a flat substrate which is equipped with the required LEDs and possibly other electronic components.
  • connection surfaces via which the LED boards can be connected to lines.
  • the connection surfaces are tinned copper surfaces that are used for soldering lines. The LEDs then form a luminous surface on the LED boards.
  • the LEDs When used in the main headlights of vehicles, the LEDs must be positioned with great precision opposite the reflectors, which places high demands on production. For this reason, LED main headlights of vehicles are completely adjusted during manufacture. This has the disadvantage that the lamps cannot be replaced. Correspondingly, it is often necessary to replace the entire headlamp if the lamp is defective.
  • a vehicle lamp with a lighting unit which comprises an LED board with a luminous surface and an associated optical device with a reflector.
  • Elastic pressure means are provided which act on the LED circuit board in order to press it in the direction of the reflector and thus cause the LED circuit board to be positioned in one direction.
  • the US 2007/109806 A1 discloses a further vehicle lamp with a lighting unit which comprises an LED circuit board with a luminous surface and an associated optical device with a reflector and a lens.
  • the circuit board holder defines a receptacle in which the LED circuit board is positioned.
  • elastic pressure means are provided on the circuit board holder, which pressurize the LED circuit board in order to fix the LED circuit board in the circuit board holder.
  • a lamp unit with a reflector arrangement and an LED lamp which can be pushed into the reflector arrangement is known.
  • a reflector arrangement for an LED lamp is from the EP2317213 A2 known.
  • the object of the present invention is therefore to design an LED light, in particular an LED vehicle headlight of the type mentioned at the outset, in such a way that the positioning of the LED boards and thus the luminous surfaces compared to the assigned reflectors simplified and thus the assembly is facilitated. In particular, it should also be possible to exchange the lighting means.
  • a reflector holder which carries the optical devices of the existing lamp unit or lamp units and, in particular, is designed in one piece with a circuit board holder which is detachably fastened to the reflector holder is that the circuit board holder has a receptacle for each lamp unit in which the LED circuit board of the lamp unit is positioned, the LED circuit board having contact surfaces that come into contact with corresponding contact surfaces on the reflector holder to the LED circuit board in the receptacle to be positioned with respect to the associated optical device in all directions, if the circuit board holder is fixed to the reflector holder, and that elastic pressure means are assigned to each lamp unit, which are provided on the circuit board holder and / or the reflector holder and act on the LED board of the lamp unit in order to press its contact surfaces against the contact surfaces of the reflector holder when the Board holder is fixed to the reflector holder.
  • the LED luminaire according to the invention thus comprises two main structural components, namely on the one hand the reflector holder, which carries the optical devices, and on the other hand the circuit board holder, which is detachably connected to the reflector holder.
  • the LED boards are inserted into the mounts of the board holder and are pre-positioned in them.
  • the final positioning of the circuit board holder only takes place when the circuit board holder is mounted on the reflector holder.
  • the LED boards and the reflector holder have contact surfaces that correspond to one another which come into contact with one another in the assembled state and ensure that the LED boards are positioned in all directions with respect to the reflector holder and thus with respect to the reflectors assigned to them.
  • Elastic pressure means ensure that the contact surfaces of the LED boards are pressed against the corresponding contact surfaces of the reflector holder.
  • the circuit board holder only needs to be detached from the reflector holder. Then either individual LED boards can be exchanged. Alternatively, the entire circuit board holder can be exchanged with the LED circuit boards. In this case, the control electronics for the LED boards are expediently provided on the board holder.
  • the reflector holder and the reflectors are preferably designed in one piece, so that they can be produced as a cast part, for example. In this way, manufacturing tolerances can be minimized. At the same time, the heat dissipation from the LED boards is promoted. Since the LED circuit boards are only prepositioned on the reflector holder via the circuit board holder, the demands on the manufacturing tolerances for the circuit board holder are not high, so that it can be manufactured inexpensively.
  • each receptacle for an LED circuit board is to a front end face of the circuit board holder is open and the associated LED board protrudes from the receptacle at the open end, the contact surfaces of the LED boards for positioning the LED boards in relation to the respective associated optical device being formed on the end section of the LED board protruding from the receptacle.
  • the circuit board holder preferably has a circuit board holder body and each lamp unit is assigned a support arm which protrudes in a straight line from the front of the circuit board holder body, the receptacle for the LED circuit board of the lamp unit being formed on the free, front end portion of the support arm.
  • the carrier arm of each lamp unit is assigned a corresponding carrier receptacle in the reflector holder, into which the carrier arm is or can be inserted in a straight line from the rear of the reflector holder, the carrier receptacle in particular defining lateral guide grooves into which the lateral edges of the associated carrier arm engage.
  • the circuit board holder In this embodiment only the support arms of the circuit board holder need to be pushed into the corresponding support receptacles of the reflector holder until the circuit board holder body comes into contact with the reflector holder body, for which purpose corresponding stop surfaces are provided on the circuit board holder body and the reflector holder body. In this end position, the circuit board holder body is then fixed on the reflector holder body.
  • the LED boards In position the LED boards, according to one embodiment of the invention, they can be moved in the associated receptacles parallel to the direction of extent of the support arms and thus also the direction of insertion Z, and elastic pressure means are provided in the rear end area of the receptacles of the board holder, which elastically remove the LED boards press the recordings.
  • the LED boards can have a centering projection at their front end area, which engages in a corresponding centering recess of the associated carrier receptacle in order to center the LED boards in a Y-direction running transversely to the insertion direction Z, the centering projection and the centering recess each being opposite to one another , have lateral contact surfaces.
  • the LED boards and the reflector holder have contact surfaces in order to position the LED boards on the reflector holder in the insertion direction Z, these Z contact surfaces of the LED boards preferably being formed on opposite sides of the centering projection.
  • the Z contact surfaces of the LED boards come into contact with the corresponding contact surfaces of the reflector holder when the carrier arms are pushed into the carrier receptacles.
  • the elastic pressure means at the rear end area of the receptacles of the board holder are elastically compressed and thus tensioned, so that the LED boards are positioned in the direction of insertion.
  • the centering projections of the LED board come into engagement with the corresponding centering recesses of the reflector holder in order to position the LED boards in the Y direction.
  • each LED board preferably form a contact surface, the corresponding contact surfaces of the reflector holder being raised from the bottom of the carrier receptacles.
  • elastic pressure means or spring elements are provided on the reflector holder or the board holder, which act on the upper sides of the LED boards in order to press the undersides of the LED boards against the corresponding contact surfaces of the reflector holder.
  • elastic pressure means in the form of leaf springs can be provided on the circuit board holder, which extend over the open top of the receptacles extend and are designed to depress an LED board inserted into the receptacle in the direction of the bottom of the receptacle.
  • the leaf springs can be held on the support arms at their rear end region and extend over the receptacles towards the front.
  • the pressure medium provided ensures a flat contact between the LED circuit board and the reflector holder, which also ensures good thermal contact between the components. In this way, good thermal dissipation of the heat generated during operation can take place from the LED circuit board into the reflector holder.
  • a circuit board holder for an LED lamp preferably comprises a circuit board holder body and a support arm protruding in a straight line from the circuit board holder body or a plurality of support arms protruding parallel to one another from the front side of the circuit board holder body, each support arm at its free, front end section having a receptacle open to the front end face of the support arm for a Has LED board, elastic pressure means being provided in the rear area of the receptacle, which are designed to elastically press an LED board inserted into the receptacle out of the receptacle.
  • elastic pressure means are provided on the board holder, which extend over an open top of the existing receptacle or receptacles and are designed to move an LED board inserted into the receptacle in the direction the bottom of the receptacle, with leaf springs being provided in particular as elastic pressure means on the circuit board holder and in particular the support arms, which are held at their rear end region on the circuit board holder and in particular the support arms and extend towards the front over the receptacles.
  • a reflector arrangement for an LED light is created with a light unit or several light units, each light unit having a light source in the form of an LED board with a luminous surface and an optical device assigned to the light source a reflector holder, which carries the optical device of the existing lamp units and is in particular formed in one piece with them, each lamp unit being assigned a carrier receptacle in the reflector holder, into which a carrier arm of a circuit board holder can be inserted straight from the rear of the reflector holder, and in the front End area of each carrier receptacle contact surfaces are formed in order to position one LED board in the carrier receptacle, each carrier receptacle in particular defining lateral guide grooves into which the lateral edges of the associated carrier arm engage fen.
  • the reflector arrangement is characterized in that in the carrier receptacle, in particular in the area of an end face of the carrier receptacle, a centering recess to center an LED board in a Y-direction running transversely to the insertion direction, and at least one contact surface to to position an LED board in the insertion direction and / or that a contact surface is formed in the area of the base of the carrier receptacle, which is raised from the base of the carrier receptacle.
  • an LED light according to an embodiment of the present invention is shown.
  • the LED light comprises two light units, each of which has a light source in the form of an LED circuit board 1 and a reflector 2a of an optical device assigned to the LED circuit board 1.
  • the optical device can have an optical lens 2b.
  • the LED board 1 has, in a manner known per se, a flat substrate 1 a, which is rigid and equipped with the required LEDs and possibly other electronic components.
  • the LEDs form a luminous surface 1b of the LED circuit board 1.
  • the other electronic components and also the electrical connection surfaces of the LED circuit boards 1 are not shown in the drawing.
  • the LED boards 1 are held on a common board holder 3, which also carries the control electronics for the LED boards 1.
  • the circuit board holder 3 has a circuit board holder body 3a, which is here cuboid, and two support arms 3b, which protrude parallel to one another from the front face of the circuit board holder body 3a.
  • the support arms 3b protrude from the front face of the circuit board holder body 3a.
  • the support arms 3b are each assigned to a lamp unit and have a receptacle 4 at their front, free end section into which the LED circuit board 1 of the lamp unit can be inserted.
  • the receptacles 4 are open to the front end of the support arms 3b, so that the LED boards 1 protrude from the receptacles 4 on the open end. Furthermore, the receptacles 4 are open to the top of the support arms 3b, and the bottom of the receptacle 4 is also interrupted by an opening 5 which extends from the rear to the front of the receptacle 4.
  • a compression spring 6 is provided, which is effective to press an LED board 1 inserted into the receptacle 4 out of the receptacle 4 in the longitudinal direction 7 of the support arm 3b.
  • the compression spring 6 is designed here in the form of an elastic bracket which extends transversely to the receptacle 4 and is molded onto the side walls thereof.
  • each receptacle 4 is assigned a compression spring 7 which acts on the top of the LED boards 1 in order to press them downward in the direction of the bottom of the receptacle 4.
  • the compression spring is designed here in the form of a leaf spring 7, the rear end section of which is connected to the rear of the receptacle 4 with the support arm 3b and which extends over the receptacle 4 in the longitudinal direction Z of the support arm 3b.
  • the reflectors 2 are arranged on a common reflector holder 8 and formed in one piece therewith to form a reflector arrangement. Specifically, the reflector holder 8 and the reflectors 2a are produced as one component using the casting process.
  • the reflector holder 8 has two support receptacles 9 into which the support arms 3b of the circuit board holder 3 can be inserted.
  • the carrier receptacles 9 define lateral guide grooves 9a, 9b into which the lateral edges of the carrier arms 3b engage.
  • the carrier receptacles 9 are open on their upper side.
  • the circuit board holder 3 also has only one support arm 2b, which protrudes in a straight line from the front end face of the circuit board holder body 3a.
  • the support arm 3b has a receptacle 4 on its front, free end section, into which the LED circuit board 1 of the lamp unit can be inserted.
  • a compression spring 6 is provided, which is effective to press an LED board 1 inserted into the receptacle 4 in the longitudinal direction 7 of the support arm 3b out of the receptacle 4, so that the LED board 1 on the open face from the receptacle 4 protrudes.
  • a compression spring 7 is assigned to the receptacle 4, which acts on the upper side of the LED circuit board 1 in order to press it downward in the direction of the bottom of the receptacle 4.
  • the compression spring is designed in the form of a leaf spring 7, the rear end section of which is connected to the rear of the receptacle 4 with the support arm 3b and which extends in the longitudinal direction Z of the support arm 3b over the receptacle 4.
  • the reflector 2a is arranged on a reflector holder 8 which has a carrier receptacle 9 into which the carrier arm 3b of the circuit board holder 3 can be inserted.
  • the carrier receptacle 9 defines the side Guide grooves 9a, 9b into which the lateral edges of the support arm 3b engage.
  • the carrier receptacle 9 is open on its upper side.
  • the LED circuit board 1 has a centering projection 10 at its front end area, which engages in a corresponding centering recess 11 of the associated carrier receptacle 9 in order to center the LED circuit board 1 in a Y direction running transversely to the insertion direction Z.
  • the centering projection 10 has corresponding lateral contact surfaces 10a, 10b on its opposite sides, which come into contact with corresponding contact surfaces 11a, 11b of the centering recess 11.
  • the LED circuit board 1 and the reflector holder 8 have contact surfaces in order to position the LED circuit board 1 on the reflector holder 8 in the insertion direction Z.
  • These Z-contact surfaces 12a, 12b; 13a, 13b of the LED board 1 are formed here on the opposite sides in the Y direction of the shoulder of the centering projection 10 of the board body 3a and the shoulder surfaces of the carrier receptacle 9 present on the centering recess 11.
  • the underside of the LED board 1 each forms a contact surface.
  • a corresponding contact surface 14 is formed on the bottom of the carrier receptacle 9 and is raised in relation to the surrounding floor areas, ie the contact surface 14 projects upwards over the bottom of the carrier receptacle 9.
  • the front end section is the contact surface 14 designed as a run-up slope 14a, which cooperates with the associated LED board 1 in order to raise it when the carrier arm 3b is pushed in.
  • the LED circuit board 1 is first pushed into the two receptacles 4 of the support arms 3b of the circuit board holder 3 from their open end face. Then the circuit board holder 3 is connected to the reflector holder 8 by inserting the support arms 3b of the circuit board holder 3 into the associated carrier receptacle 9 of the reflector holder 8 until the circuit board holder body 3a comes into contact with the reflector holder 8. In this end position, the circuit board holder 3 and the reflector holder 8 are releasably connected to one another, namely screwed.
  • the centering projection 10 on the front end region of the substrate 1a of the LED board 1 engages with the associated centering recess 11 of the carrier receptacle 9, whereby the LED board 1 is centered in the Y direction.
  • the Z contact surfaces 12a, 12b in the area of the shoulders of the LED board 1 on the opposite sides of the centering projection 10 engage with the corresponding contact surfaces 13a, 13b of the reflector holder 8 in order to position the LED board 1 in the insertion direction Z. .
  • the LED circuit board 1 is furthermore due to the interaction with the run-up bevel 14b on the bottom of the carrier receptacle 9 against the restoring force of the leaf spring 7, which engages over the receptacle 4, slightly raised, so that the LED board 1 is pressed by the leaf spring 7 against the contact surface 14 on the bottom of the carrier receptacle 9 to the LED board 1 in the X direction to position.
  • a reflector holder 8 which carries an optical device 2 which comprises a reflector 2a and a lens 2b positioned thereon.
  • the carrier receptacle 9 is designed here as in the two previously described embodiments.
  • the lateral edges of the carrier receptacle 9 are here dovetail-like in order to guide the correspondingly designed edges of an LED board and to fix them on the reflector holder against loosening upwards.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

Die vorliegende Erfindung betrifft eine LED-Leuchte, insbesondere LED-Fahrzeugscheinwerfer, mit einer Leuchteneinheit oder mehreren Leuchteneinheiten, wobei jede Leuchteneinheit ein Leuchtmittel in der Form einer LED-Platine mit einer leuchtenden Fläche und eine dem Leuchtmittel zugeordnete optische Einrichtung mit wenigstens einem Reflektor und/oder wenigstens einer Linse aufweist.The present invention relates to an LED light, in particular LED vehicle headlights, with a light unit or several light units, each light unit having a light source in the form of an LED board with a luminous surface and an optical device assigned to the light source with at least one reflector and / or at least one lens.

LED-Leuchten ersetzen in zunehmendem Maße andere Leuchten, weil sie langlebiger sind und eine vergleichsweise geringe Wärmestrahlung aussenden. Auch im Bereich der Kraftfahrzeugbeleuchtung kommen inzwischen Hauptscheinwerfer zum Einsatz, die das Abblendlicht in LED-Technik realisieren oder sogar als Voll-LED-Scheinwerfer ausgestaltet sind und damit herkömmliche Xenon-Scheinwerfer ablösen.LED lights are increasingly replacing other lights because they are more durable and emit comparatively little heat radiation. Main headlights are now also being used in the field of motor vehicle lighting, which implement the low beam using LED technology or are even designed as full LED headlights and thus replace conventional xenon headlights.

Die Realisierung des Abblendlichts in LED-Technik erfordert üblicherweise, dass vier Leuchteneinheiten mit LEDs und diesen zugeordneten optischen Einrichtungen in der Form von Reflektoren und/oder Linsen vorgesehen sind, wobei jeweils zwei Leuchteneinheiten bestehend aus LEDs und zugeordneter optischer Einrichtung für die Beleuchtung des Vorfeldes und zwei Leuchteneinheiten für die Reichweite zuständig sind.The implementation of the low beam in LED technology usually requires that four lighting units with LEDs and these associated optical devices in the form of reflectors and / or lenses are provided, with two lighting units each consisting of LEDs and associated optical device for illuminating the apron and two lighting units are responsible for the range.

Als LED-Leuchtmittel kommen dabei LED-Platinen zum Einsatz, die ein flächiges Substrat besitzen, welches mit den erforderlichen LEDs und ggf. weiteren elektronischen Bauelementen bestückt sind. Zusätzlich sind Anschlussflächen vorhanden, über welche die LED-Platinen an Leitungen angeschlossen werden können. In der Regel handelt es sich bei den Anschlussflächen um verzinnte Kupferflächen, die dem Lötanschluss von Leitungen dienen. Die LEDs bilden dann eine leuchtende Fläche der LED-Platinen.In this case, LED boards are used as the LED lighting means, which have a flat substrate which is equipped with the required LEDs and possibly other electronic components. In addition, there are connection surfaces via which the LED boards can be connected to lines. As a rule, the connection surfaces are tinned copper surfaces that are used for soldering lines. The LEDs then form a luminous surface on the LED boards.

Die LEDs müssen beim Einsatz in Hauptscheinwerfern von Fahrzeugen hochpräzise gegenüber den Reflektoren positioniert sein, was hohe Anforderungen an die Herstellung stellt. Aus diesem Grund werden LED-Hauptscheinwerfer von Fahrzeugen komplett bei der Herstellung justiert. Dies bringt den Nachteil mit sich, dass die Leuchtmittel nicht ausgewechselt werden können. Entsprechend ist bei einem defekten Leuchtmittel häufig der Ersatz des kompletten Scheinwerfers erforderlich.When used in the main headlights of vehicles, the LEDs must be positioned with great precision opposite the reflectors, which places high demands on production. For this reason, LED main headlights of vehicles are completely adjusted during manufacture. This has the disadvantage that the lamps cannot be replaced. Correspondingly, it is often necessary to replace the entire headlamp if the lamp is defective.

Aus der JP 2009-295369 A ist eine Fahrzeugleuchte mit einer Leuchteinheit bekannt, die eine LED-Platine mit einer leuchtenden Fläche und eine zugeordnete optische Einrichtung mit einem Reflektor umfasst. Es sind elastische Druckmittel vorgesehen, welche die LED-Platine beaufschlagen, um diese in Richtung des Reflektors zu drücken und so eine Positionierung der LED-Platine in einer Richtung zu bewirken.From the JP 2009-295369 A a vehicle lamp with a lighting unit is known which comprises an LED board with a luminous surface and an associated optical device with a reflector. Elastic pressure means are provided which act on the LED circuit board in order to press it in the direction of the reflector and thus cause the LED circuit board to be positioned in one direction.

Die US 2007/109806 A1 offenbart eine weitere Fahrzeugleuchte mit einer Leuchteinheit, die eine LED-Platine mit einer leuchtenden Fläche und eine zugeordnete optische Einrichtung mit einem Reflektor und einer Linse umfasst. Der Platinenhalter definiert eine Aufnahme, in welcher die LED-Platine positioniert ist. Ferner sind an dem Platinenhalter elastische Druckmittel vorgesehen, welche die LED-Platine beaufschlagen, um die LED-Platine in dem Platinenhalter zu fixieren.The US 2007/109806 A1 discloses a further vehicle lamp with a lighting unit which comprises an LED circuit board with a luminous surface and an associated optical device with a reflector and a lens. The circuit board holder defines a receptacle in which the LED circuit board is positioned. Furthermore, elastic pressure means are provided on the circuit board holder, which pressurize the LED circuit board in order to fix the LED circuit board in the circuit board holder.

Aus der DE 103 51 462 A1 ist schließlich eine Leuchteneinheit mit einer Reflektoranordnung und einer in die Reflektoranordnung einschiebbaren LED-Leuchte bekannt. Eine Reflektoranordnung für eine LED-Leuchte ist aus der EP2317213 A2 bekannt.From the DE 103 51 462 A1 Finally, a lamp unit with a reflector arrangement and an LED lamp which can be pushed into the reflector arrangement is known. A reflector arrangement for an LED lamp is from the EP2317213 A2 known.

Aufgabe der vorliegenden Erfindung ist es daher, eine LED-Leuchte, insbesondere einen LED-Fahrzeugscheinwerfer der eingangs genannten Art so auszugestalten, dass die Positionierung der LED-Platinen und damit der leuchtenden Flächen gegenüber den zugeordneten Reflektoren vereinfacht und damit die Montage erleichtert wird. Insbesondere soll auch die Möglichkeit geschaffen werden, die Leuchtmittel auszutauschen.The object of the present invention is therefore to design an LED light, in particular an LED vehicle headlight of the type mentioned at the outset, in such a way that the positioning of the LED boards and thus the luminous surfaces compared to the assigned reflectors simplified and thus the assembly is facilitated. In particular, it should also be possible to exchange the lighting means.

Diese Aufgabe ist bei einer LED-Leuchte der eingangs genannten Art dadurch gelöst, dass ein Reflektorhalter vorgesehen ist, der die optischen Einrichtungen der vorhandenen Leuchteneinheit oder Leuchteneinheiten trägt und insbesondere einteilig damit ausgebildet ist, dass ein Platinenhalter vorgesehen ist, der an dem Reflektorhalter lösbar befestigt ist, dass der Platinenhalter für jede Leuchteneinheit eine Aufnahme aufweist, in welcher die LED-Platine der Leuchteneinheit positioniert ist, wobei die LED-Platine Anlageflächen aufweist, die mit korrespondierenden Anlageflächen an dem Reflektorhalter in Anlage kommen, um die LED-Platine in der Aufnahme gegenüber der zugeordneten optischen Einrichtung in allen Richtungen zu positionieren, wenn
der Platinenhalter an dem Reflektorhalter fixiert ist, und dass jeder Leuchteneinheit elastische Druckmittel zugeordnet sind, die an dem Platinenhalter und/oder dem Reflektorhalter vorgesehen sind und die LED-Platine der Leuchteneinheit beaufschlagen, um deren Anlageflächen gegen die Anlageflächen des Reflektorhalters zu drücken, wenn der Platinenhalter an dem Reflektorhalter fixiert ist.This object is achieved in an LED lamp of the type mentioned at the outset in that a reflector holder is provided which carries the optical devices of the existing lamp unit or lamp units and, in particular, is designed in one piece with a circuit board holder which is detachably fastened to the reflector holder is that the circuit board holder has a receptacle for each lamp unit in which the LED circuit board of the lamp unit is positioned, the LED circuit board having contact surfaces that come into contact with corresponding contact surfaces on the reflector holder to the LED circuit board in the receptacle to be positioned with respect to the associated optical device in all directions, if
the circuit board holder is fixed to the reflector holder, and that elastic pressure means are assigned to each lamp unit, which are provided on the circuit board holder and / or the reflector holder and act on the LED board of the lamp unit in order to press its contact surfaces against the contact surfaces of the reflector holder when the Board holder is fixed to the reflector holder.

Die erfindungsgemäße LED-Leuchte umfasst damit zwei bauliche Hauptkomponenten, nämlich zum einen den Reflektorhalter, welcher die optischen Einrichtungen trägt, und zum anderen den Platinenhalter, der mit dem Reflektorhalter lösbar verbunden ist. Die LED-Platinen sind dabei in die Aufnahmen des Platinenhalters eingelegt und werden in diesen vorpositioniert. Die endgültige Positionierung des Platinenhalters erfolgt erst, wenn der Platinenhalter an dem Reflektorhalter montiert wird. Hierzu weisen die LED-Platinen und der Reflektorhalter zueinander korrespondierende Anlageflächen auf, die im montierten Zustand miteinander in Anlage kommen und dafür sorgen, dass die LED-Platinen in allen Richtungen gegenüber dem Reflektorhalter und damit gegenüber den ihnen zugeordneten Reflektoren positioniert werden. Dabei wird durch elastische Druckmittel sichergestellt, dass die Anlageflächen der LED-Platinen gegen die korrespondierende Anlageflächen des Reflektorhalters gedrückt werden. Im Ergebnis ist es zur Montage der erfindungsgemäßen LED-Leuchte lediglich erforderlich, den Platinenhalter mit in die Aufnahmen eingelegten LED-Platinen an dem Reflektorhalter zu befestigen, beispielsweise anzuschrauben. Die LED-Platinen werden dann automatisch durch die elastischen Druckmittel gegen die Anlageflächen des Reflektorhalters gedrückt und so positioniert. Eine aufwändige Justierung ist damit nicht erforderlich. Ebenfalls ist es möglich, die Leuchtmittel auszutauschen. Hierzu braucht lediglich der Platinenhalter von dem Reflektorhalter gelöst zu werden. Dann können entweder einzelne LED-Platinen ausgewechselt werden. Alternativ kann auch der ganze Platinenhalter mit den LED-Platinen ausgetauscht werden. Für diesen Fall ist zweckmäßigerweise die Steuerungselektronik für die LED-Platinen an dem Platinenhalter vorgesehen.The LED luminaire according to the invention thus comprises two main structural components, namely on the one hand the reflector holder, which carries the optical devices, and on the other hand the circuit board holder, which is detachably connected to the reflector holder. The LED boards are inserted into the mounts of the board holder and are pre-positioned in them. The final positioning of the circuit board holder only takes place when the circuit board holder is mounted on the reflector holder. For this purpose, the LED boards and the reflector holder have contact surfaces that correspond to one another which come into contact with one another in the assembled state and ensure that the LED boards are positioned in all directions with respect to the reflector holder and thus with respect to the reflectors assigned to them. Elastic pressure means ensure that the contact surfaces of the LED boards are pressed against the corresponding contact surfaces of the reflector holder. As a result, to assemble the LED lamp according to the invention it is only necessary to fasten the circuit board holder with the LED circuit boards inserted in the receptacles to the reflector holder, for example to screw it on. The LED boards are then automatically pressed against the contact surfaces of the reflector holder by the elastic pressure means and positioned in this way. A complex adjustment is therefore not necessary. It is also possible to exchange the lamps. For this purpose, the circuit board holder only needs to be detached from the reflector holder. Then either individual LED boards can be exchanged. Alternatively, the entire circuit board holder can be exchanged with the LED circuit boards. In this case, the control electronics for the LED boards are expediently provided on the board holder.

Der Reflektorhalter und die Reflektoren sind bevorzugt einteilig ausgebildet, so dass sie beispielsweise als Gussteil hergestellt werden können. Auf diese Weise können Fertigungstoleranzen minimiert werden. Gleichzeitig wird die Wärmeableitung aus den LED-Platinen begünstigt. Da über den Platinenhalter lediglich eine Vorpositionierung der LED-Platinen an dem Reflektorhalter vorgenommen wird, sind die Anforderungen an die Fertigungstoleranzen bei dem Platinenhalter nicht hoch, so dass dieser günstig hergestellt werden kann.The reflector holder and the reflectors are preferably designed in one piece, so that they can be produced as a cast part, for example. In this way, manufacturing tolerances can be minimized. At the same time, the heat dissipation from the LED boards is promoted. Since the LED circuit boards are only prepositioned on the reflector holder via the circuit board holder, the demands on the manufacturing tolerances for the circuit board holder are not high, so that it can be manufactured inexpensively.

Gemäß einer Ausführungsform der Erfindung ist vorgesehen, dass jede Aufnahme für eine LED-Platine zu einer vorderen Stirnseite des Platinenhalters offen ist und die zugeordnete LED-Platine an der offenen Stirnseite aus der Aufnahme ragt, wobei an dem aus der Aufnahme ragenden Endabschnitt der LED-Platine die Anlageflächen der LED-Platinen zur Positionierung der LED-Platinen gegenüber der jeweils zugehörigen optischen Einrichtung ausgebildet sind.According to one embodiment of the invention it is provided that each receptacle for an LED circuit board is to a front end face of the circuit board holder is open and the associated LED board protrudes from the receptacle at the open end, the contact surfaces of the LED boards for positioning the LED boards in relation to the respective associated optical device being formed on the end section of the LED board protruding from the receptacle.

In bevorzugter Weise weist der Platinenhalter einen Platinenhalterkörper auf und ist jeder Leuchteneinheit ein Trägerarm zugeordnet, welcher von der Vorderseite des Platinenhalterkörpers gradlinig abragt, wobei an dem freien, vorderen Endabschnitt des Trägerarms die Aufnahme für die LED-Platine der Leuchteneinheit ausgebildet ist. Dem Trägerarm jeder Leuchteneinheit ist eine korrespondierende Trägeraufnahme in dem Reflektorhalter zugeordnet, in welche der Trägerarm von der Rückseite des Reflektorhalters her geradlinig eingeschoben ist bzw. eingeschoben werden kann, wobei die Trägeraufnahme insbesondere seitliche Führungsnuten definiert, in welche die seitlichen Ränder des zugeordneten Trägerarms eingreifen. Zur Montage des Platinenhalters brauchen bei dieser Ausgestaltung lediglich die Trägerarme des Platinenhalters in die entsprechenden Trägeraufnahmen des Reflektorhalters eingeschoben zu werden, bis der Platinenhalterkörper an dem Reflektorhalterkörper in Anlage kommt, wozu an dem Platinenhalterkörper und dem Reflektorhalterkörper entsprechende Anschlagflächen vorgesehen sind. In dieser Endposition wird dann der Platinenhalterkörper an dem Reflektorhalterkörper fixiert. Zur Positionierung der LED-Platinen sind diese gemäß einer Ausführungsform der Erfindung in den zugehörigen Aufnahmen parallel zu der Erstreckungsrichtung der Trägerarme und damit auch der Einschubrichtung Z bewegbar und sind im hinteren Endbereich der Aufnahmen des Platinenhalters elastische Druckmittel vorgesehen, welche die LED-Platinen elastisch aus den Aufnahmen drücken.The circuit board holder preferably has a circuit board holder body and each lamp unit is assigned a support arm which protrudes in a straight line from the front of the circuit board holder body, the receptacle for the LED circuit board of the lamp unit being formed on the free, front end portion of the support arm. The carrier arm of each lamp unit is assigned a corresponding carrier receptacle in the reflector holder, into which the carrier arm is or can be inserted in a straight line from the rear of the reflector holder, the carrier receptacle in particular defining lateral guide grooves into which the lateral edges of the associated carrier arm engage. To mount the circuit board holder in this embodiment only the support arms of the circuit board holder need to be pushed into the corresponding support receptacles of the reflector holder until the circuit board holder body comes into contact with the reflector holder body, for which purpose corresponding stop surfaces are provided on the circuit board holder body and the reflector holder body. In this end position, the circuit board holder body is then fixed on the reflector holder body. To position the LED boards, according to one embodiment of the invention, they can be moved in the associated receptacles parallel to the direction of extent of the support arms and thus also the direction of insertion Z, and elastic pressure means are provided in the rear end area of the receptacles of the board holder, which elastically remove the LED boards press the recordings.

Die LED-Platinen können an ihrem vorderen Endbereich einen Zentriervorsprung aufweisen, der in eine korrespondierende Zentrierausnehmung der zugehörigen Trägeraufnahme eingreift, um die LED-Platinen in einer quer zur Einschubrichtung Z verlaufenden Y-Richtung zu zentrieren, wobei der Zentriervorsprung und die Zentrierausnehmung jeweils einander gegenüberliegende, seitliche Anlageflächen aufweisen. Ferner weisen die LED-Platinen und der Reflektorhalter Anlageflächen auf, um die LED-Platinen an dem Reflektorhalter in der Einschubrichtung Z zu positionieren, wobei vorzugsweise diese Z-Anlageflächen der LED-Platinen auf gegenüberliegenden Seiten des Zentriervorsprungs ausgebildet sind. Bei dieser Ausgestaltung kommen die Z-Anlageflächen der LED-Platinen beim Einschieben der Trägerarme in die Trägeraufnahmen mit den entsprechenden Anlageflächen des Reflektorhalters in Kontakt. Beim weiteren Einschieben der Trägerarme werden die elastischen Druckmittel am hinteren Endbereich der Aufnahmen des Platinenhalters elastisch zusammengedrückt und damit gespannt, so dass die LED-Platinen in der Einschubrichtung positioniert werden. Gleichzeitig kommen die Zentriervorsprünge der LED-Platine mit den korrespondierenden Zentrierausnehmungen des Reflektorhalters in Eingriff, um die LED-Platinen in der Y-Richtung zu positionieren.The LED boards can have a centering projection at their front end area, which engages in a corresponding centering recess of the associated carrier receptacle in order to center the LED boards in a Y-direction running transversely to the insertion direction Z, the centering projection and the centering recess each being opposite to one another , have lateral contact surfaces. Furthermore, the LED boards and the reflector holder have contact surfaces in order to position the LED boards on the reflector holder in the insertion direction Z, these Z contact surfaces of the LED boards preferably being formed on opposite sides of the centering projection. In this embodiment, the Z contact surfaces of the LED boards come into contact with the corresponding contact surfaces of the reflector holder when the carrier arms are pushed into the carrier receptacles. When the carrier arms are pushed in further, the elastic pressure means at the rear end area of the receptacles of the board holder are elastically compressed and thus tensioned, so that the LED boards are positioned in the direction of insertion. At the same time, the centering projections of the LED board come into engagement with the corresponding centering recesses of the reflector holder in order to position the LED boards in the Y direction.

Zur Positionierung der LED-Platinen in einer X-Richtung, die quer zur Einschubrichtung Z bzw. der YZ-Ebene verläuft, bilden bevorzugt die Unterseiten jeder LED-Platine eine Anlagefläche, wobei die korrespondierenden Anlageflächen des Reflektorhalters von dem Boden der Trägeraufnahmen erhaben sind. Zusätzlich sind elastische Druckmittel bzw. Federelemente an dem Reflektorhalter oder dem Platinenhalter vorgesehen, die auf die Oberseiten der LED-Platinen wirken, um die Unterseiten der LED-Platinen gegen die korrespondierenden Anlageflächen des Reflektorhalters zu drücken. Hierzu können beispielsweise elastische Druckmittel in Form von Blattfedern an dem Platinenhalter vorgesehen sein, die sich über die offene Oberseite der Aufnahmen erstrecken und ausgebildet sind, um eine in die Aufnahme eingesetzte LED-Platine in Richtung des Bodens der Aufnahme niederzudrücken. Insbesondere können die Blattfedern an ihrem rückseitigen Endbereich an den Trägerarmen gehalten sein und sich zur Vorderseite hin über die Aufnahmen erstrecken. Durch die vorgesehenen Druckmittel wird ein flächiger Kontakt zwischen der LED-Platine und dem Reflektorhalter gewährleistet, durch den auch ein guter thermischer Kontakt zwischen den Bauteilen sichergestellt wird. Auf diese Weise kann eine gute thermische Ableitung der im Betrieb entstehenden Wärme aus der LED-Platine in den Reflektorhalter stattfinden.To position the LED boards in an X direction that runs transversely to the insertion direction Z or the YZ plane, the undersides of each LED board preferably form a contact surface, the corresponding contact surfaces of the reflector holder being raised from the bottom of the carrier receptacles. In addition, elastic pressure means or spring elements are provided on the reflector holder or the board holder, which act on the upper sides of the LED boards in order to press the undersides of the LED boards against the corresponding contact surfaces of the reflector holder. For this purpose, for example, elastic pressure means in the form of leaf springs can be provided on the circuit board holder, which extend over the open top of the receptacles extend and are designed to depress an LED board inserted into the receptacle in the direction of the bottom of the receptacle. In particular, the leaf springs can be held on the support arms at their rear end region and extend over the receptacles towards the front. The pressure medium provided ensures a flat contact between the LED circuit board and the reflector holder, which also ensures good thermal contact between the components. In this way, good thermal dissipation of the heat generated during operation can take place from the LED circuit board into the reflector holder.

Der erhabenen Anlagefläche des Reflektorhalters kann dabei eine Auflaufschräge zugeordnet sein, welche mit der LED-Platine in der Weise zusammenwirkt, dass diese beim Einschieben der Trägerarme entgegen der Rückstellkraft der die LED-Platine niederdrückenden Federelemente angehoben wird.
Ein Platinenhalter für eine LED-Leuchte umfasst vorzugsweise einen Platinenhalterkörper und einen geradlinig von dem Platinenhalterkörper abragenden Trägerarm oder mehrere parallel zueinander von der Vorderseite des Platinenhalterkörpers abragende Trägerarme, wobei jeder Trägerarm an seinem freien, vorderen Endabschnitt eine zur vorderen Stirnseite des Trägerarms offene Aufnahme für eine LED-Platine aufweist, wobei im hinteren Bereich der Aufnahme elastische Druckmittel vorgesehen sind, die ausgebildet sind, eine in die Aufnahme eingesetzte LED-Platine elastisch aus der Aufnahme zu drücken.The raised contact surface of the reflector holder can be assigned a run-up bevel which interacts with the LED board in such a way that it is raised when the support arms are pushed in against the restoring force of the spring elements pressing down the LED board.
A circuit board holder for an LED lamp preferably comprises a circuit board holder body and a support arm protruding in a straight line from the circuit board holder body or a plurality of support arms protruding parallel to one another from the front side of the circuit board holder body, each support arm at its free, front end section having a receptacle open to the front end face of the support arm for a Has LED board, elastic pressure means being provided in the rear area of the receptacle, which are designed to elastically press an LED board inserted into the receptacle out of the receptacle.

Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass an dem Platinenhalter elastische Druckmittel vorgesehen sind, die sich über eine offene Oberseite der vorhandenen Aufnahme oder Aufnahmen erstrecken und ausgebildet sind, um eine in die Aufnahme eingesetzte LED-Platine in Richtung des Bodens der Aufnahme niederzudrücken, wobei insbesondere als elastische Druckmittel Blattfedern an dem Platinenhalter und insbesondere den Trägerarmen vorgesehen sind, die an ihrem rückseitigen Endbereich an dem Platinenhalter und insbesondere den Trägerarmen gehalten sind und sich zur Vorderseite hin über die Aufnahmen erstrecken.According to a preferred embodiment it is provided that elastic pressure means are provided on the board holder, which extend over an open top of the existing receptacle or receptacles and are designed to move an LED board inserted into the receptacle in the direction the bottom of the receptacle, with leaf springs being provided in particular as elastic pressure means on the circuit board holder and in particular the support arms, which are held at their rear end region on the circuit board holder and in particular the support arms and extend towards the front over the receptacles.

Ferner wird eine Reflektoranordnung für eine LED-Leuchte, insbesondere einen LED-Fahrzeugscheinwerfer, mit einer Leuchteneinheit oder mehreren Leuchteneinheiten geschaffen, wobei jede Leuchteneinheit ein Leuchtmittel in der Form einer LED-Platine mit einer leuchtenden Fläche und eine dem Leuchtmittel zugeordnete optische Einrichtung aufweist, mit einem Reflektorhalter, der die optische Einrichtung der vorhandenen Leuchteneinheiten trägt und insbesondere einteilig mit diesen ausgebildet ist, wobei jeder Leuchteneinheit eine Trägeraufnahme in dem Reflektorhalter zugeordnet ist, in welche ein Trägerarm eines Platinenhalters von der Rückseite des Reflektorhalters geradlinig eingeschoben werden kann, und wobei im vorderen Endbereich jeder Trägeraufnahme Anlageflächen ausgebildet sind, um jeweils eine LED-Platine in der Trägeraufnahme zu positionieren, wobei jede Trägeraufnahme insbesondere seitliche Führungsnuten definiert, in welche die seitlichen Ränder des zugeordneten Trägerarms eingreifen.Furthermore, a reflector arrangement for an LED light, in particular an LED vehicle headlight, is created with a light unit or several light units, each light unit having a light source in the form of an LED board with a luminous surface and an optical device assigned to the light source a reflector holder, which carries the optical device of the existing lamp units and is in particular formed in one piece with them, each lamp unit being assigned a carrier receptacle in the reflector holder, into which a carrier arm of a circuit board holder can be inserted straight from the rear of the reflector holder, and in the front End area of each carrier receptacle contact surfaces are formed in order to position one LED board in the carrier receptacle, each carrier receptacle in particular defining lateral guide grooves into which the lateral edges of the associated carrier arm engage fen.

Die Reflektoranordnung zeichnet sich gemäß einer Ausführungsform dadurch aus, dass in der Trägeraufnahme, insbesondere im Bereich einer stirnseitigen Endfläche der Trägeraufnahme, eine Zentrierausnehmung, um eine LED-Platine in einer quer zur Einschubrichtung verlaufenden Y-Richtung zu zentrieren, und wenigstens eine Anlagefläche, um eine LED-Platine in der Einschubrichtung zu positionieren, ausgebildet sind und/oder dass im Bereich des Bodens der Trägeraufnahme eine Anlagefläche ausgebildet ist, die von dem Boden der Trägeraufnahme erhaben ist.According to one embodiment, the reflector arrangement is characterized in that in the carrier receptacle, in particular in the area of an end face of the carrier receptacle, a centering recess to center an LED board in a Y-direction running transversely to the insertion direction, and at least one contact surface to to position an LED board in the insertion direction and / or that a contact surface is formed in the area of the base of the carrier receptacle, which is raised from the base of the carrier receptacle.

In der Zeichnung ist ein Ausführungsbeispiel einer erfindungsgemäßen LED-Leuchte dargestellt. In der Zeichnung zeigt:

Figur 1
eine LED-Leuchte gemäß der vorliegenden Erfindung in perspektivischer Darstellung,
Figur 2
einen Platinenhalter und eine LED-Platine der LED-Leuchte aus Figur 1,
Figur 3
den Platinenhalter aus Figur 2 mit daran vorpositionierten LED-Platinen,
Figur 4
den Platinenhalter aus Figur 3 mit einem Reflektorhalter und daran vorgesehene Reflektoren,
Figur 5
in Schnittdarstellung den Eingriffsbereich zwischen einer LED-Platine und dem Reflektorhalter,
Figur 6
eine weitere LED-Leuchte gemäß der vorliegenden Erfindung in perspektivischer Darstellung,
Figur 7
ein Platinenhalter und eine LED-Platine der LED-Leuchte aus Figur 6,
Figur 8
den Platinenhalter aus Figur 7 mit einer daran vorpositionierten LED-Platine,
Figur 9
den Platinenhalter aus Figur 8 mit einem Reflektorhalter und einem daran gehaltenen Reflektor und
Figur 10
eine weitere Ausführungsform eines Reflektorhalters mit einer daran gehaltenen optischen Einrichtung, die einen Reflektor und eine Linse umfasst.
In the drawing, an embodiment of an LED lamp according to the invention is shown. In the drawing shows:
Figure 1
an LED light according to the present invention in a perspective view,
Figure 2
a circuit board holder and an LED circuit board of the LED light Figure 1 ,
Figure 3
the circuit board holder Figure 2 with pre-positioned LED boards,
Figure 4
the circuit board holder Figure 3 with a reflector holder and reflectors provided on it,
Figure 5
a sectional view of the area of engagement between an LED board and the reflector holder,
Figure 6
a further LED light according to the present invention in a perspective view,
Figure 7
a circuit board holder and an LED circuit board of the LED light Figure 6 ,
Figure 8
the circuit board holder Figure 7 with a pre-positioned LED board,
Figure 9
the circuit board holder Figure 8 with a reflector holder and a reflector held on it and
Figure 10
a further embodiment of a reflector holder with an optical device held thereon which comprises a reflector and a lens.

In der Zeichnung ist eine LED-Leuchte gemäß einer Ausführungsform der vorliegenden Erfindung dargestellt. Die LED-Leuchte umfasst zwei Leuchteneinheiten, die jeweils ein Leuchtmittel in der Form einer LED-Platine 1 und einen der LED-Platine 1 zugeordneten Reflektor 2a einer optischen Einrichtung aufweisen. Die optische Einrichtung kann alternativ oder zusätzlich zu dem Reflektor 2a eine optische Linse 2b aufweisen. Die LED-Platine 1 besitzt in an sich bekannter Weise ein flächiges Substrat 1a, welches starr ausgebildet und mit den erforderlichen LEDs und ggf. weiteren elektronischen Bauelementen bestückt ist. Die LEDs bilden eine leuchtende Fläche 1b der LED-Platine 1. Die weiteren elektronischen Bauelemente und auch die elektrischen Anschlussflächen der LED-Platinen 1 sind in der Zeichnung nicht dargestellt.In the drawing, an LED light according to an embodiment of the present invention is shown. The LED light comprises two light units, each of which has a light source in the form of an LED circuit board 1 and a reflector 2a of an optical device assigned to the LED circuit board 1. As an alternative or in addition to the reflector 2a, the optical device can have an optical lens 2b. The LED board 1 has, in a manner known per se, a flat substrate 1 a, which is rigid and equipped with the required LEDs and possibly other electronic components. The LEDs form a luminous surface 1b of the LED circuit board 1. The other electronic components and also the electrical connection surfaces of the LED circuit boards 1 are not shown in the drawing.

Die LED-Platinen 1 sind an einem gemeinsamen Platinenhalter 3 gehalten, der auch die Steuerungselektronik für die LED-Platinen 1 trägt. Wie insbesondere die Figur 2 gut erkennen lässt, besitzt der Platinenhalter 3 einen Platinenhalterkörper 3a, der hier quaderförmig ausgebildet ist, und zwei Trägerarme 3b, welche von der vorderen Stirnseite des Platinenhalterkörpers 3a parallel zueinander abragen. In dem dargestellten Ausführungsbeispiel ragen die Trägerarme 3b von der vorderen Stirnfläche des Platinenhalterkörpers 3a ab. Die Trägerarme 3b sind jeweils einer Leuchteneinheit zugeordnet und weisen an ihrem vorderen, freien Endabschnitt eine Aufnahme 4 auf, in welche die LED-Platine 1 der Leuchteneinheit eingeschoben werden kann. Die Aufnahmen 4 sind zur vorderen Stirnseite der Trägerarme 3b offen, so dass die LED-Platinen 1 an der offenen Stirnseite aus den Aufnahmen 4 ragen. Ferner sind die Aufnahmen 4 zur Oberseite der Trägerarme 3b offen, und auch der Boden der Aufnahme 4 ist durch eine Öffnung 5, die sich von der Rückseite bis hin zur Vorderseite der Aufnahme 4 erstreckt, unterbrochen.The LED boards 1 are held on a common board holder 3, which also carries the control electronics for the LED boards 1. Like in particular the Figure 2 As can be clearly seen, the circuit board holder 3 has a circuit board holder body 3a, which is here cuboid, and two support arms 3b, which protrude parallel to one another from the front face of the circuit board holder body 3a. In the illustrated embodiment, the support arms 3b protrude from the front face of the circuit board holder body 3a. The support arms 3b are each assigned to a lamp unit and have a receptacle 4 at their front, free end section into which the LED circuit board 1 of the lamp unit can be inserted. The receptacles 4 are open to the front end of the support arms 3b, so that the LED boards 1 protrude from the receptacles 4 on the open end. Furthermore, the receptacles 4 are open to the top of the support arms 3b, and the bottom of the receptacle 4 is also interrupted by an opening 5 which extends from the rear to the front of the receptacle 4.

Am hinteren Endbereich der Aufnahmen 4 ist jeweils eine Druckfeder 6 vorgesehen, die wirksam ist, um eine in die Aufnahme 4 eingesetzte LED-Platine 1 in der Längsrichtung 7 des Trägerarmes 3b aus der Aufnahme 4 zu drücken. Die Druckfeder 6 ist hier in der Form eines elastischen Bügels ausgebildet, der sich quer zu der Aufnahme 4 erstreckt und an deren seitlichen Wandungen angeformt ist.At the rear end area of the receptacles 4, a compression spring 6 is provided, which is effective to press an LED board 1 inserted into the receptacle 4 out of the receptacle 4 in the longitudinal direction 7 of the support arm 3b. The compression spring 6 is designed here in the form of an elastic bracket which extends transversely to the receptacle 4 and is molded onto the side walls thereof.

Ferner ist jeder Aufnahme 4 eine Druckfeder 7 zugeordnet, die auf die Oberseite der LED-Platinen 1 wirkt, um diese nach unten in Richtung des Bodens der Aufnahme 4 zu drücken. Die Druckfeder ist hier in der Form einer Blattfeder 7 ausgebildet, deren hinterer Endabschnitt an der Rückseite der Aufnahme 4 mit dem Trägerarm 3b verbunden ist und die sich in der Längsrichtung Z des Trägerarms 3b über die Aufnahme 4 erstreckt.Furthermore, each receptacle 4 is assigned a compression spring 7 which acts on the top of the LED boards 1 in order to press them downward in the direction of the bottom of the receptacle 4. The compression spring is designed here in the form of a leaf spring 7, the rear end section of which is connected to the rear of the receptacle 4 with the support arm 3b and which extends over the receptacle 4 in the longitudinal direction Z of the support arm 3b.

Die Reflektoren 2 sind an einem gemeinsamen Reflektorhalter 8 angeordnet und unter Bildung einer Reflektoranordnung einstückig mit diesem ausgebildet. Konkret sind der Reflektorhalter 8 und die Reflektoren 2a als ein Bauteil im Gussverfahren hergestellt. Der Reflektorhalter 8 besitzt zwei Trägeraufnahmen 9, in welche die Trägerarme 3b des Platinenhalters 3 eingeschoben werden können. Die Trägeraufnahmen 9 definieren dabei seitliche Führungsnuten 9a, 9b, in welche die seitlichen Ränder der Trägerarme 3b eingreifen. Im Übrigen sind die Trägeraufnahmen 9 zu ihrer Oberseite hin offen.The reflectors 2 are arranged on a common reflector holder 8 and formed in one piece therewith to form a reflector arrangement. Specifically, the reflector holder 8 and the reflectors 2a are produced as one component using the casting process. The reflector holder 8 has two support receptacles 9 into which the support arms 3b of the circuit board holder 3 can be inserted. The carrier receptacles 9 define lateral guide grooves 9a, 9b into which the lateral edges of the carrier arms 3b engage. In addition, the carrier receptacles 9 are open on their upper side.

Am vorderen Endabschnitt der LED-Platinen 1 einerseits und an dem vorderen Endbereich der Trägeraufnahmen 9 andererseits sind einander zugeordnete Anlageflächen ausgebildet, um die LED-Platinen 1 in dem Reflektorhalter und damit gegenüber dem jeweils zugeordneten Reflektor 2 zu positionieren, wenn die Trägerarme 3b vollständig in die Trägeraufnahmen 9 eingeschoben sind. Dies ist dann der Fall, wenn die vordere Stirnfläche des Platinenhalterkörpers 3a an der hinteren Stirnfläche 8a des Reflektorhalters 8 in Anlage kommt.On the front end section of the LED boards 1 on the one hand and on the front end region of the carrier receptacles 9 on the other hand, mutually assigned contact surfaces are formed in order to position the LED boards 1 in the reflector holder and thus with respect to the respectively assigned reflector 2, when the carrier arms 3b are completely pushed into the carrier receptacles 9. This is the case when the front end face of the circuit board holder body 3 a comes into contact with the rear end face 8 a of the reflector holder 8.

In den Figuren 6 bis 9 ist eine weitere Ausführungsform einer LED-Leuchte gemäß der vorliegenden Erfindung dargestellt. Diese entspricht der zuvor erläuterten Ausführungsform mit der Maßgabe, dass die LED-Leuchte nur eine einzige Leuchteneinheit mit einem Leuchtmittel in der Form einer LED-Platine 1 und einen der LED-Platine 1 zugeordneten Reflektor 2a einer optischen Einrichtung aufweisen. Entsprechend besitzt der Platinenhalter 3 auch nur einen Trägerarm 2b, welcher von der vorderen Stirnseite des Platinenhalterkörpers 3a geradlinig abragt. Der Trägerarm 3b weist in bereits beschriebener Weise an seinem vorderen, freien Endabschnitt eine Aufnahme 4 auf, in welcher die LED-Platine 1 der Leuchteneinheit eingeschoben werden kann. Am hinteren Endbereich der Aufnahme 4 ist eine Druckfeder 6 vorgesehen, die wirksam ist, um eine in die Aufnahme 4 eingesetzte LED-Platine 1 in der Längsrichtung 7 des Trägerarms 3b aus der Aufnahme 4 zu drücken, so dass die LED-Platine 1 an der offenen Stirnseite aus der Aufnahme 4 ragt. Ferner ist der Aufnahme 4 eine Druckfeder 7 zugeordnet, die auf die Oberseite der LED-Platine 1 wirkt, um diese nach unten in Richtung des Bodens der Aufnahme 4 niederzudrücken. Die Druckfeder ist wie bei der ersten Ausführungsform in der Form einer Blattfeder 7 ausgebildet, deren hinterer Endabschnitt an der Rückseite der Aufnahme 4 mit dem Trägerarm 3b verbunden ist und die sich in der Längsrichtung Z des Trägerarms 3b über die Aufnahme 4 erstreckt.In the Figures 6 to 9 a further embodiment of an LED light according to the present invention is shown. This corresponds to the embodiment explained above, with the proviso that the LED lamp have only a single lamp unit with a lamp in the form of an LED board 1 and a reflector 2a of an optical device assigned to the LED board 1. Correspondingly, the circuit board holder 3 also has only one support arm 2b, which protrudes in a straight line from the front end face of the circuit board holder body 3a. In the manner already described, the support arm 3b has a receptacle 4 on its front, free end section, into which the LED circuit board 1 of the lamp unit can be inserted. At the rear end of the receptacle 4, a compression spring 6 is provided, which is effective to press an LED board 1 inserted into the receptacle 4 in the longitudinal direction 7 of the support arm 3b out of the receptacle 4, so that the LED board 1 on the open face from the receptacle 4 protrudes. Furthermore, a compression spring 7 is assigned to the receptacle 4, which acts on the upper side of the LED circuit board 1 in order to press it downward in the direction of the bottom of the receptacle 4. As in the first embodiment, the compression spring is designed in the form of a leaf spring 7, the rear end section of which is connected to the rear of the receptacle 4 with the support arm 3b and which extends in the longitudinal direction Z of the support arm 3b over the receptacle 4.

Der Reflektor 2a ist an einem Reflektorhalter 8 angeordnet, der eine Trägeraufnahme 9 besitzt, in der welche der Trägerarm 3b des Platinenhalters 3 eingeschoben werden kann. Die Trägeraufnahme 9 definiert dabei seitlichen Führungsnuten 9a, 9b, in welche die seitlichen Ränder des Trägerarms 3b eingreifen. Im Übrigen ist die Trägeraufnahme 9 zu ihrer Oberseite hin offen.The reflector 2a is arranged on a reflector holder 8 which has a carrier receptacle 9 into which the carrier arm 3b of the circuit board holder 3 can be inserted. The carrier receptacle 9 defines the side Guide grooves 9a, 9b into which the lateral edges of the support arm 3b engage. In addition, the carrier receptacle 9 is open on its upper side.

Am vorderen Endabschnitt der LED-Platine 1 einerseits und an dem vorderen Endbereich der Trägeraufnahme 9 andererseits sind einander zugeordnete Anlageflächen ausgebildet, um die LED-Platine 1 in dem Reflektorhalter 8 und damit gegenüber dem Reflektor 2a zu positionieren, wenn der Trägerarm 3b vollständig in die Trägeraufnahme 9 eingeschoben ist.At the front end section of the LED board 1 on the one hand and on the front end region of the carrier receptacle 9 on the other hand, mutually assigned contact surfaces are formed in order to position the LED board 1 in the reflector holder 8 and thus opposite the reflector 2a when the carrier arm 3b is completely in the Carrier receptacle 9 is inserted.

Konkret weist die LED-Platine 1 an ihrem vorderen Endbereich einen Zentriervorsprung 10 auf, der in eine korrespondierende Zentrierausnehmung 11 der zugehörigen Trägeraufnahme 9 eingreift, um die LED-Platine 1 in einer quer zur Einschubrichtung Z verlaufenden Y-Richtung zu zentrieren. Der Zentriervorsprung 10 besitzt hierzu an seinen gegenüberliegenden Seiten entsprechende seitliche Anlageflächen 10a, 10b, die mit korrespondierenden Anlageflächen 11a, 11b der Zentrierausnehmung 11 in Kontakt kommen. Ferner weisen die LED-Platine 1 und der Reflektorhalter 8 Anlageflächen auf, um die LED-Platine 1 an dem Reflektorhalter 8 in der Einschubrichtung Z zu positionieren. Diese Z-Anlageflächen 12a, 12b; 13a, 13b der LED-Platine 1 sind hier an den in Y-Richtung gegenüberliegenden Seiten der Schulter des Zentriervorsprungs 10 des Platinenkörpers 3a und den an der Zentrierausnehmung 11 vorhandenen Schulterflächen der Trägeraufnahme 9 ausgebildet.Specifically, the LED circuit board 1 has a centering projection 10 at its front end area, which engages in a corresponding centering recess 11 of the associated carrier receptacle 9 in order to center the LED circuit board 1 in a Y direction running transversely to the insertion direction Z. For this purpose, the centering projection 10 has corresponding lateral contact surfaces 10a, 10b on its opposite sides, which come into contact with corresponding contact surfaces 11a, 11b of the centering recess 11. Furthermore, the LED circuit board 1 and the reflector holder 8 have contact surfaces in order to position the LED circuit board 1 on the reflector holder 8 in the insertion direction Z. These Z-contact surfaces 12a, 12b; 13a, 13b of the LED board 1 are formed here on the opposite sides in the Y direction of the shoulder of the centering projection 10 of the board body 3a and the shoulder surfaces of the carrier receptacle 9 present on the centering recess 11.

Zur Positionierung der LED-Platine 1 in einer X-Richtung, die senkrecht zu der YZ-Ebene verläuft, bildet die Unterseite der LED-Platine 1 jeweils eine Anlagefläche. Eine korrespondierende Anlagefläche 14 ist am Boden der Trägeraufnahme 9 ausgebildet und gegenüber den umliegenden Bodenbereichen erhaben, d.h. die Anlagefläche 14 steht nach oben über den Boden der Trägeraufnahme 9 vor. Dabei ist der vordere Endabschnitt der Anlagefläche 14 als eine Auflaufschräge 14a ausgebildet, die mit der zugehörigen LED-Platine 1 zusammenwirkt, um diese beim Einschieben des Trägerarms 3b anzuheben.To position the LED board 1 in an X direction that runs perpendicular to the YZ plane, the underside of the LED board 1 each forms a contact surface. A corresponding contact surface 14 is formed on the bottom of the carrier receptacle 9 and is raised in relation to the surrounding floor areas, ie the contact surface 14 projects upwards over the bottom of the carrier receptacle 9. The front end section is the contact surface 14 designed as a run-up slope 14a, which cooperates with the associated LED board 1 in order to raise it when the carrier arm 3b is pushed in.

Zur Montage der LED-Leuchte 1 wird zunächst die LED-Platine 1 in die beiden Aufnahmen 4 der Trägerarme 3b des Platinenhalters 3 von deren offenen Stirnseite her eingeschoben. Anschließend wird der Platinenhalter 3 mit dem Reflektorhalter 8 verbunden, indem die Trägerarme 3b des Platinenhalters 3 in die zugehörige Trägeraufnahme 9 des Reflektorhalters 8 eingeschoben werden, bis der Platinenhalterkörper 3a an dem Reflektorhalter 8 in Anlage kommt. In dieser Endposition werden der Platinenhalter 3 und der Reflektorhalter 8 miteinander lösbar verbunden, nämlich verschraubt.To assemble the LED lamp 1, the LED circuit board 1 is first pushed into the two receptacles 4 of the support arms 3b of the circuit board holder 3 from their open end face. Then the circuit board holder 3 is connected to the reflector holder 8 by inserting the support arms 3b of the circuit board holder 3 into the associated carrier receptacle 9 of the reflector holder 8 until the circuit board holder body 3a comes into contact with the reflector holder 8. In this end position, the circuit board holder 3 and the reflector holder 8 are releasably connected to one another, namely screwed.

Beim Einschieben des Trägerarms 3b in die Trägeraufnahme 9 kommt der Zentriervorsprung 10 an dem vorderen Endbereich des Substrats 1a der LED-Platine 1 mit der zugehörigen Zentierausnehmung 11 der Trägeraufnahme 9 in Eingriff, wodurch die LED-Platine 1 in der Y-Richtung zentriert wird. Außerdem kommen die Z-Anlageflächen 12a, 12b im Bereich der Schultern der LED-Platine 1 auf den gegenüberliegenden Seiten des Zentriervorsprungs 10 mit den korrespondierenden Anlageflächen 13a, 13b des Reflektorhalters 8 in Eingriff, um die LED-Platine 1 in der Einschubrichtung Z zu positionieren. Nach der Positionierung der LED-Platine 1 in der Z-Richtung führt ein weiteres Einschieben der Trägerarme 3a dazu, dass die Druckfedern 6 im hinteren Endbereich der Aufnahmen 4 zusammengedrückt und damit gespannt werden, so dass durch die Rückstellkraft der Druckfedern 6 sichergestellt wird, dass die LED-Platine 1 an den Z-Anlageflächen 13a, 13b des Reflektorhalters 8 gehalten werden.When the carrier arm 3b is pushed into the carrier receptacle 9, the centering projection 10 on the front end region of the substrate 1a of the LED board 1 engages with the associated centering recess 11 of the carrier receptacle 9, whereby the LED board 1 is centered in the Y direction. In addition, the Z contact surfaces 12a, 12b in the area of the shoulders of the LED board 1 on the opposite sides of the centering projection 10 engage with the corresponding contact surfaces 13a, 13b of the reflector holder 8 in order to position the LED board 1 in the insertion direction Z. . After the LED circuit board 1 has been positioned in the Z direction, a further pushing in of the support arms 3a results in the compression springs 6 being compressed in the rear end area of the receptacles 4 and thus tensioned, so that the restoring force of the compression springs 6 ensures that the LED board 1 can be held on the Z contact surfaces 13a, 13b of the reflector holder 8.

Beim Einschieben des Trägerarms 3a wird die LED-Platine 1 ferner durch das Zusammenwirken mit der Auflaufschräge 14b am Boden der Trägeraufnahme 9 entgegen der Rückstellkraft der Blattfeder 7, welche die Aufnahme 4 übergreift, leicht angehoben, so dass die LED-Platine 1 durch die Blattfeder 7 gegen die Anlagefläche 14 am Boden der Trägeraufnahme 9 gedrückt wird, um die LED-Platine 1 in X-Richtung zu positionieren.When the carrier arm 3a is pushed in, the LED circuit board 1 is furthermore due to the interaction with the run-up bevel 14b on the bottom of the carrier receptacle 9 against the restoring force of the leaf spring 7, which engages over the receptacle 4, slightly raised, so that the LED board 1 is pressed by the leaf spring 7 against the contact surface 14 on the bottom of the carrier receptacle 9 to the LED board 1 in the X direction to position.

Schließlich ist in Figur 10 ein Reflektorhalter 8 dargestellt, der eine optische Einrichtung 2 trägt, welche einen Reflektor 2a und eine daran positionierte Linse 2b umfasst. Die Trägeraufnahme 9 ist hier wie bei den beiden zuvor beschriebenen Ausführungsformen ausgebildet. Die seitlichen Ränder der Trägeraufnahme 9 sind hier schwalbenschwanzartig ausgebildet, um die korrespondierend ausgebildeten Ränder einer LED-Platine zu führen und an dem Reflektorhalter gegen ein Lösen nach oben hin zu fixieren.After all, in Figure 10 a reflector holder 8 is shown, which carries an optical device 2 which comprises a reflector 2a and a lens 2b positioned thereon. The carrier receptacle 9 is designed here as in the two previously described embodiments. The lateral edges of the carrier receptacle 9 are here dovetail-like in order to guide the correspondingly designed edges of an LED board and to fix them on the reflector holder against loosening upwards.

Claims (11)

  1. LED light, in particular an LED vehicle headlight, comprising a light unit or a number of light units, each light unit having an illuminant in the form of an LED board (1) with a luminous surface (1b) and an optical device (2) assigned to the illuminant (1) with at least one reflector (2a) and/or at least one lens (2b), wherein a reflector holder (8) is provided that carries the optical devices (2) of the light unit or light units that are provided and in particular is formed in one piece with the latter, that a board holder (3) is provided that is fastened detachably to the reflector holder (8), that the board holder (3) has a receptacle (4) for each light unit in which the LED board (1) of the light unit is positioned, characterized in that the LED board (1) has contact surfaces that come into contact with corresponding contact surfaces on the reflector holder (8) in order to position the LED board (1) in the receptacle (4) with respect to that of the assigned optical device (2) when the board holder (3) is fixed on the reflector holder (8), and that there are assigned to each light unit (3) elastic pressurising means (6, 7) which are provided on the board holder (3) and/or the reflector holder (8) and act on the LED board (1) of the light unit in order to press its contact surfaces against the contact surfaces of the reflector holder (8) when the board holder (3) is fixed on the reflector holder (8).
  2. LED light according to claim 1, characterized in that each receptacle (4) for an LED board (1) is open to a front face side of the board holder (3) and the assigned LED board (1) on the open face side projects out of the receptacle (4), on the end section of the LED board (1) projecting out of the receptacle (4) the contact surfaces of the LED boards (1) being designed for the positioning of the LED boards (1) with respect to the respective associated optical device (2).
  3. LED light according to claim 1 or 2, characterized in that the board holder (3) has a board holder body (3a) and there is assigned to each light unit a carrier arm (3b) which projects in a straight line from the front side of the board holder body (3a), the receptacle (4) for the LED board (1) of the light unit being formed on the free front end section of the carrier arm (3b).
  4. LED light according to claim 3, characterized in that there is assigned to the carrier arm (3b) of each light unit a carrier receptacle (9) in the reflector holder (8) into which the carrier arm (3b) can be inserted in a straight line from the rear side of the reflector holder (8), the carrier receptacle (9) defining in particular lateral guide grooves (9a, 9b) in which the lateral edges of the assigned carrier arm (3b) engage.
  5. LED light according to claim 4, characterized in that each LED board (1) can be moved in the associated receptacle (4) of a carrier arm (3b) parallel to the direction of insertion (Z) of the carrier arm (3b) and there are provided in the rear end region of the receptacle (4) elastic pressurising means (6) which push the LED board (1) elastically forwards out of the receptacle (4), the LED board (1) having in particular on its front end region a centring projection (10) which engages in a corresponding centring recess (11) of the associated carrier receptacle (9) in order to centre the LED board (1) in a Y direction running transversely to the direction of insertion Z, the centring projection (10) and the centring recess (11) respectively having lateral contact surfaces (10a, 10b; 11a, 11b) lying opposite one another.
  6. LED light according to claim 5, characterized in that each LED board (1) has contact surfaces (12a, 12b) to which corresponding contact surfaces (13a, 13b) on the reflector holder (8) are assigned in order to position the LED board (1) on the reflector holder (8) in the direction of insertion (Z), the Z contact surfaces (12a, 12b) of the LED board (1) preferably being formed on opposite sides of the centring projection (10).
  7. LED light according to any of claims 4 to 6, characterized in that each LED board (1) forms on its lower side a contact surface that interacts with a corresponding contact surface (14) of the reflector holder (8) which is elevated from the bottom of the assigned carrier receptacle (9) in order to position the LED board (1) in an X direction running transversely to the direction of insertion (Z).
  8. LED light according to claim 7, characterized in that each light unit is provided with elastic pressurising means (7) on the reflector holder (8) or the board holder (3) which act on the upper side of the LED board (1) of the light unit in order to press the lower side of the LED board (1) against the corresponding contact surface (14) of the reflector holder (8), leaf springs (7) in particular being provided as elastic pressurising means on the board holder (3) which extend from the rear side to the front side of the receptacle (4) of the light unit.
  9. LED light according to any of claims 4 to 8, characterized in that the board holder body (3a) comes to rest against the reflector holder (8) in order to fix the end position of the board holder (3) with respect to the reflector holder (8) in the direction of insertion Z.
  10. LED light according to any of the preceding claims, characterized in that the board holder (3) is screwed to the reflector holder (8) and/or in that control electronics for the LED boards (1) are provided on the board holder (3) and/or in that a total of four light units are provided.
  11. A reflector arrangement for an LED light, in particular an LED vehicle headlight, comprising a light unit or a number of light units, each light unit having an illuminant in the form of an LED board (1) with a luminous surface (1b) and an optical device (2) assigned to the illuminant (1), according to any of claims 1 to 10, comprising a reflector holder (8) which carries the optical device (2) of the light units provided and in particular is formed in one piece with the latter, there being assigned to each light unit a carrier receptacle (9) in the reflector holder (8) into which a carrier arm of a board holder can be inserted in a straight line from the rear side of the reflector holder (8), and there being formed in the front end region of each carrier receptacle (9) contact surfaces in order to respectively position an LED board in the carrier receptacle (9), each carrier receptacle (9) defining in particular lateral guide grooves (9a, 9b) in which the lateral edges of the assigned carrier arm (3b) engage, wherein there are formed in the carrier receptacle (9), in particular in the region of a face side end surface of the carrier receptacle (9), a centring recess (11) in order to centre an LED board (1) in a Y direction running transversely to the direction of insertion (Z) and at least one contact surface in order to position an LED board (1) in the direction of insertion (Z), and/or that there is formed in the region of the bottom of the carrier receptacle (9) a contact surface (14) which is elevated from the bottom of the carrier receptacle (9).
EP15157160.1A 2014-03-06 2015-03-02 Led light Active EP2915698B1 (en)

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EP14158090 2014-03-06
EP14002159 2014-06-24
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CN104896397B (en) 2020-04-03
US9752744B2 (en) 2017-09-05
US20150252973A1 (en) 2015-09-10
CN104896397A (en) 2015-09-09

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