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WO2006018214A1 - Dispositif de visualisation pour appareil electrique et procede de production d'un tel dispositif de visualisation - Google Patents

Dispositif de visualisation pour appareil electrique et procede de production d'un tel dispositif de visualisation Download PDF

Info

Publication number
WO2006018214A1
WO2006018214A1 PCT/EP2005/008715 EP2005008715W WO2006018214A1 WO 2006018214 A1 WO2006018214 A1 WO 2006018214A1 EP 2005008715 W EP2005008715 W EP 2005008715W WO 2006018214 A1 WO2006018214 A1 WO 2006018214A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
housing
recess
display device
led
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.)
Ceased
Application number
PCT/EP2005/008715
Other languages
German (de)
English (en)
Inventor
Dr. Ralf Dorwarth
Andreas Kleinhans
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of WO2006018214A1 publication Critical patent/WO2006018214A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00

Definitions

  • Display device for an electrical appliance and method for producing such a display device
  • the invention relates to a display device according to the preamble of claim 1 and a method for producing a excellent ⁇ unit for such a display device.
  • illuminated displays are arranged under covers, for example in the case of a hob under a glass-ceramic cooking plate.
  • a symbol represented by these indicator lights can be recognized through the cover and information or the like. Show.
  • a lighting element in the form of an LED.
  • a display symbol mask is placed over the LED or attached thereto.
  • the mask covers except for recesses, which correspond to the shape of the symbol to be displayed, the light source.
  • recesses are transilluminated and there is a light phenomenon, which corresponds to the desired symbol.
  • it can be avoided to arrange a plurality of substantially point-shaped light sources or LED of the contour of the symbol according to the representation of a symbol.
  • the additional step is that the mask must be fastened to the LED.
  • the object of the invention is to provide an indicating device as well as a method for producing the same with which the disadvantages of the prior art can be avoided and in particular the additional assembly step can be eliminated.
  • the display device has a luminous display unit with housing.
  • This display unit is advantageous so to speak only provided with a single light unit or can not. different, but only jointly switchable Be ⁇ rich illuminate or bring to light.
  • the Leucht ⁇ unit is an LED.
  • the display unit is built into the housing or integrated therein or injected according to a conventional LED or the like, as it is known either in normal design or as an SMD component.
  • the housing is substantially opaque, wherein it has a light-permeable recess in an emission direction from which it is viewed on the display device, or in a light-transmissive layer, coating or the like. a recess. This In turn, saving has the shape of the symbol which is to be represented by the display device by means of a light-emitting display.
  • the housing of the LED is made directly opaque except for the recess.
  • the LED lights up with an outcome that corresponds to that with the mask attached.
  • the increased manufacturing costs that may be incurred as a result can be largely absorbed by automation.
  • this method makes it more cost-effective and, above all, safer in the production, since the assembly of masks or the like known from the prior art is more reliable. almost only by hand can be done. Incorrect assembly can cause malfunctions or at least an undesirable visual appearance.
  • the opacity of the housing can be achieved, for example, by means of a coating on the housing, which can be applied when the display unit is manufactured. It may be vor ⁇ seen, as is common in normal LED, that the housing is substantially transparent or herge ⁇ is made of transparent plastic. In a first version, it is subsequently provided with the coating except for the cut-out and thus rendered opaque except for the cut-out. In this version, therefore, no coating material is applied in the region of the recess or for the recess.
  • the recess or the passage of light can be subsequently produced by areawise removal of the coating material.
  • the top side of the housing in the emission direction can be formed continuously or flat or flat with coating applied thereto.
  • TERIAL This can be mechanically removed according to an embodiment of the invention, for example by engraving, scribing, cutting, boring or milling or the like.
  • the recess can be machined out of the coating with a laser beam or the coating removed there be, so essentially thermally.
  • the housing can have a projection on the side, which points in the emission direction, which has the shape of the recess.
  • This supernatant consists of the transparent material of the housing or is an integral part of it.
  • the coating can then be applied over a large area to the entire housing and thus also cover the supernatant. By sanding the side in the direction of radiation, the coating is then removed, so to speak, down to the supernatant. Although some layer thickness of the supernatant may be removed under certain circumstances, but this is harmless at least as long as a certain part of the supernatant remains. Around the supernatant is then still the coating, so that the housing can emit light only with the shape of the supernatant. In this type of manufacture, it is true that a different housing can be produced for each different symbol. However, the subsequent removal of the coating to the recess is easier.
  • an abovementioned supernatant can also be used.
  • the coating is then applied auf ⁇ , which is not coated by a cover of the top of the supernatant in the emission direction.
  • a coating on the housing can be applied at least at the side pointing in the direction of radiation right at the beginning with the recess remaining free.
  • a material is used as the coating, which is detached at light of specific wavelength and / or intensity. Then only the symbol to be represented needs to be projected onto the emission side of the completely coated housing, for example with a corresponding mask at the light source. There, the coating is removed and you get the desired recess.
  • an opaque plastic can be used as the coating as a thick layer.
  • the housing of the display unit can, for example, be overmoulded in one work step.
  • an opacity of the coating can be achieved.
  • the coating may be a lacquer or the like. be, in which the housing is immersed, for example. It may also have desired properties, as listed here.
  • the display unit has a single LED and, as previously stated, can represent only a single symbol. This symbol is determined by the shape of the recess.
  • 1 is a side view of an arrangement of a display device under a cover
  • FIG. 2 is a plan view of several embodiments of display units, each with different symbols or recesses,
  • FIG. 3 shows a housing of a display unit in the ground state, which consists of transparent material
  • FIG. 4 the housing according to FIG. 3, which is painted according to a first method except for a recess, FIG.
  • FIG. 5 the housing according to FIG. 3, which, according to a second method, is injection-molded to a recess with plastic, FIG.
  • FIG. 6 the housing of FIG. 3, which is encapsulated with a third method with plastic, wherein the recess adoptedgear ⁇ is processed,
  • FIG. 7 shows a modification of the housing similar to FIG. 3 with an overhang in the form of the recess as a ground state, FIG.
  • the housing according to FIG. 7, which according to a first method is injection-molded with plastic except for the projection;
  • the housing according to FIG. 7, which is completely injected with plastic around the projection and 10 shows the next processing step according to FIG. 9 with the plastic layer cut off.
  • Fig. 1 is shown in side view, as a display device 11, consisting of a display unit 13 on a support 15, as spielnem a circuit board, under a transparent cover 17, such as a glass ceramic plate of a glass ceramic Kochfel ⁇ is arranged ,
  • the display unit 13 has an LED 19 which has a housing 21 or is surrounded by it or is integrated therein. Down are symbolic by the carrier 15 An ⁇ connections 20 of the LED. In the case of a normal LED, for example, these can be the known feet made of metal wire.
  • electrical connections are provided at the side of the housing.
  • FIG. 2 shows three exemplary display units 13a-c. These each have different recesses 23a-c. These are used to show symbols corresponding to their shape by means of illumination, which will be explained in more detail below.
  • the display unit 13a shows a large A 23a in the luminous state
  • the display unit 13b the symbol 23b for an activated additional heater at a hotplate of a glass ceramic hob
  • the display unit 13c a bar 23c or a minus sign.
  • a base housing 25 which contains the dotted Darge presented LED 19.
  • the base housing 25 is that in which the functional structure of the LED 19 is integrated or in which it is cast.
  • Fig. 3 sozu ⁇ say a normal LED of transparent and possibly ein ⁇ dyed plastic is shown.
  • the basic housing 25 in approximately cuboid, but it could also be rounded or hemispherical.
  • the upward wei ⁇ send side forms the emission side 26.
  • This radiation side 26 is directed towards the cover 17 in FIG. 1, so that it is visible to an operator. It could also be rounded.
  • FIG. 4 shows how, according to a first version, the basic housing 25 according to FIG. 3 is covered with an opaque lacquer layer, which is illustrated by the hatching of the surface.
  • This lacquer layer 28 may be applied for example by a dip coating process. Alternatively, it can be sprayed on.
  • the lacquer layer 28 serves to prevent light from the LED 19 or light unit located in the base housing 25 from being exposed to the outside. Under certain circumstances, the lacquer layer 28 may be dispensed with at the underside opposite the emission side 26, which, however, also depends on the intended use. In any case, it should be avoided that light exits at the bottom and so can be seen laterally.
  • a recess 23 similar to the recess 23c of FIG. 2 is provided on the emission side 26, a recess 23 similar to the recess 23c of FIG. 2 is provided. In this area, no lacquer layer 28 is present, so that when the LED 19 is lit, a symbol corresponding to the shape of the recess 23 lights up and can be seen from above.
  • a kind of cover can be applied before painting in the form of the recess, which is subsequently removed.
  • Fig. 5 it is shown how the base housing 25, which is represented by the dashed line, surrounded by a relatively thick and lichtun Struktur ⁇ sige plastic layer 130 and is encapsulated.
  • this plastic layer 130 corresponds to the lacquer layer 28 according to FIG. 4, only the application method and the material is different.
  • a cutout 123 similar to that of FIG. 3 is provided on the emission side 126.
  • no plastic layer 130 is present, so that light can escape from the base housing 25 and the resulting housing 121.
  • the Ausspa ⁇ tion 123 can be generated for example in a corresponding encapsulation by a projection in the injection mold, which reaches up to the surface of the coated housing 25 and prevents that here the plastic layer is applied.
  • Another way to achieve the recesses 23 and 123 shown in FIGS. 4 and 5, may be to edit according to FIG. 6 with a laser 32 or a cutter 34 a self-contained lacquer layer 28 or plastic layer according to the recess 23 or to remove except for the basic housing or its emission side.
  • the covering or coating of the basic housing with the light-impermeable layer 28 is simpler.
  • lacquer layers 28 it is advantageously possible and technically manageable to achieve that the lacquer layer can be detached with relatively little energy from the laser 32, without adversely affecting the basic housing or the material.
  • FIG. 7 shows an output alternative to the basic housing 25 according to FIG. 3.
  • a projection 224 is formed at the top of the base housing 225 on the Ab ⁇ beam side 226, a projection 224 is formed.
  • the housing 221 can be surrounded or surrounded by a lacquer or plastic layer 230 approximately in accordance with FIG. 5 such that the thickness of the layer 230 corresponds approximately to the height of the projection 224 above the emission side 226 , at least on the radiation side itself. This causes the entire housing 221 is um ⁇ injected with plastic as in the previous figures and thus no light passes through.
  • Fig. 9 an alternative method is shown.
  • the base housing 325 is coated with a plastic layer 330 such that it also covers the entire projection 324 and in particular des ⁇ sen top.
  • Subsequent grinding with a grinding device 334 removes so much of the layer 330 that, according to FIG. 10, at least the upper side of the overhang 324 is exposed. Since the remaining housing 321 is still surrounded by the layer 330, light can again emerge only on the projection 324 with the outline of the recess 323 for the desired luminous symbol display.
  • FIGS. 3 to 6 either an opaque coating is applied to the LED housing. is brought, which leaves the recess already or exposes these later by editing or partial removal of the coating.
  • FIGS. 7 to 10 by providing a supernatant or the like. as an integral part of the housing already given in symbol form and ensured that at this point no coating covers the housing or the supernatant.
  • the covering layer is laid around the projection in a corresponding shape of the recess.
  • the coating is permanently applied to the housing, namely already on the production side before mounting the display unit on a printed circuit board or the like. This eliminates the step during assembly. Furthermore, the cover can not be dropped by carelessness or repelled.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention concerne un dispositif de visualisation (1) pour appareil électrique, pour lequel il est prévu une unité d'affichage (13), qui présente une DEL (19) avec un boîtier (21) transparent. Cette DEL (19) ou le boîtier (21) est muni(e) d'un revêtement (28, 30) non transparent, ainsi que d'un évidement (23) sous forme de symbole, sur une face de rayonnement (26). Le revêtement et l'évidement se présentent de manière que la lumière ne puisse être émise, en sortie du boîtier, qu'au niveau de l'évidement et constitue un affichage lumineux sous forme de symbole. Ledit boîtier (21,121) correspond à cet effet à un boîtier en matière plastique transparent, dans lequel une DEL (19) est intégrée de manière générale. Le revêtement est appliqué par conséquent de manière inamovible sur le boîtier. Ce système permet de ne pas avoir à appliquer ultérieurement des éléments de recouvrement ou similaires sur la DEL, lors d'un processus de montage d'un dispositif de visualisation. L'invention concerne en outre un procédé permettant de produire une unité d'affichage, un revêtement (28, 130, 230) étant appliqué sur le boîtier (25, 225) et un évidement (23, 123, 223) restant dégagé par rapport au revêtement.
PCT/EP2005/008715 2004-08-16 2005-08-11 Dispositif de visualisation pour appareil electrique et procede de production d'un tel dispositif de visualisation Ceased WO2006018214A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004040998.6 2004-08-16
DE200410040998 DE102004040998A1 (de) 2004-08-16 2004-08-16 Anzeigeeinrichtung für ein Elektrogerät und Verfahren zur Herstellung einer solchen Anzeigeeinrichtung

Publications (1)

Publication Number Publication Date
WO2006018214A1 true WO2006018214A1 (fr) 2006-02-23

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PCT/EP2005/008715 Ceased WO2006018214A1 (fr) 2004-08-16 2005-08-11 Dispositif de visualisation pour appareil electrique et procede de production d'un tel dispositif de visualisation

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Country Link
DE (1) DE102004040998A1 (fr)
WO (1) WO2006018214A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102577127A (zh) * 2009-07-28 2012-07-11 E.G.O.电气设备制造股份有限公司 传感器元件设备及生产传感器元件设备的模制主体的方法
WO2013020367A1 (fr) * 2011-08-09 2013-02-14 Ko Andy Nouvel éclairage à del
US8956491B2 (en) 2011-04-20 2015-02-17 Heraeus Deutschland GmbH & Co. KG Method for manufacturing a partially coated carrier structure
US9048842B2 (en) 2009-07-28 2015-06-02 E.G.O. Elektro-Geraetebau Gmbh Sensor element device for a capacitive proximity switch
CN107984167A (zh) * 2016-08-15 2018-05-04 广东欧珀移动通信有限公司 一种壳体的加工方法、壳体和移动终端

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027220A1 (de) * 2008-06-02 2009-12-03 E.G.O. Elektro-Gerätebau GmbH Anzeigevorrichtung für ein Kochfeld, Kochfeld und Verfahren zum Betrieb einer solchen Anzeigevorrichtung
DE102009054529A1 (de) * 2009-12-10 2011-06-16 BSH Bosch und Siemens Hausgeräte GmbH Anzeigeflächenelement für ein Hausgerät
DE102018102629A1 (de) * 2018-02-06 2019-08-08 Endress+Hauser SE+Co. KG Verfahren zur Herstellung einer Gehäusekomponente mit einem Sichtfenster

Citations (6)

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EP0366557A2 (fr) * 1988-10-27 1990-05-02 Shin-Etsu Polymer Co., Ltd. Couvercle anti-éblouissant pour indicateurs lumineux
US5404133A (en) * 1990-04-19 1995-04-04 Alps Electric Co., Ltd. Luminous key top
EP0859467A1 (fr) * 1997-02-17 1998-08-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Commutateur à effleurement avec capteur à touche
DE19958582A1 (de) * 1999-12-04 2001-06-21 Daimler Chrysler Ag Elektrischer Schalter
US6416844B1 (en) * 1997-04-25 2002-07-09 Trw Automotive Electronics & Components Gmbh & Co. Kg Apparatus with functional symbols adapted to be illuminated by associated transmitted light and method for making same
DE10335590A1 (de) * 2002-08-01 2004-02-26 Marquardt Gmbh Beleuchtbares Werkstück

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DE3713528C2 (de) * 1987-04-22 1996-06-05 J S C Technic Vertriebs & Prod Beleuchtbares Bedienungselement, wie Knopf oder Taste und Verfahren zu dessen Herstellung
DE19802571C2 (de) * 1998-01-23 2000-12-21 Bsh Bosch Siemens Hausgeraete Kochmulde mit Anzeigeelementen
DE19934707C1 (de) * 1999-07-23 2001-02-15 Siemens Ag Gehäuseoberschale für Geräte mit integrierter Tastatur und Display
DE20100300U1 (de) * 2001-01-09 2001-03-29 Stiebel Eltron GmbH & Co. KG, 37603 Holzminden Gehäuse
DE20110274U1 (de) * 2001-06-21 2002-08-01 Siemens AG, 80333 München Gehäuse und Abdeckung mit einer abgedichteten Öffnung zur Durchleitung von Licht

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366557A2 (fr) * 1988-10-27 1990-05-02 Shin-Etsu Polymer Co., Ltd. Couvercle anti-éblouissant pour indicateurs lumineux
US5404133A (en) * 1990-04-19 1995-04-04 Alps Electric Co., Ltd. Luminous key top
EP0859467A1 (fr) * 1997-02-17 1998-08-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Commutateur à effleurement avec capteur à touche
US6416844B1 (en) * 1997-04-25 2002-07-09 Trw Automotive Electronics & Components Gmbh & Co. Kg Apparatus with functional symbols adapted to be illuminated by associated transmitted light and method for making same
DE19958582A1 (de) * 1999-12-04 2001-06-21 Daimler Chrysler Ag Elektrischer Schalter
DE10335590A1 (de) * 2002-08-01 2004-02-26 Marquardt Gmbh Beleuchtbares Werkstück

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102577127A (zh) * 2009-07-28 2012-07-11 E.G.O.电气设备制造股份有限公司 传感器元件设备及生产传感器元件设备的模制主体的方法
US9048842B2 (en) 2009-07-28 2015-06-02 E.G.O. Elektro-Geraetebau Gmbh Sensor element device for a capacitive proximity switch
US9287866B2 (en) 2009-07-28 2016-03-15 E.G.O. Elektro-Gerätebau GmbH Sensor element device and method for producing a molded body of a sensor element device
CN102577127B (zh) * 2009-07-28 2016-05-11 E.G.O.电气设备制造股份有限公司 传感器元件设备及生产传感器元件设备的模制主体的方法
US8956491B2 (en) 2011-04-20 2015-02-17 Heraeus Deutschland GmbH & Co. KG Method for manufacturing a partially coated carrier structure
WO2013020367A1 (fr) * 2011-08-09 2013-02-14 Ko Andy Nouvel éclairage à del
CN107984167A (zh) * 2016-08-15 2018-05-04 广东欧珀移动通信有限公司 一种壳体的加工方法、壳体和移动终端

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