EP2710296B1 - Lighting unit for a household appliance - Google Patents

Lighting unit for a household appliance Download PDF

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Publication number
EP2710296B1
EP2710296B1 EP12723112.4A EP12723112A EP2710296B1 EP 2710296 B1 EP2710296 B1 EP 2710296B1 EP 12723112 A EP12723112 A EP 12723112A EP 2710296 B1 EP2710296 B1 EP 2710296B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
printed circuit
holding part
lighting unit
unit according
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
EP12723112.4A
Other languages
German (de)
French (fr)
Other versions
EP2710296A1 (en
Inventor
Rainer Kizele
Heinrich Müller
Wolfgang MOOSMANN
Björn WERHAN
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.)
Marquardt Mechatronik GmbH
Original Assignee
Marquardt Mechatronik GmbH
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Publication date
Application filed by Marquardt Mechatronik GmbH filed Critical Marquardt Mechatronik GmbH
Priority to PL12723112T priority Critical patent/PL2710296T3/en
Publication of EP2710296A1 publication Critical patent/EP2710296A1/en
Application granted granted Critical
Publication of EP2710296B1 publication Critical patent/EP2710296B1/en
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0044—Household appliances, e.g. washing machines or vacuum cleaners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0045—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/198—Snap-fit attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • 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 invention relates to a lighting according to the preamble of patent claim 1.
  • Such lights are used in particular as LED lighting in the home appliance sector, for example in washing machines and dryers, dishwashers, etc., use. Namely, these are used in particular for lighting the work space in the household appliance, so for example as drum lighting in household appliances.
  • Suitable lighting has a circuit board and a socket for receiving the circuit board. On the circuit board, a light source is arranged. It has been found that problems can occur in the guidance of the heat generated by the lamp. This in turn affects the life of the lighting.
  • a lighting for a washing machine in which the circuit board is arranged on a holding part, whereby a soupleitcard between the circuit board and the holding part is provided.
  • the holding part is in turn attached to the base, by clamping on the base, so that a heat transfer from the holding part is provided to the base.
  • US 2006/141851 A1 discloses a lighting according to the preamble of claim 1.
  • the invention has for its object to further develop the lighting so that improved heat dissipation is achieved by the light source.
  • the holding part comprises an elongated rod element. At one end of the rod element, the pocket and at the other end of the rod element, a plug and / or solder connection is formed.
  • the length of the rod element can then be flexibly adapted to the length of the socket.
  • the size of the base, which ultimately serves as a heat sink for lighting, can then in turn be determined according to the respective requirements for the cooling of the lighting in a simple manner.
  • the simple attachment of half for the circuit board is the bag, in which the circuit board is plugged in for attachment, hook-shaped.
  • the holding part simultaneously serves to supply the electrical voltage for the lighting means.
  • the printed circuit board is electrically contacted at the pocket located at one end.
  • the circuit board is electrically contacted by two holding parts and / or mechanically attached.
  • the two holding parts are designed substantially identical.
  • a lid is placed on the base.
  • the base and lid then form a housing for the lighting.
  • a light-permeable protective cap can be placed, the size of which can be adapted in a flexible manner to the installation situation in the household appliance.
  • the lamp consists of a low-cost and durable LED (LED).
  • LED low-cost and durable LED
  • the light-emitting diode is soldered onto the printed circuit board as an SMD (surface mounted device) component.
  • SMD surface mounted device
  • two contact surfaces for making electrical contact with the holding parts can be provided on the printed circuit board.
  • the base area of the printed circuit board is only insignificantly larger than that of the illuminant.
  • the circuit board on a base surface whose size corresponds substantially to the sum of the surfaces of the lamp and the contact surfaces.
  • the holding part can be formed as a punching and / or bending element. Consequently, a very flexibly adaptable concept for the lighting in different domestic appliances is obtained.
  • the circuit board is arranged substantially perpendicular to the longitudinal axis of the holding part, in particular perpendicular to the rod member of the holding part.
  • the printed circuit board can also be arranged inclined to the longitudinal axis of the holding part, in particular so inclined to the rod element of the holding part.
  • the holding part made of metal, whereby a good thermal conductivity is given by the light source to serving as a cooling surface base.
  • the base and / or the lid and / or the protective cap made of plastic.
  • the unfavorable heat conduction of the base made of plastic can be compensated by an enlargement of the base, in particular in the longitudinal direction, in a simple manner.
  • the plastic for the base and / or the lid and / or the protective cap may be a thermoplastic material, whereby these parts are inexpensive to produce by injection molding.
  • an LED lighting in which the LED is soldered on a small standard PCB by means of an SMD process.
  • This circuit board has a base area which is only slightly larger than the LED itself and in addition to the LED solder pads has only two contact surfaces through which the circuit board can be contacted.
  • the contacting takes place via two simple punched parts, each having at one end a pocket into which the printed circuit board can be inserted and thus contacted.
  • the stamped parts can be formed into plug and / or solder connections. To ensure good heat dissipation, the stamped parts are clamped between the plastic housing parts in such a way that good heat transfer from the stamped part to the housing parts can take place.
  • Fig. 1 is a lighting 1 for a household appliance to see.
  • the lighting 1 is used for example as drum lighting for the drum of a washing machine, a tumble dryer o. The like. Or as lighting for another work space in a domestic appliance use.
  • the lighting 1 has a housing 2, which consists of a base 3 and a lid 4.
  • the lid 4 is placed on the base 3, as can be seen from Fig. 2 recognizes.
  • Fig. 2 can be seen is located in the housing 2 a Printed circuit board 5, wherein on the circuit board 5 from a light emitting diode (LED) existing light source 6 is arranged.
  • LED light emitting diode
  • the base 3 is located on the front side a recess 7 for receiving the circuit board 5.
  • In the housing 2 is still a metallic support member 8.
  • the circuit board 5 is arranged on the metallic support member 8 such that a good réelleleitcard between the circuit board 5 and the holding part 8 is created. Furthermore, the holding part 8 is fixed to the base 3, by clamping the holding part 8 in a corresponding receptacle 16 in the base 3, that a good heat transfer from the holding part 8 is provided to the base 3.
  • the resulting in the light bulb 6 heat loss in a simple way on the circuit board 5, the holding part 8 and serving as a cooling surface base 3 to the environment or to the home appliance housing, in which the lighting 1 is installed dissipate.
  • a heat sink may additionally be arranged on the base 3, but this is not shown further.
  • the holding part 8 has at one end a hook-shaped bag 9, in which the circuit board 5 is inserted for attachment.
  • the holding part 8 has on the pocket 9 a contact pin 10, which is inserted in the pocket 9 printed circuit board 5 at a corresponding contact surface 17 on the circuit board 5 for electrical contacting of the bulb 6 is applied.
  • a plug and / or solder connection 11 is formed for the electrical power supply.
  • the circuit board 5 by means of two holding parts 8, 8 ', which are designed substantially identical, contacted.
  • a plug 12 which serves to connect the lighting 1 to the supply voltage, the housing 2 can be plugged.
  • the two holding parts 8, 8 ' also effect a secure attachment of the printed circuit board 5 in the base 3.
  • the holding part 8, 8' which comprises an elongate rod member 18, together with the formed at one end of the rod member 18 pocket 9, the contact pin 10 and
  • the plug-in and / or solder connection 11 formed on the other end of the rod element 18 can be produced as a stamped and / or bent element.
  • the light-emitting diode 6 may be formed as an SMD (surface mounted device) component.
  • the light emitting diode 6 is soldered to the circuit board 5 in the SMD method.
  • two contact surfaces 17 are provided for electrical contacting by the holding parts 8, 8 ', wherein in Fig. 2 however, only one contact surface 17 is designated.
  • the printed circuit board 5 then has a base area whose size substantially corresponds to the sum of the areas of the light-emitting diode 6 and the contact surfaces 17. As based on the Fig. 2 can be seen, so that the base of the circuit board 5 is only slightly larger than that of the light emitting diode 6, whereby a very compact designed lighting 1 is possible.
  • the circuit board 5 is substantially perpendicular to the longitudinal axis of the holding part 8, 8 'and the rod member 18, wherein the longitudinal axis is designated by the directional arrow 15, respectively.
  • the in Fig. 3 is shown, the circuit board 5 is inclined to the longitudinal axis of the holding part 8, 8 'or the rod member 18 is arranged.
  • the recess 7 is provided in the base with a corresponding slope, and the pocket 9 on the holding part 8, 8 'at an angle to the longitudinal axis 15 of the holding part 8, 8' arranged.
  • the plug connection on the holding part 8, 8 ' is not bent but extends along the longitudinal axis 15 of the rod element 18.
  • the plug 12 can then be attached to the rear side of the housing 2, while in the embodiment according to FIG Fig. 2 the plug 12 can be attached to the housing 2 from below.
  • Fig. 2 is on the printed circuit board 5 facing the front of the housing 2, a light-transmitting cap 13 is placed.
  • the protective cap 13 and / or the lid 4 corresponding to the inclination of the circuit board 5 is provided with a bevel 14.
  • the holding part 8, 8 ' is made of metal, namely of a metal with good electrical conductivity and good thermal conductivity.
  • the metal may be copper, copper-beryllium, bronze, brass or the like.
  • the base 3, the lid 4 and the protective cap 13 are made of plastic. Preferred for this purpose is a thermoplastic Plastic, so that these parts can be produced in a cost effective manner by injection molding.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Description

Die Erfindung betrifft eine Beleuchtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a lighting according to the preamble of patent claim 1.

Solche Beleuchtungen finden insbesondere als LED-Beleuchtungen im Hausgerätebereich, zum Beispiel in Waschmaschinen und Wäschetrocknern, Geschirrspülern usw., Verwendung. Und zwar werden diese insbesondere zur Beleuchtung für den Arbeitsraum im Hausgerät, also beispielsweise als Trommelbeleuchtung in Hausgeräten, eingesetzt.Such lights are used in particular as LED lighting in the home appliance sector, for example in washing machines and dryers, dishwashers, etc., use. Namely, these are used in particular for lighting the work space in the household appliance, so for example as drum lighting in household appliances.

Eine derartige für die Trommel einer Waschmaschine, eines Wäschetrockners o. dgl. geeignete Beleuchtung weist eine Leiterplatte sowie einen Sockel für die Aufnahme der Leiterplatte auf. Auf der Leiterplatte ist ein Leuchtmittel angeordnet. Es hat sich herausgestellt, dass Probleme bei der Anführung der vom Leuchtmittel erzeugten Wärme auftreten können. Dies beeinträchtigt wiederum die Lebensdauer der Beleuchtung.Such for the drum of a washing machine, a tumble dryer o. The like. Suitable lighting has a circuit board and a socket for receiving the circuit board. On the circuit board, a light source is arranged. It has been found that problems can occur in the guidance of the heat generated by the lamp. This in turn affects the life of the lighting.

Aus der WO 2007/021082 A2 ist eine Beleuchtung für eine Waschmaschine bekannt, bei der die Leiterplatte an einem Halteteil angeordnet ist, wodurch ein Wärmeleitkontakt zwischen der Leiterplatte und dem Halteteil geschaffen ist. Das Halteteil ist seinerseits am Sockel befestigt, und zwar durch Einklemmen am Sockel, so dass ein Wärmeübergang vom Halteteil zum Sockel geschaffen ist.From the WO 2007/021082 A2 a lighting for a washing machine is known in which the circuit board is arranged on a holding part, whereby a Wärmeleitkontakt between the circuit board and the holding part is provided. The holding part is in turn attached to the base, by clamping on the base, so that a heat transfer from the holding part is provided to the base.

Weitere Beleuchtungen für eine Waschmaschine sind in der EP 1048 775 A1 und der EP 1 918 448 A1 gezeigt. Schließlich ist in der US 2010/091494 A1 eine Beleuchtung für ein Geländer sowie in der DE 10 2004 062 583 A1 eine Leuchte für ein Kraftfahrzeug beschrieben.Other lights for a washing machine are in the EP 1048 775 A1 and the EP 1 918 448 A1 shown. Finally, in the US 2010/091494 A1 a lighting for a railing as well as in the DE 10 2004 062 583 A1 a lamp for a motor vehicle described.

Weiterhin ist für Beleuchtungs-Anwendungen aus der US 2006/141851 A1 eine LED-Beleuchtung bekannt, bei der das Halteteil eine Tasche aufweist, in die die Leiterplatte zur Befestigung eingesteckt ist. Das Halteteil dient gleichzeitig der Zuführung der elektrischen Spannung für das Leuchtmittel. Hierzu ist die Leiterplatte an der Tasche elektrisch kontaktiert. US 2006/141851 offenbart eine Beleuchtung gemäß dem Oberbegriff des Anspruchs 1.Furthermore, for lighting applications from the US 2006/141851 A1 a LED lighting known in which the holding part has a pocket into which the circuit board is plugged for attachment. The holding part serves at the same time to supply the electrical voltage for the lamp. For this purpose, the circuit board is electrically contacted to the bag. US 2006/141851 discloses a lighting according to the preamble of claim 1.

Der Erfindung liegt die Aufgabe zugrunde, die Beleuchtung derart weiterzuentwickeln, dass eine verbesserte Wärmeabfuhr vom Leuchtmittel erzielt ist.The invention has for its object to further develop the lighting so that improved heat dissipation is achieved by the light source.

Insbesondere soll ausgehend von der bekannten LED-Trommelbeleuchtung ein Konzept entwickelt werden, das im wesentlichen die folgenden Nachteile vermeidet:

  • Verbesserung der Entwärmung der LED, damit diese mit höheren Stromstärken betrieben werden kann, womit wiederum die Lichtausbeute erhöht werden kann.
  • Vermeidung der bisher eingesetzten relativ teueren Leiterplatte mit extra dicker Kupferbeschichtung.
  • Beibehaltung von kompakten Abmessungen für die Beleuchtung.
In particular, based on the known LED drum lighting, a concept is to be developed which substantially avoids the following disadvantages:
  • Improvement of the cooling of the LED, so that it can be operated with higher currents, which in turn can increase the luminous efficacy.
  • Avoiding the previously used relatively expensive PCB with extra thick copper coating.
  • Maintaining compact dimensions for lighting.

Diese Aufgabe wird bei einer gattungsgemäßen Beleuchtung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved in a generic lighting by the characterizing features of claim 1.

Bei der erfindungsgemäßen Beleuchtung umfasst das Halteteil ein längliches Stabelement. An dem einen Ende des Stabelements ist die Tasche und an dem anderen Ende des Stabelements ein Steck- und/oder Lötanschluss angeformt. Die Länge des Stabelements lässt sich dann in flexibler Weise an die Länge des Sockels anpassen. Die Größe des Sockels, der letztendlich als Kühlkörper für die Beleuchtung dient, lässt sich dann wiederum entsprechend den jeweiligen Erfordernissen für die Entwärmung der Beleuchtung in einfacher Weise bestimmen. Der einfachen Befestigung halber für die Leiterplatte ist die Tasche, in die die Leiterplatte zur Befestigung eingesteckt ist, hakenförmig ausgestaltet. Zur Einsparung von weiteren Bauteilen dient das Halteteil gleichzeitig der Zuführung der elektrischen Spannung für das Leuchtmittel. Hierzu ist die Leiterplatte an der an dem einen Ende befindlichen Tasche elektrisch kontaktiert.In the illumination according to the invention, the holding part comprises an elongated rod element. At one end of the rod element, the pocket and at the other end of the rod element, a plug and / or solder connection is formed. The length of the rod element can then be flexibly adapted to the length of the socket. The size of the base, which ultimately serves as a heat sink for lighting, can then in turn be determined according to the respective requirements for the cooling of the lighting in a simple manner. The simple attachment of half for the circuit board is the bag, in which the circuit board is plugged in for attachment, hook-shaped. In order to save additional components, the holding part simultaneously serves to supply the electrical voltage for the lighting means. For this purpose, the printed circuit board is electrically contacted at the pocket located at one end.

Somit ist die zuverlässige Entwärmung des Leuchtmittels über das Halteteil und den Sockel an die Umgebungsluft und/oder an das Hausgerät an sich sichergestellt, was wiederum vorteilhafterweise die Lebensdauer des Leuchtmittels erhöht. Zudem handelt es sich hierbei um eine besonders kompakte Anordnung, die für beengte Einbauverhältnisse der Beleuchtung im Hausgerät geeignet ist. Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Thus, the reliable cooling of the light source via the holding part and the base to the ambient air and / or to the household appliance itself is ensured, which in turn advantageously increases the life of the light source. In addition, this is a particularly compact arrangement, which is suitable for cramped installation conditions of the lighting in the household appliance. Further embodiments of the invention are the subject of the dependent claims.

Am anderen Ende des Halteteils ist der Steck- und/oder Lötanschluss für die einfache Kontaktierung mit der Spannungsversorgung, also zum Anschluss an die elektrische Versorgungsspannung, angeformt. Zweckmäßigerweise ist dann die Leiterplatte mittels zwei Halteteilen elektrisch kontaktiert und/oder mechanisch befestigt. Der Einfachheit halber bietet es dabei an, dass die beiden Halteteile im wesentlichen identisch ausgestaltet sind.At the other end of the holding part of the plug and / or solder connection for easy contacting with the power supply, ie for connection to the electrical supply voltage is formed. Appropriately, then the circuit board is electrically contacted by two holding parts and / or mechanically attached. For the sake of simplicity, it offers the fact that the two holding parts are designed substantially identical.

Zum Schutz des Leuchtmittels bietet es sich an, dass ein Deckel auf den Sockel aufgesetzt ist. Der Sockel und der Deckel bilden dann ein Gehäuse für die Beleuchtung. Zweckmäßigerweise kann zum weiteren Schutz an der der Leiterplatte zugewandten Vorderseite eine lichtdurchlässige Schutzkappe aufgesetzt sein, deren Größe in flexibler Art und Weise der Einbausituation im Hausgerät entsprechend angepasst werden kann.To protect the bulb, it is advisable that a lid is placed on the base. The base and lid then form a housing for the lighting. Conveniently, for further protection on the front side facing the printed circuit board, a light-permeable protective cap can be placed, the size of which can be adapted in a flexible manner to the installation situation in the household appliance.

Bevorzugterweise besteht das Leuchtmittel aus einer kostengünstigen sowie langlebigen Leuchtdiode (LED). Der einfachen und/oder automatisierbaren Montage halber bietet es sich an, dass die Leuchtdiode als ein SMD(surface mounted device)-Bauteil auf die Leiterplatte aufgelötet ist. An der Leiterplatte können desweiteren zwei Kontaktflächen zur elektrischen Kontaktierung durch die Halteteile vorgesehen sein. Zwecks Kompaktheit der Beleuchtung ist die Grundfläche der Leiterplatte lediglich unwesentlich größer als diejenige des Leuchtmittels. Hierzu weist die Leiterplatte eine Grundfläche auf, deren Größe im wesentlichen der Summe der Flächen des Leuchtmittels und der Kontaktflächen entspricht.Preferably, the lamp consists of a low-cost and durable LED (LED). For simple and / or automatable assembly, it is advisable that the light-emitting diode is soldered onto the printed circuit board as an SMD (surface mounted device) component. Furthermore, two contact surfaces for making electrical contact with the holding parts can be provided on the printed circuit board. For the sake of compactness of the illumination, the base area of the printed circuit board is only insignificantly larger than that of the illuminant. For this purpose, the circuit board on a base surface whose size corresponds substantially to the sum of the surfaces of the lamp and the contact surfaces.

Der einfachen Herstellbarkeit halber kann das Halteteil als ein Stanz- und/oder Biege-Element ausgebildet sein. Man erhält folglich ein sehr flexibel anpassbares Konzept für die Beleuchtung in unterschiedlichen Hausgeräten.For ease of manufacture, the holding part can be formed as a punching and / or bending element. Consequently, a very flexibly adaptable concept for the lighting in different domestic appliances is obtained.

Eine gute Ausleuchtung des gewünschten Bereichs im Hausgerät ist häufig dadurch gegeben, indem die Leiterplatte im wesentlichen senkrecht zur Längsachse des Halteteils, insbesondere also senkrecht zum Stabelement des Halteteils, angeordnet ist. Falls es jedoch die Einbausituation im Hausgerät erfordert, kann die Leiterplatte auch geneigt zur Längsachse des Halteteils, insbesondere also geneigt zum Stabelement des Halteteils, angeordnet sein. Zweckmäßigerweise besteht das Halteteil aus Metall, womit eine gute Wärmeleitfähigkeit vom Leuchtmittel zu dem als Kühlfläche dienenden Sockel gegeben ist. In kostengünstiger Weise bestehen der Sockel und/oder der Deckel und/oder die Schutzkappe aus Kunststoff. Die ungünstigere Wärmeleitung des Sockels aus Kunststoff lässt sich dabei durch eine Vergrößerung des Sockels, insbesondere in dessen Längsrichtung, in einfacher Weise ausgleichen. Bei dem Kunststoff für den Sockel und/oder den Deckel und/oder die Schutzkappe kann es sich um einen thermoplastischen Kunststoff handeln, womit diese Teile kostengünstig im Spritzgießverfahren herstellbar sind.A good illumination of the desired area in the domestic appliance is often given by the circuit board is arranged substantially perpendicular to the longitudinal axis of the holding part, in particular perpendicular to the rod member of the holding part. However, if it requires the installation situation in the domestic appliance, the printed circuit board can also be arranged inclined to the longitudinal axis of the holding part, in particular so inclined to the rod element of the holding part. Conveniently, the holding part made of metal, whereby a good thermal conductivity is given by the light source to serving as a cooling surface base. In a cost effective manner, the base and / or the lid and / or the protective cap made of plastic. The unfavorable heat conduction of the base made of plastic can be compensated by an enlargement of the base, in particular in the longitudinal direction, in a simple manner. In the plastic for the base and / or the lid and / or the protective cap may be a thermoplastic material, whereby these parts are inexpensive to produce by injection molding.

Für eine besonders bevorzugte Ausgestaltung der Erfindung ist nachfolgendes festzustellen. Geschaffen ist eine LED-Beleuchtung, bei welcher die LED auf einer kleinen Standard-Leiterplatte mittels eines SMD-Prozesses aufgelötet ist. Diese Leiterplatte besitzt eine Grundfläche, die nur unwesentlich größer als die LED selbst ist und neben den LED-Lötflächen nur zwei Kontaktflächen besitzt, über die die Leiterplatte kontaktiert werden kann. Die Kontaktierung erfolgt über zwei einfache Stanzteile, die jeweils an einem Ende eine Tasche besitzen, in die die Leiterplatte gesteckt und damit kontaktiert werden kann. Am anderen Ende können die Stanzteile zu Steck- und/oder Lötanschlüssen geformt sein. Um eine gute Wärmeableitung zu gewährleisten, werden die Stanzteile zwischen den Kunststoff-Gehäuseteilen so geklemmt, dass ein guter Wärmeübergang vom Stanzteil zu den Gehäuseteilen erfolgen kann.For a particularly preferred embodiment of the invention is to be determined below. Created is an LED lighting, in which the LED is soldered on a small standard PCB by means of an SMD process. This circuit board has a base area which is only slightly larger than the LED itself and in addition to the LED solder pads has only two contact surfaces through which the circuit board can be contacted. The contacting takes place via two simple punched parts, each having at one end a pocket into which the printed circuit board can be inserted and thus contacted. At the other end, the stamped parts can be formed into plug and / or solder connections. To ensure good heat dissipation, the stamped parts are clamped between the plastic housing parts in such a way that good heat transfer from the stamped part to the housing parts can take place.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere in Folgendem:

  • Es ist eine gute Entwärmung der LED über die Stanzteile und die Gehäuseteile gegeben. Dadurch ergibt sich gegenüber der bisherigen Beleuchtung eine Temperaturreduzierung an der LED von beispielsweise 20°K. Aufgrund der Verbesserung der Kühlwirkung kann somit das Gehäuse verkleinert und die Beleuchtung kompakter ausgestaltet werden. Es ist damit auch der Einsatz der Beleuchtung in Hausgeräten bei höheren Umgebungstemperaturen möglich. Alternativ ist auch die Verwendung einer kostengünstigeren LED mit geringerer Junction Temperatur für die Beleuchtung ermöglicht.
  • Es ist eine einfache Anpassung an verschiedene LED-Typen durch Layout-Änderung der Leiterplatte ermöglicht.
  • Durch die flexiblen Gestaltungsmöglichkeiten der Stanzteile sind verschiedene Abstrahlrichtungen für die Wärme und/oder für das Licht des Leuchtmittels entsprechend den Einbaubedingungen realisierbar.
  • Es ist ein wasserdichter Aufbau der Beleuchtung möglich, da die Wärmeabfuhr durch direkten Kontakt der Stanzteile mit der Außenwand des Gehäuses erfolgt.
  • Die Herstellung der Beleuchtung erfolgt mittels kostengünstiger Standard-Herstellprozesse.
  • Die Beleuchtung besitzt kompakte Außenabmessungen.
The advantages achieved by the invention are in particular in the following:
  • There is a good heat dissipation of the LED over the stamped parts and the housing parts given. This results in comparison to the previous lighting, a temperature reduction on the LED, for example, 20 ° K. Due to the improvement in the cooling effect, the housing can thus be downsized and the lighting made more compact. It is thus also the use of lighting in home appliances at higher ambient temperatures possible. Alternatively, it is also possible to use a less expensive LED with a lower junction temperature for the illumination.
  • It is a simple adaptation to different LED types by layout change of the printed circuit board allows.
  • Due to the flexible design possibilities of the stamped parts different radiation directions for the heat and / or for the light of the lamp according to the installation conditions can be realized.
  • It is a waterproof construction of the lighting possible, since the heat dissipation takes place by direct contact of the stamped parts with the outer wall of the housing.
  • The production of the illumination takes place by means of inexpensive standard manufacturing processes.
  • The lighting has compact external dimensions.

Ausführungsbeispiele der Erfindung mit verschiedenen Weiterbildungen und Ausgestaltungen sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen

Fig. 1
eine Beleuchtung in perspektivischer Ansicht,
Fig. 2
die Beleuchtung aus Fig. 1 in Explosionsdarstellung und
Fig. 3
eine Beleuchtung entsprechend einer weiteren Ausführung.
Embodiments of the invention with various developments and refinements are illustrated in the drawings and will be described in more detail below. Show it
Fig. 1
a lighting in perspective view,
Fig. 2
the lights off Fig. 1 in exploded view and
Fig. 3
a lighting according to another embodiment.

In Fig. 1 ist eine Beleuchtung 1 für ein Hausgerät zu sehen. Die Beleuchtung 1 findet beispielsweise als Trommelbeleuchtung für die Trommel einer Waschmaschine, eines Wäschetrockners o. dgl. oder als Beleuchtung für einen sonstigen Arbeitsraum in einem Hausgerät Verwendung. Die Beleuchtung 1 besitzt ein Gehäuse 2, das aus einem Sockel 3 sowie einem Deckel 4 besteht. Dabei ist der Deckel 4 auf den Sockel 3 aufgesetzt, wie man anhand von Fig. 2 erkennt. Wie weiter in Fig. 2 zu sehen ist befindet sich im Gehäuse 2 eine Leiterplatte 5, wobei auf der Leiterplatte 5 ein aus einer Leuchtdiode (LED) bestehendes Leuchtmittel 6 angeordnet ist. Im Sockel 3 befindet sich an der Frontseite eine Aussparung 7 für die Aufnahme der Leiterplatte 5. Im Gehäuse 2 befindet sich weiterhin ein metallisches Halteteil 8. Die Leiterplatte 5 ist an dem metallischen Halteteil 8 derart angeordnet, dass ein guter Wärmeleitkontakt zwischen der Leiterplatte 5 und dem Halteteil 8 geschaffen ist. Desweiteren ist das Halteteil 8 derart am Sockel 3 befestigt, und zwar durch Einklemmen des Halteteils 8 in einer korrespondierenden Aufnahme 16 im Sockel 3, dass ein guter Wärmeübergang vom Halteteil 8 zum Sockel 3 geschaffen ist. Somit lässt sich die in dem Leuchtmittel 6 entstehende Verlustwärme in einfacher Weise über die Leiterplatte 5, das Halteteil 8 sowie den als Kühlfläche dienenden Sockel 3 an die Umgebung beziehungsweise an das Hausgeräte-Gehäuse, in dem die Beleuchtung 1 eingebaut ist, abführen. Falls gewünscht kann zur weiteren Verbesserung der Wärmeabfuhr noch zusätzlich ein Kühlkörper am Sockel 3 angeordnet sein, was jedoch nicht weiter gezeigt ist.In Fig. 1 is a lighting 1 for a household appliance to see. The lighting 1 is used for example as drum lighting for the drum of a washing machine, a tumble dryer o. The like. Or as lighting for another work space in a domestic appliance use. The lighting 1 has a housing 2, which consists of a base 3 and a lid 4. In this case, the lid 4 is placed on the base 3, as can be seen from Fig. 2 recognizes. As in further Fig. 2 can be seen is located in the housing 2 a Printed circuit board 5, wherein on the circuit board 5 from a light emitting diode (LED) existing light source 6 is arranged. In the base 3 is located on the front side a recess 7 for receiving the circuit board 5. In the housing 2 is still a metallic support member 8. The circuit board 5 is arranged on the metallic support member 8 such that a good Wärmeleitkontakt between the circuit board 5 and the holding part 8 is created. Furthermore, the holding part 8 is fixed to the base 3, by clamping the holding part 8 in a corresponding receptacle 16 in the base 3, that a good heat transfer from the holding part 8 is provided to the base 3. Thus, the resulting in the light bulb 6 heat loss in a simple way on the circuit board 5, the holding part 8 and serving as a cooling surface base 3 to the environment or to the home appliance housing, in which the lighting 1 is installed, dissipate. If desired, in order to further improve the heat dissipation, a heat sink may additionally be arranged on the base 3, but this is not shown further.

Das Halteteil 8 weist an einem Ende eine hakenförmig ausgestaltete Tasche 9 auf, in die die Leiterplatte 5 zur Befestigung eingesteckt ist. Das Halteteil 8 dient gleichzeitig auch der Zuführung der elektrischen Spannung für das Leuchtmittel 6. Hierfür besitzt das Halteteil 8 an der Tasche 9 einen Kontaktzapfen 10, der bei in die Tasche 9 eingesteckter Leiterplatte 5 an einer korrespondierenden Kontaktfläche 17 auf der Leiterplatte 5 zur elektrischen Kontaktierung des Leuchtmittels 6 anliegt. Am anderen Ende des Halteteils 8 ist ein Steck- und/oder Lötanschluss 11 für die elektrische Spannungsversorgung angeformt. Zur Komplettierung der Spannungszuführung ist die Leiterplatte 5 mittels zwei Halteteilen 8, 8', die im wesentlichen identisch gestaltet sind, kontaktiert. Auf die Steck- und/oder Lötanschlüsse 11 ist ein Stecker 12, der zum Anschluss der Beleuchtung 1 an die Versorgungsspannung dient, am Gehäuse 2 ansteckbar. Die beiden Halteteile 8, 8' bewirken auch eine sichere Befestigung der Leiterplatte 5 im Sockel 3. Das Halteteil 8, 8', das ein längliches Stabelement 18 umfasst, mitsamt der an dem einen Ende des Stabelements 18 angeformten Tasche 9, dem Kontaktzapfen 10 sowie dem am anderen Ende des Stabelements 18 angeformten Steck- und/oder Lötanschluss 11 lässt sich als ein Stanz- und/oder Biege-Element herstellen.The holding part 8 has at one end a hook-shaped bag 9, in which the circuit board 5 is inserted for attachment. For this purpose, the holding part 8 has on the pocket 9 a contact pin 10, which is inserted in the pocket 9 printed circuit board 5 at a corresponding contact surface 17 on the circuit board 5 for electrical contacting of the bulb 6 is applied. At the other end of the holding part 8, a plug and / or solder connection 11 is formed for the electrical power supply. To complete the voltage supply, the circuit board 5 by means of two holding parts 8, 8 ', which are designed substantially identical, contacted. On the plug and / or solder terminals 11, a plug 12, which serves to connect the lighting 1 to the supply voltage, the housing 2 can be plugged. The two holding parts 8, 8 'also effect a secure attachment of the printed circuit board 5 in the base 3. The holding part 8, 8', which comprises an elongate rod member 18, together with the formed at one end of the rod member 18 pocket 9, the contact pin 10 and The plug-in and / or solder connection 11 formed on the other end of the rod element 18 can be produced as a stamped and / or bent element.

Die Leuchtdiode 6 kann als ein SMD(surface mounted device)-Bauteil ausgebildet sein. In diesem Fall ist die Leuchtdiode 6 im SMD-Verfahren auf die Leiterplatte 5 aufgelötet. An der Leiterplatte 5 sind zwei Kontaktflächen 17 zur elektrischen Kontaktierung durch die Halteteile 8, 8' vorgesehen, wobei in Fig. 2 jedoch lediglich eine Kontaktfläche 17 bezeichnet ist. Die Leiterplatte 5 weist dann eine Grundfläche auf, deren Größe im wesentlichen der Summe der Flächen der Leuchtdiode 6 und der Kontaktflächen 17 entspricht. Wie anhand der Fig. 2 zu sehen ist, ist damit die Grundfläche der Leiterplatte 5 lediglich unwesentlich größer als diejenige der Leuchtdiode 6, womit eine sehr kompakt ausgestaltete Beleuchtung 1 ermöglicht ist.The light-emitting diode 6 may be formed as an SMD (surface mounted device) component. In this case, the light emitting diode 6 is soldered to the circuit board 5 in the SMD method. On the circuit board 5, two contact surfaces 17 are provided for electrical contacting by the holding parts 8, 8 ', wherein in Fig. 2 however, only one contact surface 17 is designated. The printed circuit board 5 then has a base area whose size substantially corresponds to the sum of the areas of the light-emitting diode 6 and the contact surfaces 17. As based on the Fig. 2 can be seen, so that the base of the circuit board 5 is only slightly larger than that of the light emitting diode 6, whereby a very compact designed lighting 1 is possible.

Wie anhand von Fig. 2 zu erkennen ist, ist die Leiterplatte 5 im wesentlichen senkrecht zur Längsachse des Halteteils 8, 8' beziehungsweise des Stabelements 18, wobei die Längsache mit dem Richtungspfeil 15 bezeichnet ist, angeordnet. Bei einer anderen Ausführung, die in Fig. 3 gezeigt ist, ist die Leiterplatte 5 geneigt zur Längsachse des Halteteils 8, 8' oder des Stabelements 18 angeordnet. Diese Ausgestaltung kann zweckmäßig für besondere Beleuchtungssituationen im Hausgerät sein. In diesem Fall ist auch die Aussparung 7 im Sockel mit einer entsprechenden Schräge versehen, sowie die Tasche 9 am Halteteil 8, 8' winklig zur Längsachse 15 des Halteteils 8, 8' angeordnet. Bei der Ausführung nach Fig. 3 ist im übrigen der Steckanschluss am Halteteil 8, 8' nicht abgebogen sondern verläuft entlang der Längsachse 15 des Stabelements 18. In diesem Fall ist dann der Stecker 12 an der Rückseite des Gehäuses 2 ansteckbar, während bei der Ausführung nach Fig. 2 der Stecker 12 von unten an das Gehäuse 2 ansteckbar ist.As based on Fig. 2 can be seen, the circuit board 5 is substantially perpendicular to the longitudinal axis of the holding part 8, 8 'and the rod member 18, wherein the longitudinal axis is designated by the directional arrow 15, respectively. In another embodiment, the in Fig. 3 is shown, the circuit board 5 is inclined to the longitudinal axis of the holding part 8, 8 'or the rod member 18 is arranged. This embodiment may be useful for special lighting situations in home appliance. In this case, the recess 7 is provided in the base with a corresponding slope, and the pocket 9 on the holding part 8, 8 'at an angle to the longitudinal axis 15 of the holding part 8, 8' arranged. In the execution after Fig. 3 Moreover, the plug connection on the holding part 8, 8 'is not bent but extends along the longitudinal axis 15 of the rod element 18. In this case, the plug 12 can then be attached to the rear side of the housing 2, while in the embodiment according to FIG Fig. 2 the plug 12 can be attached to the housing 2 from below.

Gemäß Fig. 2 ist an der der Leiterplatte 5 zugewandten Vorderseite des Gehäuses 2 eine lichtdurchlässige Schutzkappe 13 aufgesetzt. Bei der Ausführung nach Fig. 3 ist die Schutzkappe 13 und/oder der Deckel 4 korrespondierend zur Neigung der Leiterplatte 5 mit einer Abschrägung 14 versehen. Wie bereits erwähnt, besteht das Halteteil 8, 8' aus Metall, und zwar aus einem Metall mit guter elektrischer Leitfähigkeit sowie guter Wärmeleitfähigkeit. Beispielsweise kann es sich bei dem Metall um Kupfer, Kupfer-Beryllium, Bronze, Messing o. dgl. handeln. Der Sockel 3, der Deckel 4 und die Schutzkappe 13 bestehen aus Kunststoff. Bevorzugt ist hierfür ein thermoplastischer Kunststoff, so dass diese Teile in kostengünstiger Art und Weise mittels Spritzgießen herstellbar sind.According to Fig. 2 is on the printed circuit board 5 facing the front of the housing 2, a light-transmitting cap 13 is placed. In the execution after Fig. 3 is the protective cap 13 and / or the lid 4 corresponding to the inclination of the circuit board 5 is provided with a bevel 14. As already mentioned, the holding part 8, 8 'is made of metal, namely of a metal with good electrical conductivity and good thermal conductivity. For example, the metal may be copper, copper-beryllium, bronze, brass or the like. The base 3, the lid 4 and the protective cap 13 are made of plastic. Preferred for this purpose is a thermoplastic Plastic, so that these parts can be produced in a cost effective manner by injection molding.

Die Erfindung ist nicht auf die beschriebenen und dargestellten Ausführungsbeispiele beschränkt. Sie umfasst vielmehr auch alle fachmännischen Weiterbildungen im Rahmen der durch die Patentansprüche definierten Erfindung. So kann eine derartige Beleuchtung 1 nicht nur in Hausgeräten sondern auch in sonstigen Geräten mit einer Beleuchtung Verwendung finden.The invention is not limited to the described and illustrated embodiments. Rather, it also encompasses all expert developments within the scope of the invention defined by the claims. Thus, such lighting 1 can be found not only in home appliances but also in other devices with lighting use.

Bezugszeichen-Liste:

1:
Beleuchtung
2:
Gehäuse
3:
Sockel
4:
Deckel
5:
Leiterplatte
6:
Leuchtmittel / Leuchtdiode
7:
Aussparung (im Sockel)
8,8':
Halteteil
9:
Tasche
10:
Kontaktzapfen
11:
Steck- und/oder Lötanschluss
12:
Stecker
13:
Schutzkappe
14:
Abschrägung
15:
Richtungspfeil (Längsachse von Halteteil)
16:
Aufnahme (im Sockel)
17:
Kontaktfläche (an Leiterplatte)
18:
Stabelement
Reference numeral list:
1:
lighting
2:
casing
3:
base
4:
cover
5:
circuit board
6:
Bulb / light emitting diode
7:
Recess (in the base)
8,8 ':
holding part
9:
bag
10:
Contact pin
11:
Plug and / or solder connection
12:
plug
13:
protective cap
14:
bevel
15:
Directional arrow (longitudinal axis of holding part)
16:
Recording (in the pedestal)
17:
Contact surface (on printed circuit board)
18:
rod element

Claims (9)

  1. A lighting unit, in particular for a work area in a household appliance, for example, for the drum of a washing machine, of a laundry drier or the like, having a printed circuit board (5), having a lamp (6) arranged on the printed circuit board (5) and having a socket (3) for holding the printed circuit board (5), wherein the printed circuit board (5) is arranged on a holding part (8), in such a way that a good heat conducting contact is established between the printed circuit board (5) and the holding part (8), wherein the holding part (8) is attached to the socket (3), in particular by clamping to the socket (3), in such a way that a good heat transmission is established from the holding part (8) to the socket (3), wherein the holding part (8) has a pocket (9), into which the printed circuit board (5) is inserted for fastening, wherein the holding part (8) is used to supply the electrical voltage for the lamp (6), and wherein the printed circuit board (5) is electrically contacted to the pocket (9), characterized in that the holding part (8) comprises an elongated rod element (18), that pocket (9) is formed on the one end of the rod element (18) and a plug connection and/or solder connection (11) is formed on the other end of the rod element (18) for the connection to the electrical supply voltage, and that the pocket (9) is designed hook-shaped.
  2. A lighting unit according to Claim 1, characterized in that the printed circuit board (5) is electrically contacted and/or fastened by means of two holding parts (8, 8') in particular designed substantially identically.
  3. A lighting unit according to Claim 1 or 2, characterized in that a lid (4) is placed on the socket (3), in such a way that the socket (3) and the lid (4) form a housing (2) for the lighting unit (1), and that preferably a protective cap (13) permeable to light is placed on the front side facing the printed circuit board (5).
  4. A lighting unit according to claim 1, 2 or 3, characterized in that the lamp (6) consists of a light-emitting diode (LED), and that preferably the light emitting diode (6) is soldered onto the printed circuit board (5) as a SMD (surface mounted device)-component.
  5. A lighting unit according to any one of Claims 1 to 4, characterized in that two contact surfaces (17) are provided on the printed circuit board (5) for the electrical contacting by the holding parts (8, 8'), and that preferably the printed circuit board (5) has a base area, the size of which substantially corresponds to the sum of the surfaces of the lamp (6) and the contact surfaces (17), in such a way that the base area of the printed circuit board (5) is only insignificantly larger than that of the lamp (6).
  6. A lighting unit according to any one of Claims 1 to 5, characterized in that the holding part (8, 8') is designed as a stamping and/or bending element.
  7. A lighting unit according to any one of Claims 1 to 6, characterized in that the printed circuit board (5) is arranged substantially perpendicular to the longitudinal axis (15) of the holding part (8, 8'), in particular to the rod element (18).
  8. A lighting unit according to any one of Claims 1 to 7, characterized in that the printed circuit board (5) is arranged tilted towards the longitudinal axis (15) of the holding part (8, 8'), in particular, towards the rod element (18).
  9. A lighting unit according to any one of Claims 1 to 8, characterized in that the holding part (8, 8') consists of metal, and that preferably the socket (3) and/or the lid (4) and/or the protective cap (13) consist of plastic, in particular of a thermoplastic synthetic material.
EP12723112.4A 2011-05-19 2012-05-16 Lighting unit for a household appliance Active EP2710296B1 (en)

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DE102011102078 2011-05-19
PCT/EP2012/002114 WO2012156088A1 (en) 2011-05-19 2012-05-16 Lighting unit for a household appliance

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US (1) US9903582B2 (en)
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CN (1) CN103842721B (en)
DE (1) DE102012009264A1 (en)
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CN103842721A (en) 2014-06-04
DE102012009264A1 (en) 2012-11-22
US9903582B2 (en) 2018-02-27
EP2710296A1 (en) 2014-03-26
PL2710296T3 (en) 2017-07-31
CN103842721B (en) 2018-06-26
WO2012156088A1 (en) 2012-11-22
US20140140073A1 (en) 2014-05-22

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