EP2597365B1 - Module d'éclairage pour appareil ménager - Google Patents

Module d'éclairage pour appareil ménager Download PDF

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Publication number
EP2597365B1
EP2597365B1 EP12192320.5A EP12192320A EP2597365B1 EP 2597365 B1 EP2597365 B1 EP 2597365B1 EP 12192320 A EP12192320 A EP 12192320A EP 2597365 B1 EP2597365 B1 EP 2597365B1
Authority
EP
European Patent Office
Prior art keywords
housing
frame
lighting module
light
connection
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
EP12192320.5A
Other languages
German (de)
English (en)
Other versions
EP2597365A2 (fr
EP2597365A3 (fr
Inventor
Dominik Abele
Martin Graw
Holger Swat
Maja Wehrle
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2597365A2 publication Critical patent/EP2597365A2/fr
Publication of EP2597365A3 publication Critical patent/EP2597365A3/fr
Application granted granted Critical
Publication of EP2597365B1 publication Critical patent/EP2597365B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/305—Lighting for domestic or personal use for refrigerators
    • 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
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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 module for a household appliance.
  • US 2009/213595 A1 describes a luminous element and an LED arrangement.
  • a front cover is connected to the LED assembly.
  • the LED arrangement in turn is connected to a socket to which a thermally conductive housing is connected.
  • the thermally conductive housing serves as an ornament, but can also be used as a heat sink.
  • the socket is connected to the housing via fastening devices through which screws are guided.
  • the light-emitting diode system has at least one light-emitting diode component in which a light-emitting diode chip is arranged in a light-emitting diode housing on a heat sink, which is thermally connectable to the rear side of the light-emitting diode housing.
  • a support plate having a front and a back and a hole for receiving the light emitting diode component is provided and the light emitting diode component projects from the back of the Victoriaplatter forth in the hole and on the back of the support plate, an electrically insulating thermal connection layer is applied, which thermally with the heat sink is conductively connected.
  • a holding frame is provided, which has fastening elements projecting beyond the thermal connection layer, for example snap-in hooks, with which the carrier plate including the light-emitting diode component and the thermal connection layer protrude a heat sink can be attached.
  • the fasteners which represent snap hooks, are inserted through openings in the heat sink.
  • CN201836825U describes a screw connection in an LED device.
  • an LED lens module and a PCB is used.
  • the device has a cooler.
  • the PCB is attached to the cooler via screws.
  • the LED lens module is connected to the radiator.
  • WO 2006 12 23 92 A1 discloses a lighting module for a vault.
  • the module includes a substrate having one or more light emitting elements and an external housing sealed to the substrate.
  • the housing has optical elements which interact with the light elements.
  • the module may further comprise a metal element which serves as a heat sink for the substrate.
  • the LED lamp assembly includes a radiator, a light module, a socket, a drive circuit unit, an electrically conductive terminal, a lid, and a lens.
  • the radiator is made of a thermally conductive metal material, wherein at the front end of the radiator, a receiving part is arranged, wherein at the Umfaogsrand of the radiator, a plurality of fins extending outwardly, which provide heat dissipation.
  • the connection between the cover and the socket are connected together so that the radiator is held between them.
  • fasteners of the lid are passed through the radiator and engage with fastening means of the socket.
  • the luminaire module unit has a base element designed as a circuit carrier, in particular as a printed circuit board.
  • the base element serves to receive one or more light sources, in particular one or more LEDs, whose optically detectable region is arranged on the upper side of the base element.
  • the module unit may have a base element which is designed as a cooling plate in order to be able to deliver the heat radiated from the electrical components on the circuit carrier to the environment.
  • the object of the present invention is therefore to provide a lighting module for a household appliance, whose manufacture and assembly is simplified and in which nevertheless the alignment of the individual items to each other can be ensured in a simple manner.
  • the invention is based on the finding that this object can be achieved by using a housing as a supporting element for the individual parts of the lighting module.
  • the object is therefore achieved by a lighting module for a household appliance, wherein the lighting module is a lighting module having features of claim 1
  • a household appliance in the context of the present invention, in particular a kitchen household appliance is understood in which at least part of the environment or the interior of the kitchen household appliance is to be functionally illuminated.
  • the household appliance can thus represent, for example, an extractor hood, a hearth furnace or a refrigerator.
  • lighting module is understood in the context of the present invention, a preassembled or preassembled unit that can be attached to a household appliance, in particular to a panel of a household appliance.
  • the lighting module can be at least partially introduced into the panel.
  • the cladding may represent a cladding, which is part of the household appliance, such as the cover of a viewing hood.
  • the panel represents, for example, a wall unit of a kitchen, in which the household appliance is at least partially included.
  • the illumination module according to the invention comprises at least one optical unit, at least one cooling element and at least one frame.
  • the optical unit comprises a light source.
  • the light source can be integrated in the optical unit or connected to it for the introduction of light into the optical unit.
  • the optical unit may preferably comprise at least one light-guiding element, for example a lens element.
  • a Disc be provided as part of the optical unit or connected thereto. Such a disk can on the one hand change the optical properties of the light beam emitted by the light source and / or a light guide element. On the other hand, the disc can serve as a protective screen against contamination and mechanical or chemical damage to the light source and / or the light-guiding element.
  • the optical unit can be introduced as a preassembled unit in the lighting module. Preferably, however, at least individual parts of the optical unit are individually inserted into the illumination module and only yield a unit in the mounted state of the illumination module.
  • the at least one light source can represent, for example, a light-emitting diode (Light Emitting Diode LED).
  • a plurality, that is to say at least two, light sources are provided in the illumination module. These can cooperate with a common light-guiding element or with a plurality of light-guiding elements assigned in particular to the individual light sources.
  • the at least one cooling element which is provided in the lighting module, according to the invention is a heat sink with cooling fins.
  • the cooling element is used in particular for cooling the at least one light source of the lighting module. If more than one light source is provided in the lighting module, several individual cooling elements may be provided. Preferably, however, only a single cooling element is provided when providing a plurality of light sources. As a result, the overall structure of the lighting module is simplified and the heat transfer from the light source or sources can be improved.
  • the cooling element serves to dissipate heat, which is generated at the at least one light source, to the environment, in particular within the domestic appliance, or to reduce the temperature of the light source (s). For this reason, the cooling element or elements are preferably arranged in the immediate vicinity of the light source (s) and are preferably in contact therewith.
  • the lighting module comprises at least one frame.
  • a frame in this case a component is referred to, which has at least one outlet opening for light.
  • the frame may be a metal frame, in particular a stainless steel frame.
  • the frame according to the invention for example of a plastic, preferably a non-translucent plastic to produce.
  • the frame serves at least partially for holding at least a part of the optical unit, in particular a light-guiding element.
  • the frame can serve as a veneer of gaps that arise between the other components of the lighting module and the household appliance. At the same time the frame also serves as a stop when mounting the lighting module to the household appliance.
  • the frame is used in a mounting of the lighting module from the bottom of the appliance as an abutment to one or more spring elements or locking devices, by means of which the lighting module in the household appliance are pulled upwards.
  • the frame preferably has a base plate in which the outlet opening for light is provided.
  • the frame comprises means which extend from the base plate and preferably protrude in the mounted state in the interior of the lighting module. These means may be tabs and / or arms.
  • the frame comprises a directed from a base plate into the interior of the lighting module flange, which preferably completely surrounds the outlet opening.
  • the lighting module according to the invention is characterized in that the lighting module further comprises at least one housing for receiving at least a part of the optical unit.
  • a housing is referred to as a component which at least partially covers the optical unit at the edges thereof and optionally additionally upwards.
  • the housing is preferably made of a nontransparent material and may be, for example, a plastic part.
  • the use of plastic as a material for the housing has a number of advantages. On the one hand, this material can be easily processed and, in particular, complex shapes can be produced in a simple way. In addition, the plastic can be chosen so that this indeed has sufficient stability, and yet has a certain flexibility.
  • the housing may be made for example by injection molding. Furthermore, it is advantageous that a plastic housing is usually not conductive and thus, for example, electrical components in the Housing can be accommodated without the risk of leakage current and / or a short circuit.
  • the housing used in the invention serves as the core of the lighting module.
  • the housing is designed such that, on the one hand, the frame of the lighting module and, on the other hand, the heat sink of the lighting module can be fixed. Therefore, the housing has at least one engagement means for engagement with at least a part of the cooling element and at least one connection means for connection to at least a part of the frame.
  • a means for engagement with at least a part of the cooling element, in particular a means is designated by which a clip connection, a latching connection and / or VerschränkungsISS can be created.
  • a connection is referred to, which is generated by the engagement means by deformation, in particular bending, is aligned relative to the cooling element, that the means is entangled with at least a portion of the cooling element.
  • the engagement means is arranged on the housing so that it can engage in a gap of the cooling element.
  • connection means for connection to at least a part of the frame in particular a means is designated by which a clip connection, a latching connection and / or VerschränkungsENS can be created.
  • a connection is referred to, which is generated by a provided on the frame fastener by deformation, in particular bending, is aligned relative to the housing, that the fastener is interlocked with at least a portion of the housing.
  • the connecting means on the housing an opening, a recess, a surface or an edge is, in which the or on which the fastening element of the frame can engage.
  • On the housing are preferably more, that is, in particular at least two engagement means and a plurality, that is, in particular at least two connecting means provided.
  • the housing according to the invention is designed to intervene both with the frame of the lighting module and with the cooling element of the optical unit, these two components can be connected via the housing at least with each other. Since the connection with the housing is realized in each case by the cooperation of means on the housing and corresponding means or elements on the frame and the cooling element, both the construction of the lighting module and the assembly of the lighting module is simple. In particular, the number of individual parts is reduced in particular in comparison to a connection of the components of a lighting module by means of screws. In addition, the provision of engagement means and connection means on the housing also offers some advantages over components bonded together. In particular, the connection between the individual components in the lighting module according to the invention is solvable.
  • the tolerance chain is limited to the respective two joining parts, that is to say the frame and the housing or the cooling element and the housing.
  • the engagement between the housing and the heat sink and the connection between the housing and the frame is a mechanical connection, in particular a positive and / or non-positive connection.
  • a mechanical connection in particular a positive and / or non-positive connection.
  • This mechanical connection may be, for example, a latching connection or a clip connection. In these types of connection, a part is elastically deformed and taken after discharge in a corresponding receptacle or is applied to a corresponding surface.
  • connection by plastic deformation.
  • an element can be bent so that they are in a corresponding Recording is taken or applied to a corresponding surface.
  • the hold of these two types of connections is sufficient, so that further fixation, for example by adhesive is not required. This simplifies the assembly of the lighting module considerably.
  • the lighting module is constructed so that at least one fastening element is provided on the frame, which engage in a recess and / or can be brought to rest on a surface of the housing.
  • At least one engagement means is preferably provided on the housing, which can engage or engage in a recess and / or be brought into contact with a surface of the cooling element.
  • the fasteners on the frame and the engagement means on the housing are preferably directed inwardly.
  • the at least one engagement means on the housing is a latching arm with a latching lug for engagement between two cooling fins of the cooling element.
  • the present invention in which thus the movable part of the latching connection is provided on the housing, is advantageous because the material of the housing so it can be chosen that the flexibility necessary for the elastic deformation can be provided.
  • the cooling element is, however, usually made of a rigid material, in particular a metal block, a plastic block or a ceramic block. Another advantage of the invention is that a change of the cooling element is not required. For better heat dissipation several cooling surfaces are provided on the cooling element in the rule, which are present in particular in rib shape.
  • the structure of the lighting module is therefore simple.
  • more than two ribs are usually provided on a cooling element, so that a plurality of engagement means can be used. This improves the grip between the cooling element and the housing.
  • latching lugs which engage between these cooling fins can act on the upper side of the base surface of the cooling element and thus press it downwards. The cooling element can thus be pressed in the direction in which the outlet opening for light is provided on the lighting module.
  • Cooling element Between the Cooling element and the outlet opening are also other components of the lighting module, in particular the light source and optionally light-guiding elements provided.
  • the light source As an abutment for this downward force is preferably provided in the housing at least one support for at least a portion of the edge of the cooling element or arranged on the underside of the cooling element board.
  • Directional indications such as top, bottom, vertical and horizontal, unless otherwise indicated, refer to the directions on an assembled lighting module mounted so that an outlet opening for emitting the light is horizontal.
  • the connecting means on the housing which is provided with a fastening element of the frame for connecting the frame to the housing, may be a surface on the housing, for example a shoulder, an edge, a web or a wall. Additionally or alternatively, the connecting means may also constitute or comprise a recess or opening on the housing. On a surface which serves as a connecting means, the fastening element of the frame can rest. As a result, the structure of the housing is simplified.
  • the connecting means on the housing for example, an intermediate wall and / or an edge of the housing for cooperation with a fastening element of the frame.
  • a partition wall here is a wall which extends at least partially in the horizontal and to the bottom and the Is spaced above the top of the housing.
  • the top of the side walls of the housing can be used as an edge for cooperation with a fastening element.
  • An advantage of this embodiment is that the connection means in the housing can also be used for other purposes.
  • an intermediate wall can serve for aligning and fixing one or more light-guiding elements. This further simplifies the construction of the lighting module.
  • the at least one connecting means on the housing comprises at least one recess in the housing, which extends over at least part of the height of the housing. Through this recess, a fastening means or a fastening arm can be guided with a fastening element of the frame provided thereon.
  • the connecting means on the housing for connection to the frame comprises at least one oblique edge. This is provided, for example, on the edge or wall, with which the fastening element of the frame stiffened. As a result, a tolerance compensation in the connection between the frame and housing can be created.
  • the frame for connection to the connecting means of the housing has at least one fastening element, which preferably represents a latching projection or a bending flange.
  • the fastening element is preferably arranged offset to a base plate of the frame upwardly offset on the frame.
  • the attachment point to the base plate which is usually the underside of the lighting module, is arranged offset upwards, further components of the lighting module, in particular a light guide, can be clamped between the attachment point and the top of the base plate of the frame.
  • the provision of a fastening element on the frame has the advantage that this can be formed in one piece on the frame in a simple manner.
  • the frame is usually made of sheet metal.
  • the frame may be a stainless steel frame.
  • edges By edges, bending and punching can thus be easily generated locking projections or bending flanges are provided, which can be brought by bending out with the connecting means of the housing in contact.
  • the fastening elements are preferably provided on an upwardly bent flange of the frame, which surrounds a light outlet opening. This may cause misalignment points through transparent housings and / or not drawn inwards Frame, in known lighting modules, gaps between the optical unit and the frame, in particular stainless steel frame arise, can occur, can be prevented.
  • the optical unit comprises at least one light guide element and the light guide element is clamped by the connection between the frame and the housing between the frame and the housing.
  • a light-guiding element is an optical element, by means of which light from the light source can for example be purposefully amplified, bundled, scattered, refracted and / or directed.
  • the light-guiding element can also be referred to as a lens element.
  • the light-guiding element comprises at least one Lichtleitkorpus, which may for example have a dome shape.
  • the at least one Lichtleitkorpus is preferably arranged on a base or integrated with this.
  • the base may have the shape of a plate or disc and serves essentially to position the at least one light guide body.
  • the base preferably consists of the same material as the at least one Lichtleitkorpus.
  • the part of the light-guiding element which is clamped preferably represents the edge of the light-guiding element. In this region, preferably only the plate-shaped or disk-shaped base of the light-guiding element is present. This area can thus be easily clamped between the top of the frame, in particular the top of a flange on the frame and a bottom of the housing. The required clamping force is in this case applied via the fastening element to the frame and thereby through the housing.
  • an inclination of the base and / or the Lichtleitkorpus can be fixed.
  • the frame and / or the housing have different heights over the circumference.
  • the housing has at least one intermediate wall for applying at least a part of an upper side of the optical unit, in particular of the light-guiding element.
  • the intermediate wall is preferably provided horizontally in the housing and is spaced from the underside of the housing.
  • This distance is preferably less than or equal to the height of the light-guiding element.
  • at least one opening is preferably provided in the intermediate wall.
  • the shape of the opening corresponds to the shape of the at least one light-guiding body of the light-guiding element in the upper region. In a dome-shaped Lichtleitkorpus the opening is therefore preferably designed circular.
  • the dimension of the opening is preferably smaller than the lowest dimension of the light-guiding body of the light-guiding element. This can be applied to a Lichtleitgroper and thus to the light guide through the intermediate wall of the housing from above a force on the light guide.
  • a downwardly directed web can be provided on the housing, which rests in particular in the edge region of the light-guiding element, that is to say in the edge region of the base on the upper side of the base and thereby also presses the light-guiding element downwards.
  • an intermediate wall thus has a number of advantages.
  • the intermediate wall can serve as a connection means for the engagement of a fastening means of the frame.
  • the intermediate wall can serve as a holder of the light-guiding element.
  • the housing has at least one support for laying on at least a part of the optical unit, in particular the underside of a circuit board of the optical unit.
  • the support can be formed by an edge or a shoulder in the edge region of the housing.
  • At least two engagement means are provided on the housing and the engagement means are arranged asymmetrically with respect to at least one mirror axis of the housing.
  • the mirror axes are along the length and width of the housing.
  • the mirror axis is along the diameter.
  • the distance between two engagement means provided on a longitudinal side of the housing may be larger than the distance between two engagement means arranged on the opposite longitudinal side of the housing.
  • cooling element is rotated relative to the housing.
  • the connecting means by means of which the frame is attached to the housing, are provided asymmetrically to the housing to one of the axes of symmetry of the housing.
  • an anti-rotation between the housing and the frame can be created. This rotation is important both during assembly of the lighting module as well as during assembly of the lighting module in the household appliance.
  • staggered connecting means and the fastening means are arranged offset correspondingly on the frame in order to engage with the connecting means can.
  • This staggered arrangement of the fastening means can be used to advantage further.
  • the fastening means are preferably provided on the frame so that they can engage in recesses or recesses of a light-guiding element which is held on the frame.
  • the light guide can thus be installed only in one position. This is of particular importance since, for example, the direction of emission of the illumination module as a whole can also be predetermined by the light-guiding element.
  • the engagement means are arranged offset to the connection means on the housing.
  • This embodiment is advantageous because it allows the structure of the housing can be simplified.
  • the wall thickness of a frame body of the housing can be kept smaller than in an embodiment in which both engagement means and connecting means must be provided at a single position on the circumference of the frame body of the housing.
  • the lighting module 1 comprises a frame 10, a housing 11 and a cooling element 12.
  • the frame 10 forms the lower part of the lighting module 1.
  • the cooling element 12 forms the upper part of the lighting module 1.
  • the cooling element 12, as it turns out FIG. 1 gives in one embodiment a comb shape.
  • a number of cooling fins 120 extend upwards from a lower base area 121 in this embodiment.
  • the cooling fins 120 are arranged at a distance from one another such that there are interspaces between the cooling fins 120 in which the base area 121 is accessible from above.
  • the base area 121 of the cooling element 12 is rectangular in the illustrated embodiment.
  • a circuit board 16 is arranged, which is designed as a PCB (printed circuit board).
  • the underside light sources 15 On the board 16 are on the underside light sources 15 arranged in the form of LEDs. In the illustrated embodiment, six light sources 15 are provided distributed over the length of the board 16. To the circuit board 16, a line 17 is connected, via which the circuit board 16 and in particular the light sources 15 can be connected to a power supply.
  • FIG. 2 the frame 10 of the lighting module 1 is shown with light guide 13 mounted thereon.
  • the frame 10 has a base plate 100 in which an outlet opening 1000 is provided.
  • the frame 10 and the outlet opening 1000 each have a rectangular shape in the illustrated embodiment.
  • a flange 102 is bent upward from the base plate 100.
  • Two attachment arms 101 are provided in the illustrated embodiment over the longitudinal sides of the outlet opening 1000.
  • the attachment arms 101 extend upwardly from the upper edge of the flange 102.
  • the fastening arms 101 on one of the longitudinal sides of the outlet opening 1000 are offset in the longitudinal direction from the fastening arms 101 of the opposite longitudinal side.
  • a further fastening arm 101 is provided in the illustrated embodiment at the longitudinal ends of the outlet opening 1000.
  • a fastener 1010 is provided at each of the attachment arms 101.
  • the fastener 1010 is a tab which is stamped out of the material of the mounting arm 101 and can serve as a latching tab.
  • the light guide 13 used in the frame 10 has a base 130 from which six (in the FIG. 2 only four visible) light guide body in the form of domes 131 extend upward.
  • the light guide 13 may be made of glass or a transparent plastic, for example.
  • the length and width of the base 130 of the light-guiding element 13 are greater than the corresponding dimensions of the outlet opening 1000 of the frame.
  • the domes 131 of the light-guiding element 13 are distributed over the length of the light-guiding element 13.
  • a thickening 132 is provided which extends from the surface of the base 130 upwards and downwards in the form of webs.
  • FIG. 3 the next assembly state of the lighting module 1 is shown.
  • the housing 11 is placed on the introduced into the frame 10 light guide.
  • the housing 11 has in the illustrated embodiment substantially a box shape, which comprises a frame body which forms the side walls of the housing 11.
  • engagement means in the form of latching arms 110 extend with latching lugs provided thereupon.
  • the locking lugs are directed to the locking arms 110 inwards.
  • the housing 11 has end walls whose height is higher than the height of the side walls.
  • a shoulder is introduced from above, through which a support 111 is provided.
  • an intermediate wall 112 is provided, which extends horizontally and thus covers the interior of the frame body of the housing 11.
  • openings 1120 are distributed over the length of the housing introduced, which represent circular openings in the illustrated embodiment.
  • the positions of the openings 1120 correspond to the positions of the domes 131 of the light guide element 13 received in the frame 10.
  • the size of the openings 1120 is greater than the uppermost dimension of the light guide body, in particular the dome 131, but smaller than the dimension of the light guide, in particular the dome 131, at the point where they pass into the base 130.
  • the housing 11 further recesses 114 are provided, which extend over the height of the housing 11 and extend at least partially in the frame body of the housing 11. Through the recesses 114, the fastening arms 101 of the frame 10 of the lighting module 1 can be guided from bottom to top.
  • the fastening elements 1010 on the fastening arms 101 of the frame are bending tabs which are bent by bending with respect to the fastening arm 101 onto the upper side of the intermediate wall 112 of the housing 11 and thus bring about a connection of the frame 10 to the housing 11.
  • the recesses 114 are arranged offset to the Rastamen 110 of the housing 11 over the longitudinal side of the housing 11.
  • FIG. 4 results, in which the assembled lighting module 1 is shown, the locking lugs of the locking arms 110 engage the top of the base 121 of the cooling element 12 between the cooling fins 120 a.
  • the cooling element 12 is inserted from above into the housing 11 and is held to the sides of the frame body of the housing 11.
  • the latching arms 110 are offset on the opposite longitudinal sides of the housing 11 so that the latching lugs engage in adjacent intermediate spaces between cooling fins 120 of the cooling element 12.
  • FIG. 5 shows an embodiment of the lighting module 1 in the assembled state, in which it can be mounted in a household appliance.
  • this embodiment in deviation from the embodiment according to FIG. 3 provided as fastening elements 1010 of the frame bending tabs which engage in the bent state on the upper side of the side walls of the housing 11 instead of on the upper side of the intermediate wall 112.
  • 11 bulges are provided on the side walls of the housing, which extend over the height of the side of the housing 11 and in which the recesses 114 extend, through which the fastening arms 101 of the frame can be performed.
  • the further embodiment of the embodiment according to FIG. 5 corresponds to the embodiments according to FIGS. 1 to 4 , In FIG.
  • a spring 116 can be seen, which is provided in each case at the outer longitudinal ends of the housing 11.
  • the lighting module 1 can be secured in a corresponding opening of the household appliance.
  • 11 projections 117 are shown on the outside of the housing, which also serve to fix and position the lighting module 1 in the household appliance.
  • the springs 116 and projections 117 may also be provided on the previously described embodiments.
  • a groove 115 is provided, which extends in the horizontal direction.
  • FIG. 6 is a schematic, perspective bottom view of an embodiment of the lighting module 1 is shown.
  • a disc 14 is placed in the outlet opening 1000 of the frame, which covers the underside of the light-guiding element 13 and thereby protects.
  • FIG. 7 is shown in a schematic sectional view of the structure of the lighting module 1.
  • the cooling element 12 which is connected to the circuit board 16, introduced from above into the housing 11 and surrounded by this in the lower region of the cooling element 12.
  • the circuit board 16 may be glued, for example, on the underside of the base 121 of the cooling element 12.
  • light sources 15 are provided, which emit light substantially down.
  • the edge of the board 16 is held on a support 111 of the housing 11, which is formed by a shoulder on the inside of the frame body of the housing 11.
  • the locking lug of the latching arm 110 of the housing 11 engages on the upper side of the base 121 of the cooling element 12.
  • the cooling element 12 and the board 16 between the support 111 and the latching lug of the latching arm 110 are clamped and thereby held in position.
  • a support (not shown) is provided, on which at least a part of the underside of the cooling element 12 is held.
  • the width and the length of the board 16 may be smaller than the width and the length of the cooling element 12, so that the board 16 may still be attached to the underside of the cooling element 12 in this embodiment.
  • a horizontally extending intermediate wall 112 is provided in the interior of the housing 11, which has openings 1120. Through the opening 1120, the upper part of the dome 131 of a light-guiding element 13 projects upwards. The upper end of the mandrel 131 and thus the upper end of the light-guiding element 13 abuts against the light source 15. Thus, light from the light source 15 can be introduced into the light guide 13.
  • the intermediate wall 112 exerts a downward force on the dome 131 of the light-guiding element 13.
  • In the light guide 13 closes below of the dome or 131 to the base 130 at. This extends laterally to the dome 131 and at the edges of the base 130 are provided thickenings 132 which extend up and down.
  • a downwardly directed web of the housing 11 in the vicinity of the thickening 132 engages on the upper side of the base 130 of the light-guiding element 13.
  • the light guide 13 is pressed by the housing 11 downward.
  • the light-guiding element 13 is held by the flange 102 of the frame 10 at the edge and in particular at the thickening 132 in the illustrated embodiment.
  • the housing 11 is also, as is apparent from the above figures, connected to the frame 10 of the lighting module 1 so that exerted by the frame 10, in particular by the fasteners 1010 of the frame 10, a downward force on the housing 11. The light-guiding element 13 is thus clamped between the housing 11 and the frame 10.
  • a disc 14 is provided on the underside of the light-guiding element 13. This can be glued to the underside of the light-guiding element 13 or connected in some other way to the light-guiding element 13. The height of the disc 14 substantially fills the area between the underside of the base plate 100 of the frame 10 and the underside of the base 130 of the light-guiding element 13.
  • FIG. 8 a further embodiment of the lighting module 1 is shown, in which the frame 10 is connected via the intermediate wall 112 with the housing 11.
  • the mounting arm 101 of the frame 10, which extends upwardly from the flange 102, is guided by the recess 114 of the housing 11.
  • the upper end of the mounting arm 101 serves as a fastener 1010 by this end is bent until it rests against the top of the intermediate wall 112. Since the light guide 13 is also held in the edge region, in particular in the region of the thickening 132 of the housing 11, the light guide 13 is clamped by the attachment by means of the fastener 1010 between the housing 11 and the frame 10, in particular the top of the flange 102.
  • FIG. 9 is a schematic diagram of the connection between the housing 11 and frame 10 is shown.
  • tolerances of the individual components of the lighting module 1 can be compensated.
  • FIG. 10 showing a further schematic representation of an embodiment of the connection between the housing 11 and the frame 10, it is shown that in the region in which the fastening arm 101 of the frame 10 engages through the light-guiding element 13 and possibly through the housing 11, on the housing 11 and the light guide 13 each an insertion bevel 1140, 133 may be provided. On the housing 11, such an insertion bevel 1140 is preferably provided on the recess 114. As a result, the assembly of the lighting module 1 according to the invention is further simplified. In addition, via the insertion bevels 1140, 133, a centering of the assembled parts, in particular of the housing 11, the light-guiding element 13 and the frame 10 against each other.
  • the present invention is not limited to the illustrated embodiments.
  • the structure of the housing, the frame, the cooling element and the light-guiding element may differ from the construction shown. It is only important that the housing serves as a holder for the light guide, preferably by clamping between the frame and housing, and as a holder for the cooling element and preferably also for holding the light sources.
  • the present invention describes a further development, in particular of LED modules, in which a housing as a supporting element for a frame of the lighting module, which can be in particular a stainless steel frame, a heat sink, which is preferably connected to a PCB with at least one light source, and for at least one light guiding element, which is also referred to as a lens element is created.
  • the attachment of said items is preferably carried out by means of clips, latching or Verschränkungseducationen without additional adhesive and / or joining substances.
  • the housing of the lighting module used according to the invention is preferably designed so that the heat sink (including the PCB (board with light source)) can be attached via mechanical clips, without further adhesive and joining substances.
  • the frame in particular the stainless steel frame is also attached via clips, latching or Verschränkungsmechanismen. Again, it is preferable to dispense with the use of additional adhesive and joining substances.
  • the lens element is secured over the frame to the lighting module, preferably by clamping between the frame and the housing.
  • the mechanical fasteners are according to the invention, for example, via clips connections that are exactly adapted to the respective counterpart.
  • the geometries of the respective joining parts additionally ensure centering and tolerance compensation of the components or individual parts relative to each other, wherein the lens element is fastened and centered over the frame.
  • inwardly drawn frame attached to the one lens element to another are misaligned at the transition from the housing of the lighting module to the horizontal part of the frame, which is also referred to as the base plate, avoided.
  • the present invention achieves a number of advantages.
  • the proportionate labor costs in the manufacturing process at the supplier are reduced by reducing the assembly time. Furthermore, a constructive consideration of the tolerance deviation of individual parts and their compensation.
  • the housing By using the housing as a supporting element, the tolerance chain is reduced to the respective two parts to be joined.
  • an LED module without misalignment is created by the separation of lens or lens element (transparent) and housing (opaque), in conjunction with drawn inward frame.
  • the use of mechanical clips, latching and / or VerschränkungsISTen instead of adhesive joints, the error influence options are reduced by false pretreatment processes to zero.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (9)

  1. Module d'éclairage pour appareil ménager, comprenant au moins une unité optique (13, 14, 15, 16) avec au moins une source lumineuse (15), au moins un élément de refroidissement (12) pour refroidir au moins une partie de l'unité optique (13, 14, 15, 16) et au moins un châssis (10) pour maintenir au moins une partie de l'unité optique (13, 14, 15, 16), le module d'éclairage (1) comportant au moins un boîtier (11) destiné à recevoir au moins une partie de l'unité optique (13, 14, 15, 16), le boîtier (11) comportant au moins un moyen de liaison (112, 113) pour établir une liaison avec au moins une partie du châssis (10) et le boîtier (11) comportant au moins un moyen d'engagement (110) destiné à venir en prise avec au moins une partie de l'élément de refroidissement (12), caractérisé en ce que l'au moins un moyen d'engagement (110) du boîtier (11) consiste en un bras d'encliquetage (110) avec un ergot d'encliquetage destiné à venir en prise entre deux ailettes de refroidissement (120) de l'élément de refroidissement (12).
  2. Module d'éclairage selon la revendication 1, caractérisé en ce que l'engagement entre le boîtier (11) et le corps de refroidissement (12) ainsi que la liaison entre le boîtier (11) et le châssis (10) est une liaison mécanique, et plus particulièrement une liaison par complémentarité de forme et/ou par adhérence.
  3. Module d'éclairage selon l'une des revendications 1 ou 2, caractérisé en ce que le moyen de liaison du boîtier (11) consiste en une paroi intermédiaire (112) et/ou un bord (113) du boîtier (11) destinés à coopérer avec un élément de fixation (1010) du châssis (10).
  4. Module d'éclairage selon l'une des revendications 1 à 3, caractérisé en ce que le châssis (10), pour établir une liaison avec le moyen de liaison (112, 113) du boîtier (11), comporte au moins un élément de fixation qui consiste de préférence en une saillie d'encliquetage ou en une bride souple.
  5. Module d'éclairage selon l'une des revendications 1 à 4, caractérisé en ce que l'unité optique (13, 14, 15, 16) comprend au moins un élément de guidage de lumière (13) et en ce que l'élément de guidage de lumière (13) est serré par la liaison entre le châssis (10) et le boîtier (11) entre le châssis (10) et le boîtier (11).
  6. Module d'éclairage selon l'une des revendications 1 à 5, caractérisé en ce que le boîtier (11) comporte au moins une paroi intermédiaire (112) pour appliquer au moins une partie d'une partie supérieure de l'unité optique (13, 14, 15, 16), et plus particulièrement de l'élément de guidage de lumière (13).
  7. Module d'éclairage selon l'une des revendications 1 à 6, caractérisé en ce que le boîtier (11) comporte au moins un support (111) pour appliquer au moins une partie de l'unité optique (13, 14, 15, 16), et plus particulièrement la partie inférieure d'un circuit imprimé (16) de l'unité optique (13, 14, 15, 16).
  8. Module d'éclairage selon l'une des revendications 1 à 7, caractérisé en ce que sont prévus, sur le boîtier (11) au moins deux moyens d'engagement (110) et les moyens d'engagement (110) sont agencés asymétriquement par rapport à au moins un axe réfléchi du boîtier (11).
  9. Module d'éclairage selon l'une des revendications 1 à 8, caractérisé en ce que les moyens d'engagement (110) sont agencés de manière décalée par rapport aux moyens de liaison (112, 113) du boîtier (11).
EP12192320.5A 2011-11-23 2012-11-13 Module d'éclairage pour appareil ménager Active EP2597365B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011086968A DE102011086968A1 (de) 2011-11-23 2011-11-23 Beleuchtungsmodul für ein Hauhaltsgerät

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EP2597365A2 EP2597365A2 (fr) 2013-05-29
EP2597365A3 EP2597365A3 (fr) 2017-07-05
EP2597365B1 true EP2597365B1 (fr) 2019-06-12

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DE (1) DE102011086968A1 (fr)

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EP4368896A1 (fr) * 2022-11-09 2024-05-15 BJB GmbH & Co. KG Lampe pour appareil de cuisson

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EP3129715B1 (fr) * 2014-04-10 2023-05-10 BSH Hausgeräte GmbH Module d'éclairage d'un appareil ménager et appareil ménager
DE202014106099U1 (de) * 2014-12-17 2016-03-18 Zumtobel Lighting Gmbh Leuchtmittelträger für eine Lichtbandleuchte
DE102015122311A1 (de) 2015-12-18 2017-06-22 BSH Hausgeräte GmbH Beleuchtungsmodul
DE102016122388A1 (de) * 2016-11-21 2018-05-24 Vossloh-Schwabe Italia S.P.A. Leuchtelement und Anordnung mit einem Leuchtelement
DE102019104038B3 (de) * 2019-02-18 2020-08-13 Eckart Neuhaus Kühlkörper mit gesteckten Flächenelementen für LED Leuchten
FR3092901B1 (fr) * 2019-02-20 2022-07-22 Rouge Eng Designs Dissipateur thermique pour système d’éclairage
DE102019117768A1 (de) * 2019-07-02 2021-01-07 Miele & Cie. Kg Bodendüse und Staubsauger
FR3122372B1 (fr) * 2021-04-30 2023-07-21 Saint Gobain Ensemble pour vehicule comprenant un module a diode electroluminescente, plaque-support et procede d’assemblage d’un tel ensemble

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DE102006048230B4 (de) * 2006-10-11 2012-11-08 Osram Ag Leuchtdiodensystem, Verfahren zur Herstellung eines solchen und Hinterleuchtungseinrichtung
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CN201836825U (zh) * 2010-11-14 2011-05-18 江西省晶和照明有限公司 Led透镜模组的螺钉装配结构以及led路灯

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Publication number Publication date
EP2597365A2 (fr) 2013-05-29
EP2597365A3 (fr) 2017-07-05
DE102011086968A1 (de) 2013-05-23

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