EP3136374B1 - Display device for an electrical appliance, electrical appliance and method for producing this display device - Google Patents
Display device for an electrical appliance, electrical appliance and method for producing this display device Download PDFInfo
- Publication number
- EP3136374B1 EP3136374B1 EP16184531.8A EP16184531A EP3136374B1 EP 3136374 B1 EP3136374 B1 EP 3136374B1 EP 16184531 A EP16184531 A EP 16184531A EP 3136374 B1 EP3136374 B1 EP 3136374B1
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- EP
- European Patent Office
- Prior art keywords
- cover
- display device
- electrical appliance
- coating
- luminous
- 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.)
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- 239000011248 coating agent Substances 0.000 claims description 63
- 238000000576 coating method Methods 0.000 claims description 63
- 229920001296 polysiloxane Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 239000002241 glass-ceramic Substances 0.000 description 20
- 230000006870 function Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010000496 acne Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
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Images
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
- G09F23/0058—Advertising on or in specific articles, e.g. ashtrays, letter-boxes on electrical household appliances, e.g. on a dishwasher, a washing machine or a refrigerator
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
- G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
Definitions
- the invention relates to an electrical appliance with a display device, which under certain circumstances may also have an operating function, in particular a hob. Furthermore, the invention relates to methods for producing such a display device.
- a display device with an LED is known.
- a masking structure made of silicone is provided and covers an LED as a lighting element.
- the cover made of silicone surrounds a printed circuit board on which the LED is arranged, and has sealing ribs protruding at a lower portion around the edge for a sealing function.
- the cover as silicone is held by a plastic mask or pressed against the circuit board.
- This display device can be arranged in a LED display for outdoor use, which is why the waterproof design is of great importance.
- a hob with a light indicator known.
- the underside of a hob plate of the hob has a structure with elevations and depressions. Between this underside and the illuminated display is a transparent silicone layer.
- a sensor element device for a touch switch or a display device is known, which is set via an LED on a circuit board.
- a shaped body of the sensor element device is provided with an electrically conductive coating which forms a sensor element for the capacitive touch switch.
- This coating is advantageously opaque.
- the invention has for its object to provide an aforementioned electrical device provided with a display device and method for producing such a display device with which problems of the prior art can be solved and it is particularly possible to achieve a good representation of a display and at the same time To ensure stable operation of the display device and advantageous manufacturability, in particular to avoid damage to the light-emitting elements.
- the display device for the electrical appliance has a flat component carrier and a holding device for this component carrier.
- the component carrier is to be installed in an electrical appliance or attached as a display, so that a holder of the display device takes place within the electrical appliance or on the electrical appliance via this holding device.
- at least two cuboid or block-like lighting elements are provided on the component carrier for the display.
- several, in particular most or even all, lighting elements on the component carrier or on a display device are largely identical.
- the light-emitting elements have luminous upper sides which point away from the component carrier and which point upwards and in particular toward a later display aperture.
- luminous tops are up and above all, the upper surfaces of a display device or a component carrier are in a common plane.
- light elements or below light sources are provided, preferably LED.
- Under lighting elements with luminous tops should also be understood here general display elements with corresponding display tops, these display elements, if they also contain light sources such as LED form lighting elements. Their tops are then luminous tops accordingly.
- the display device has at least one cover over the luminous elements, which consists of translucent and flexible or soft or elastic flat material.
- This cover rests on the luminous upper sides of the luminous elements, advantageously to a large extent or with more than 50% of the area of the luminous upper sides, in particular covering all luminous upper sides of all luminous elements on the component carrier.
- the cover is attached to the display device and thus a part of this. On this attachment will be discussed in more detail below.
- the cover with the display device forms a structural unit.
- the display device or this unit can later be installed in an electrical appliance, for example a hob.
- the translucent and flexible sheet material as a cover can thus a kind of protective layer or leveling layer or matching layer between the luminous element or Leuchtoberseite and a bottom of a display bezel or cover or the like., Which extends over the display device to be created. For example, unevenness can be compensated for and / or a protective function can be achieved.
- the cover has an upper side and a lower side. With the bottom it rests on the luminous top of the lighting elements, and with the top it can rest against the underside of a display bezel of an electrical appliance, for example, a hob plate of a hob, under which the display device is arranged.
- a display bezel of an electrical appliance for example, a hob plate of a hob, under which the display device is arranged.
- the luminous top of a luminous element can be provided with an opaque coating.
- This coating has at least one cutout per luminous element for the illuminated display.
- no coating is provided or light can occur in the appropriate form due to the section of the luminous element.
- a substantially large-area or full-surface coating of the luminous upper side can first take place, and then this coating is worked out with a specific pattern or a specific symbol shape as a cut-out or here the coating is removed.
- Such a removal of a coating is carried out particularly advantageously with laser.
- the coating is opaque, a light transmission is now given in the exposed areas or sections above the luminous top. The light can radiate through an overlying translucent or transparent cover.
- the coating can also be applied with a cutout in the form of a symbol, letter form or number form on the upper side of the luminous element for radiating through this section by means of an underlying luminous source.
- the cover may be provided on the top and / or bottom with an opaque coating, the coating over at least one light element has a cutout in symbol form, letter form or number form for irradiating the section by means of the underlying luminous element.
- the opaque coating could also be applied to the luminous upper sides of the luminous elements, but this is considered less advantageous here.
- the opaque coating it is possible here for the opaque coating to be applied to an upper side and / or a lower side of the cover, thereby releasing the cutouts immediately during production. Then the coating becomes equal in the desired shape with certain patterns or specific symbol shapes as cutouts and is then finished, so to speak.
- the cutout by removing a part of the coating which was originally also applied over the cutout to the cover or over a large area or over the entire surface.
- removal of the coating by means of laser is considered to be very advantageous.
- This is known in principle for individual lighting elements, see, for example, the aforementioned DE 102009036161 A1 .
- this coating is processed with certain patterns or specific symbol shapes as cutouts or here the coating is removed.
- the coating can first be applied to the top of the cover before the cover is fastened above the luminous elements or on the display device. Then the cutouts can be produced depending on the variant in the cover by removing the coating in the desired shape, advantageously by means of laser. So you do not have to produce several different variants. And above all, it is possible to dispense with a variant-dependent production of the luminous elements, which otherwise have a coating or masking or the like. would be provided, which is variant-dependent.
- the coating is opaque to light, there is now a light transmission above one or more light-emitting elements in the released or uncovered areas or cut-outs. These not only appear as simple mostly rectangular illuminated areas, but cause the display of illuminated or luminous patterns or symbol shapes.
- thin and / or elongated projections in the manner of ribs or webs can protrude downwards on the underside of the cover and engage between at least two lighting elements. They are advantageously integrally formed on the underside. You can thus avoid overshoot between individual lighting elements.
- the webs may extend at least to below the luminous upper sides of the luminous elements, preferably down to at least half the height of the luminous elements.
- the display device has a single cover, so that only a single part must be attached or attached to the display device.
- the cover extends consistently over the lighting elements.
- a cover covers or passes over a plurality of lighting elements or all lighting elements of the display device.
- the cover can cover at least 50% of the surface area of the component carrier, wherein it expediently forms a substantially closed and simply formed surface, for example essentially a rectangle. This area then extends only so far above the component carrier, as is necessary to cover the lighting elements. Thus, it is not the entire component carrier or its holding device or the entire display device must be covered by the cover.
- the cover is advantageous overall translucent or transparent and can be virtually not perceived from above. Due to the translucency of the cover in the manufactured cutouts with patterns or symbol shapes in the second basic embodiment of the invention, it can not be perceived virtually from above or disturbs the display function of the display device here. It forms a kind of masking to represent illuminated symbols, numbers or letters. Further good optical properties of the display can be achieved in that the cover at least above the lighting elements has a flat top and / or a flat bottom. This also improves a uniform contact of the lighting elements on a lower side of a display bezel.
- the cover has a constant or constant thickness, for example, everywhere over the luminous elements. The thickness can be relatively small and not more than 5 mm.
- it is 0.2 mm to 2 mm, particularly advantageously 0.4 mm to 0.8 mm.
- the cover on at least two sides, which may be in particular opposite sides, be attached to the component carrier and / or on the holding device.
- An attachment of the cover on the holding device or on the component carrier may advantageously be positive fit.
- Particularly advantageous is a positive fastening solvable or can be solved manually again, for example, for repair purposes.
- the cover along at least two sides, particularly advantageous exactly along two sides, one down has drawn edge. This can be narrow, but it can also be so wide that it occupies almost the height of the holding device. At this edge fastening means for the aforementioned locking or clamping connection of the cover are advantageously provided on the holding device.
- a possible material for the production of the cover is silicone, so that the cover can be made of silicone or consists thereof.
- This is as transparent as possible transparent silicone, particularly advantageous just transparent except for the aforementioned cover or coating. It should be relatively soft and may more preferably have a hardness of 50 to 70 Shore (A), preferably about 60 Shore (A). It is preferably also electrically insulating and thermally insulating.
- the cover can thus be designed as a kind of mat or mat-like, preferably with a rectangular base.
- the cover may not be particularly dimensionally stable due to the material used, especially in soft or elastic silicone. It can preferably achieve its essential dimensional stability when it is attached to the holding device or to the component carrier, that is to say to the display device. Even then, their stability is essentially necessary only in the direction of pressure on the cover or the display device from above.
- the component carrier has capacitive sensor elements to form a capacitive touch switch on the display device.
- capacitive sensor elements lie approximately in the same plane or extend in this plane as the luminous upper sides of the luminous elements.
- the capacitive sensor elements are still slightly above the luminous upper sides. They should exceed this by at least 1 mm. However, not only the luminous top should rest against the cover or be covered by this, but also the sensor elements.
- a capacitive sensor element is arranged on the upper side of a luminous element or on top of the luminous element. It is particularly advantageously arranged laterally next to the luminous upper side or surrounds the luminous upper side.
- the capacitive sensor element can have a plurality of narrow longitudinal sections or even only pin-like projections, that is to say does not have to be a coherent surface, as is the case with the aforementioned EP 2809006 A1 shows.
- the capacitive sensor element or its sections can be arranged laterally next to the luminous upper side or approximately surround the luminous upper side.
- the luminous top is not dominated by any other component on the component carrier of the holding device, if you do not count the cover here.
- the luminous top is surmounted only by the capacitive sensor elements, if any such are provided.
- this projection can be low and at most 2 mm, advantageously 0.7 mm to 1.5 mm.
- the electrical device according to the invention with the display device described above on a display bezel.
- a display Under this display panel, a display is provided with a display device having the light emitting elements as the light source and the cover having the opaque coating having the broken patterns or symbol shapes therein.
- This display panel runs over the display device and closes it or makes it suitable for use and possibly very robust for the desired use.
- the display device is pressed from below to the display bezel and thus abuts on the bottom. This has the advantage of the aforementioned exact definition of the distances between the luminous elements and the underside of the display bezel.
- the electrical appliance is a hob and has a hob plate, which then serves as a display screen.
- the display device is pressed against the underside of the hob plate, which is advantageously a glass ceramic hob plate.
- the hob plate on its underside on a structure which has elevations and depressions. This is usually formed in a glass ceramic cooktop as a kind Noppung, as the DE 4104983 C1 shows.
- the elevations should have a maximum height of 1 mm, advantageously only about 0.1 mm to 0.7 mm.
- the cover then rests in the recesses between the protrusions on the underside of the hob plate.
- the cover may serve as a kind of leveling or compensation for the uneven structure on the underside of the cooktop panel or, alternatively, on another display panel.
- the cover may serve as a kind of leveling or compensation for the uneven structure on the underside of the cooktop panel or, alternatively, on another display panel.
- the cover has the opaque coating on its upper side and thus lies against the underside of the hob plate, make sure that it is as scratch-resistant as possible and that it is not moved very much.
- the cover in the second basic embodiment of the invention can provide for the representation of the symbols, letters or numbers by means of the masking or coating. It can therefore provide the details of the display or indicator light.
- a display device 11 is shown in a first basic embodiment of the invention, in which Fig. 1 Specifically, a holding device 19 for a printed circuit board 13 with a cover 22.
- the circuit board 13 may be a conventional circuit board and has arranged thereon lighting elements 15 and display elements, as for example from the EP 2809006 A1 in block-like form are known. You can include the aforementioned light sources.
- the lighting elements 15 are here assembled, but are advantageous in itself items. Alternatively, one of the rows of luminous elements can also be regarded as a single luminous element.
- the lighting elements 15 each have luminous tops 16, which have an opaque coating mentioned at the outset, which is mounted on the actually translucent upper side and ensures that no light can escape from inside or below.
- this luminous top 16 then at least partially symbols 17 are formed, for which the coating has been removed, for example by laser.
- the symbols 17 can be numbers, letters or any other symbols or surfaces. So that this coating can be removed on the light top 16 by means of laser, it should not be too strong or stable and resistant. Therefore, there is the problem mentioned at the outset that damage to a structure on the underside of a display panel, in particular nubs of a glass-ceramic cooktop panel, can occur. This damage can even go so far that the coating is so severely diluted or pushed through or even damaged that light can escape unintentionally.
- the printed circuit board 13 is arranged in a receiving-like holding device 19, as is known per se and need not be further explained here.
- the holding device 19 has a circumferential wide edge on which hook-like projections 20 are provided on the opposite longitudinal sides.
- a cover 22 is substantially flat and flat with a cover surface 23, approximately in the manner of a rectangle, and covers a large part of the circuit board 13.
- the cover 23 has a constant thickness, for example, 0.4 mm.
- the cover 22 has a downwardly depending edge 24 with each of the projections 20 matching recesses 25.
- the cover 22 can be pulled over the holding device 19 with the circuit board 13 therein or slipped and fastened, so to speak. This will make the in Fig. 1 shown assembly of the finished display device 11 is formed.
- This display device 11 can then, like the FIGS. 6 and 8th show, in an electrical appliance, advantageously a hob, to be installed.
- a display device 111 is shown in a second basic embodiment of the invention, in which Fig. 4 Specifically, a holding device 119 for a printed circuit board 113 with a cover 122.
- the circuit board 113 may be a conventional circuit board and has arranged thereon lighting elements 115, as for example from the aforementioned EP 2809006 A1 in block-like form are known.
- the lighting elements 115 are assembled here, but are advantageous in itself items.
- one of the rows of luminous elements can also be regarded as a single luminous element.
- the lighting elements 115 each have luminous upper sides 116. These light up in the illuminated state on their entire surface upwards and thus form a kind of luminous or radiant rectangle.
- the printed circuit board 113 is arranged in a receiving-like holding device 119, as is known per se and need not be explained further here.
- the holding device 119 has a circumferential wide edge, on which hook-like projections 120 are provided on the opposite longitudinal sides.
- a cover 122 is substantially planar and flat, approximately in the manner of a rectangle, and covers a majority of the printed circuit board 113. It has a prescribed coating 123, which has approximately constant thickness, for example 0.01 mm to zero , 5 mm.
- the coating 123 is applied over the entire surface of the top of the actually translucent cover 122 and ensures that from the inside or down no light can escape from the light elements except at cutouts 117 in the form of specific symbols, letters or numbers. That's what the coating is for with the respective shape has been removed, for example by laser. This is known per se from the prior art, see also the aforementioned DE 102009036161 A1 , When fluoroscopy by means of the areal lighting elements 115 from below, a luminous appearance visible from above results only in the form of the symbols 117.
- the symbols 117 may be numbers, letters or any other symbols or surfaces.
- this coating 123 on the top of the cover 122 it should not be overly strong and stable. Therefore, there is the problem mentioned at the outset that damage to a structure on the underside of a display panel, in particular nubs of a glass-ceramic cooktop panel, can occur. This damage can even go so far that the coating is so much diluted or pushed through or even damaged, so that light can escape unintentionally.
- Symbols 117 shown are then corresponding to a finished electrical appliance, in particular a hob 131 Fig. 9 and 11 to see from above when irradiated by means of the light-emitting elements 115, as is known per se.
- the symbols 117 may have been released immediately when the coating 123 is applied to the cover, ie, so to speak, have been produced simultaneously with the coating 123.
- the coating 123 is applied over a large area or over the entire surface, the symbols 117 subsequently being produced in the form of numbers, letters or any other symbols by removal of the coating.
- the coating 123 is advantageously applied to the top of the cover 122, because then this removal can take place even after attaching the cover on the light-emitting elements 115 and on the holding device 119.
- a variant-dependent production or processing of the cover 122 is really possible.
- the cover 122 On both longitudinal sides, the cover 122 has a downwardly depending edge 124 on each of the projections 120 matching recesses 125. Thus, the cover 122 can be pulled over the holder 119 with the circuit board 113 therein or slipped and fastened, so to speak. This will make the in Fig. 4 shown assembly of the finished display device 111 formed.
- This display device 111 can then, like the Fig. 9 and 11 show, in an electrical appliance, advantageously a hob, to be installed.
- a possible alternative light-emitting element 115 ' is shown, which is also formed substantially block-like or cuboid, in particular according to the aforementioned EP 2809006 A1 .
- rib-like Capacitive sensor elements 118 formed of molded elastomeric material. This is electrically conductive and electrically contacted down to the circuit board 113, as is known in the prior art. Even with these capacitive sensor elements 118 there is the problem that they may not fit properly when placed against the structured underside of a panel, in particular an aforementioned glass ceramic cooktop panel, because of the mentioned knobs. Then, the operation of a capacitive touch switch formed thereby can be greatly impaired.
- a glass-ceramic cooktop panel 128 In bottom view, a glass-ceramic cooktop panel 128 is shown. It has a self-level bottom 29, protrude from the round or oval knobs 130. These nubs 130 have a regular arrangement with a few millimeters distance and even a height between 0.1 mm and a maximum of 1 mm.
- the knobs 130 are provided by design for such glass ceramic cooktop panels 128, but at the same time prepare the aforementioned problems by the non-planar bottom of the glass ceramic cooktop plate 128.
- the sectioned magnification of Fig. 11 shows these pimples even more clearly.
- a section of a hob 131 is shown in the assembled state, a section of a hob 131.
- a display 111 from Fig. 4 pressed, for example, with the springs 133 underneath which press on the underside of the holding device 119 and rest on a cooktop housing, as is known from the prior art.
- a display device 11 accordingly Fig. 1 be installed in the hob 131.
- the illustration of a conventional hob 231 'of Fig. 10 shows how a display device 211 'with light elements 215 is normally pressed against a lower side 229' of a glass-ceramic cooktop panel 228 'provided with nubs 230'.
- the lighting elements 215 may correspond to those of the invention and also have luminous tops.
- the lighting elements 215 are pressed with their luminous tops directly from below to the bottom 229 'of the glass ceramic hob plate 228'.
- their nubs 230 ' partly directly on the luminous tops and can push through, scratch or damage them.
- the aforementioned unwanted light phenomena or candling or blurring may occur in a generated illuminated symbolism. This should just be avoided with the invention.
- Fig. 11 is an enlarged section corresponding to the Fig. 9 shown.
- On the circuit board 113 is on the left a normal light-emitting element 115 accordingly Fig. 5 and 6 shown.
- On its overhead light side 116 the cover 122 is pressed. This is evident from the fact that the luminous element 115 with its luminous upper side 116 is pressed into the cover 122 a bit. Due to the flexibility or softness of the material of the cover 122, this is not a problem.
- an LED 114 is mounted on the printed circuit board 113 in order to irradiate the luminous element 115 upwards.
- the translucent or transparent cover 122 with the symbol 117 above in the actually opaque coating 123 and the glass ceramic hob plate 128 are irradiated, so that a lit symbol 117 on the top of the glass ceramic hob plate 128 and the hob 131 to see is.
- a modified luminous element 115 is corresponding Fig. 7 shown. It has on the upper side the upward capacitive elastic sensor elements 118. They are slightly exaggerated here, because of their narrow dimension stronger pressed into cover 122.
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Description
Die Erfindung betrifft ein Elektrogerät mit einer Anzeigeeinrichtung, die unter Umständen auch eine Bedienfunktion aufweisen kann, insbesondere ein Kochfeld. Des Weiteren betrifft die Erfindung Verfahren zur Herstellung einer solchen Anzeigeeinrichtung.The invention relates to an electrical appliance with a display device, which under certain circumstances may also have an operating function, in particular a hob. Furthermore, the invention relates to methods for producing such a display device.
Aus der
Aus der
Aus der
Aus der
Sie kann an die Unterseite einer Abdeckung oder Bedienblende angelegt sein. An einer Oberseite ist ein Formkörper der Sensorelementeinrichtung mit einer elektrisch leitfähigen Beschichtung versehen, die ein Sensorelement für den kapazitiven Berührungsschalter bildet. Diese Beschichtung ist vorteilhaft lichtundurchlässig.It can be attached to the underside of a cover or control panel. On an upper side, a shaped body of the sensor element device is provided with an electrically conductive coating which forms a sensor element for the capacitive touch switch. This coating is advantageously opaque.
Der Erfindung liegt die Aufgabe zugrunde, ein eingangs genanntes mit einer Anzeigeeinrichtung versehenes Elektrogerät sowie Verfahren zur Herstellung einer solchen Anzeigeeinrichtung zu schaffen, mit denen Probleme des Standes der Technik gelöst werden können und es insbesondere möglich ist, eine gute Darstellung einer Anzeige zu erreichen und gleichzeitig eine stabile Funktion der Anzeigeeinrichtung sowie vorteilhafte Herstellbarkeit sicherzustellen, insbesondere auch um eine Beschädigung der Leuchtelemente zu vermeiden.The invention has for its object to provide an aforementioned electrical device provided with a display device and method for producing such a display device with which problems of the prior art can be solved and it is particularly possible to achieve a good representation of a display and at the same time To ensure stable operation of the display device and advantageous manufacturability, in particular to avoid damage to the light-emitting elements.
Gelöst wird diese Aufgabe durch ein Elektrogerät mit den Merkmalen des Anspruchs 1 sowie Verfahren mit den Merkmalen der Ansprüche 12 und 13. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im Folgenden näher erläutert. Dabei werden manche der genannten Merkmale nur für das Elektrogerät oder nur für die Verfahren beschrieben. Sie sollen jedoch losgelöst davon sowohl für das Elektrogerät als auch für die Verfahren selbstständig und unabhängig gelten können. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This object is achieved by an electrical appliance with the features of
Es ist vorgesehen, dass die Anzeigeeinrichtung für das Elektrogerät einen flächigen Bauteilträger aufweist sowie eine Halteeinrichtung für diesen Bauteilträger. Mit dieser Halteeinrichtung soll der Bauteilträger in ein Elektrogerät eingebaut werden bzw. als Anzeige befestigt werden, so dass eine Halterung der Anzeigeeinrichtung innerhalb des Elektrogeräts bzw. am Elektrogerät über diese Halteeinrichtung erfolgt. Des Weiteren sind mindestens zwei quaderförmige bzw. blockartige Leuchtelemente auf dem Bauteilträger für die Anzeige vorgesehen. Vorteilhaft sind mehrere, insbesondere die meisten oder sogar alle, Leuchtelemente auf dem Bauteilträger bzw. an einer Anzeigeeinrichtung weitgehend baugleich. Die Leuchtelemente weisen Leuchtoberseiten auf, die vom Bauteilträger weg weisen bzw. die nach oben zeigen und insbesondere zu einer späteren Anzeigeblende hin. Diese Leuchtoberseiten liegen also oben und vor allem liegen die Leuchtoberseiten einer Anzeigeeinrichtung bzw. eines Bauteilträgers in einer gemeinsamen Ebene. In den Leuchtelementen bzw. darunter sind Leuchtquellen vorgesehen, vorteilhaft LED. Unter Leuchtelementen mit Leuchtoberseiten sollen hier auch allgemeine Anzeigeelemente mit entsprechenden Anzeigeoberseiten verstanden werden, wobei diese Anzeigeelemente, wenn sie Leuchtquellen wie beispielsweise LED enthalten eben auch Leuchtelemente bilden. Ihre Oberseiten sind dann dementsprechend Leuchtoberseiten.It is provided that the display device for the electrical appliance has a flat component carrier and a holding device for this component carrier. With this holding device, the component carrier is to be installed in an electrical appliance or attached as a display, so that a holder of the display device takes place within the electrical appliance or on the electrical appliance via this holding device. Furthermore, at least two cuboid or block-like lighting elements are provided on the component carrier for the display. Advantageously, several, in particular most or even all, lighting elements on the component carrier or on a display device are largely identical. The light-emitting elements have luminous upper sides which point away from the component carrier and which point upwards and in particular toward a later display aperture. So these luminous tops are up and above all, the upper surfaces of a display device or a component carrier are in a common plane. In the light elements or below light sources are provided, preferably LED. Under lighting elements with luminous tops should also be understood here general display elements with corresponding display tops, these display elements, if they also contain light sources such as LED form lighting elements. Their tops are then luminous tops accordingly.
Erfindungsgemäß ist vorgesehen, dass die Anzeigeeinrichtung mindestens eine Abdeckung über den Leuchtelementen aufweist, die aus lichtdurchlässigem und flexiblem bzw. weichem oder elastischem Flachmaterial besteht. Diese Abdeckung liegt auf den Leuchtoberseiten der Leuchtelemente auf, vorteilhaft zum großen Teil bzw. mit mehr als 50% der Fläche der Leuchtoberseiten, insbesondere überdeckt sie alle Leuchtoberseiten aller Leuchtelemente auf dem Bauteilträger. Die Abdeckung ist an der Anzeigeeinrichtung befestigt und somit ein Teil dieser. Auf diese Befestigung wird nachfolgend noch genauer eingegangen. Schließlich bildet die Abdeckung mit der Anzeigeeinrichtung eine Baueinheit. Beispielsweise kann die Anzeigeeinrichtung bzw. diese Baueinheit später in ein Elektrogerät, beispielsweise ein Kochfeld, eingebaut werden.According to the invention, it is provided that the display device has at least one cover over the luminous elements, which consists of translucent and flexible or soft or elastic flat material. This cover rests on the luminous upper sides of the luminous elements, advantageously to a large extent or with more than 50% of the area of the luminous upper sides, in particular covering all luminous upper sides of all luminous elements on the component carrier. The cover is attached to the display device and thus a part of this. On this attachment will be discussed in more detail below. Finally, the cover with the display device forms a structural unit. For example, the display device or this unit can later be installed in an electrical appliance, for example a hob.
Durch das Vorsehen des lichtdurchlässigen und flexiblen Flachmaterials als Abdeckung kann also eine Art Schutzschicht bzw. Ausgleichsschicht oder Anpassungsschicht zwischen Leuchtelement bzw. Leuchtoberseite und einer Unterseite einer Anzeigeblende oder Abdeckung odgl., die über der Anzeigeeinrichtung verläuft, geschaffen werden. Damit können beispielsweise Unebenheiten ausgeglichen werden und/oder eine Schutzfunktion erreicht werden.By providing the translucent and flexible sheet material as a cover can thus a kind of protective layer or leveling layer or matching layer between the luminous element or Leuchtoberseite and a bottom of a display bezel or cover or the like., Which extends over the display device to be created. For example, unevenness can be compensated for and / or a protective function can be achieved.
Bevorzugt weist die Abdeckung eine Oberseite und eine Unterseite auf. Mit der Unterseite liegt sie auf den Leuchtoberseiten der Leuchtelemente auf, und mit der Oberseite kann sie an der Unterseite einer Anzeigeblende eines Elektrogeräts anliegen, beispielsweise auch einer Kochfeldplatte eines Kochfelds, unter der die Anzeigeeinrichtung angeordnet ist.Preferably, the cover has an upper side and a lower side. With the bottom it rests on the luminous top of the lighting elements, and with the top it can rest against the underside of a display bezel of an electrical appliance, for example, a hob plate of a hob, under which the display device is arranged.
In einer ersten grundsätzlichen Ausgestaltung der Erfindung kann die Leuchtoberseite eines Leuchtelements mit einer lichtundurchlässigen Beschichtung versehen sein. Diese Beschichtung weist pro Leuchtelement mindestens einen Ausschnitt auf für die Leuchtanzeige. Hier ist keine Beschichtung vorgesehen bzw. hier kann Licht in der entsprechenden Form aufgrund des Ausschnitts aus dem Leuchtelement auftreten. Es kann also zuerst eine im Wesentlichen großflächige oder vollflächige Beschichtung der Leuchtoberseite erfolgen, und dann wird diese Beschichtung mit einem bestimmten Muster oder einer bestimmten Symbolform als Ausschnitt herausgearbeitet bzw. hier wird die Beschichtung entfernt. Ein solches Entfernen einer Beschichtung ist besonders vorteilhaft mit Laser durchgeführt. Da die Beschichtung lichtundurchlässig ist, ist nun in den freigelegten Bereichen bzw. Ausschnitten eine Lichtdurchlässigkeit oberhalb von der Leuchtoberseite gegeben. Das Licht kann durch eine darüberliegende lichtdurchlässige bzw. transparente Abdeckung hindurchstrahlen. Alternativ kann die Beschichtung auch gleich mit einem Ausschnitt in Symbolform, Buchstabenform oder Zahlenform auf die Leuchtoberseite aufgebracht werden zur Durchstrahlung dieses Ausschnitts mittels einer darunterliegenden Leuchtquelle.In a first basic embodiment of the invention, the luminous top of a luminous element can be provided with an opaque coating. This coating has at least one cutout per luminous element for the illuminated display. Here, no coating is provided or light can occur in the appropriate form due to the section of the luminous element. Thus, a substantially large-area or full-surface coating of the luminous upper side can first take place, and then this coating is worked out with a specific pattern or a specific symbol shape as a cut-out or here the coating is removed. Such a removal of a coating is carried out particularly advantageously with laser. Since the coating is opaque, a light transmission is now given in the exposed areas or sections above the luminous top. The light can radiate through an overlying translucent or transparent cover. Alternatively, the coating can also be applied with a cutout in the form of a symbol, letter form or number form on the upper side of the luminous element for radiating through this section by means of an underlying luminous source.
In einer zweiten grundsätzlichen Ausgestaltung der Erfindung kann die Abdeckung an der Oberseite und/oder der Unterseite mit einer lichtundurchlässigen Beschichtung versehen sein, wobei die Beschichtung über mindestens einem Leuchtelement einen Ausschnitt in Symbolform, Buchstabenform oder Zahlenform aufweist zur Durchstrahlung des Ausschnitts mittels des darunterliegenden Leuchtelements. In alternativer Ausgestaltung könnte die lichtundurchlässige Beschichtung auch auf die Leuchtoberseiten der Leuchtelemente aufgebracht sein, das wird hier aber als weniger vorteilhaft angesehen.In a second basic embodiment of the invention, the cover may be provided on the top and / or bottom with an opaque coating, the coating over at least one light element has a cutout in symbol form, letter form or number form for irradiating the section by means of the underlying luminous element. In an alternative embodiment, the opaque coating could also be applied to the luminous upper sides of the luminous elements, but this is considered less advantageous here.
Einerseits ist es hier gemäß der Erfindung möglich, dass die lichtundurchlässige Beschichtung auf eine Oberseite und/oder eine Unterseite der Abdeckung aufgebracht wird und dabei gleich bei der Herstellung die Ausschnitte freigelassen werden. Dann wird die Beschichtung gleich in der gewünschten Form mit bestimmten Mustern oder bestimmten Symbolformen als Ausschnitte hergestellt und ist dann sozusagen fertig.On the one hand, according to the invention, it is possible here for the opaque coating to be applied to an upper side and / or a lower side of the cover, thereby releasing the cutouts immediately during production. Then the coating becomes equal in the desired shape with certain patterns or specific symbol shapes as cutouts and is then finished, so to speak.
Andererseits ist es gemäß der Erfindung möglich, den Ausschnitt durch Entfernen eines Teils der Beschichtung, die ursprünglich auch über dem Ausschnitt auf die Abdeckung bzw. großflächig oder vollflächig aufgebracht war, herzustellen. Insbesondere ein Entfernen der Beschichtung mittels Laser wird als sehr vorteilhaft angesehen. Dies ist prinzipiell bekannt für einzelne Leuchtelemente, siehe beispielsweise die vorgenannte
Bei einem Verfahren zur nachträglichen Entfernung von Bereichen der Beschichtung zur Herstellung der Ausschnitte kann zuerst die Beschichtung auf die Oberseite der Abdeckung aufgebracht werden bevor die Abdeckung über den Leuchtelementen bzw. an der Anzeigeeinrichtung befestigt wird. Dann können die Ausschnitte variantenabhängig in der Abdeckung hergestellt werden durch Entfernung der Beschichtung in der gewünschten Form, vorteilhaft mittels Laser. So müssen nicht mehrere verschiedene Varianten produziert werden. Und es kann vor allem auch auf eine variantenabhängige Produktion der Leuchtelemente verzichtet werden, die ansonsten mit einer Beschichtung oder Maskierung odgl. versehen wären, die variantenabhängig ist.In a method for the subsequent removal of regions of the coating to produce the cutouts, the coating can first be applied to the top of the cover before the cover is fastened above the luminous elements or on the display device. Then the cutouts can be produced depending on the variant in the cover by removing the coating in the desired shape, advantageously by means of laser. So you do not have to produce several different variants. And above all, it is possible to dispense with a variant-dependent production of the luminous elements, which otherwise have a coating or masking or the like. would be provided, which is variant-dependent.
Da die Beschichtung lichtundurchlässig ist, ist nun in den freigelassenen oder freigelegten Bereichen bzw. Ausschnitten eine Lichtdurchlässigkeit oberhalb von einem oder mehreren Leuchtelementen gegeben. Diese erscheinen also nicht nur als einfache meist rechteckige Leuchtflächen, sondern bewirken die Anzeige von beleuchteten bzw. leuchtenden Mustern oder Symbolformen.Since the coating is opaque to light, there is now a light transmission above one or more light-emitting elements in the released or uncovered areas or cut-outs. These not only appear as simple mostly rectangular illuminated areas, but cause the display of illuminated or luminous patterns or symbol shapes.
In Ausgestaltung der Erfindung können an der Unterseite der Abdeckung dünne und/oder längliche Vorsprünge nach Art von Rippen oder Stegen nach unten abstehen und zwischen mindestens zwei Leuchtelemente greifen. Sie sind vorteilhaft an der Unterseite angeformt. Sie können so ein Überstrahlen zwischen einzelnen Leuchtelementen vermeiden. Dabei können die Stege mindestens bis unter die Leuchtoberseiten der Leuchtelemente reichen, vorzugsweise nach unten bis mindestens zur halben Höhe der Leuchtelemente.In an embodiment of the invention, thin and / or elongated projections in the manner of ribs or webs can protrude downwards on the underside of the cover and engage between at least two lighting elements. They are advantageously integrally formed on the underside. You can thus avoid overshoot between individual lighting elements. In this case, the webs may extend at least to below the luminous upper sides of the luminous elements, preferably down to at least half the height of the luminous elements.
Vorteilhaft weist die Anzeigeeinrichtung eine einzige Abdeckung auf, so dass nur ein einziges Teil an der Anzeigeeinrichtung befestigt bzw. angebracht werden muss. Besonders vorteilhaft verläuft die Abdeckung dabei durchgängig über den Leuchtelementen. Dies bedeutet, dass eine Abdeckung mehrere Leuchtelemente bzw. alle Leuchtelemente der Anzeigeeinrichtung überdeckt bzw. über diesen verläuft. Dabei kann die Abdeckung mindestens 50% der Fläche des Bauteilträgers überdecken, wobei sie sinnigerweise eine im Wesentlichen geschlossene und einfach ausgebildete Fläche, beispielsweise im Wesentlichen ein Rechteck, bildet. Diese Fläche verläuft dann nur so weit über dem Bauteilträger, wie es nötig ist, um die Leuchtelemente zu überdecken. Es muss also nicht der gesamte Bauteilträger bzw. dessen Halteeinrichtung oder die gesamten Anzeigeeinrichtung von der Abdeckung überdeckt werden.Advantageously, the display device has a single cover, so that only a single part must be attached or attached to the display device. Particularly advantageous, the cover extends consistently over the lighting elements. This means that a cover covers or passes over a plurality of lighting elements or all lighting elements of the display device. In this case, the cover can cover at least 50% of the surface area of the component carrier, wherein it expediently forms a substantially closed and simply formed surface, for example essentially a rectangle. This area then extends only so far above the component carrier, as is necessary to cover the lighting elements. Thus, it is not the entire component carrier or its holding device or the entire display device must be covered by the cover.
Bei der ersten grundsätzlichen Ausgestaltung der Erfindung ist die Abdeckung vorteilhaft insgesamt lichtdurchlässig bzw. durchsichtig und kann von oben quasi nicht wahrgenommen werden. Durch die Lichtdurchlässigkeit der Abdeckung in den hergestellten Ausschnitten mit Mustern oder Symbolformen bei der zweiten grundsätzlichen Ausgestaltung der Erfindung kann sie von oben quasi nicht wahrgenommen werden bzw. stört hier die Anzeige-Funktion der Anzeigeeinrichtung nicht. Sie bildet eine Art Maskierung, um beleuchtete Symbole, Zahlen oder Buchstaben darstellen zu können. Weitere gute optische Eigenschaften der Anzeige können dadurch erreicht werden, dass die Abdeckung zumindest oberhalb der Leuchtelemente eine ebene Oberseite und/oder eine ebene Unterseite aufweist. Dies verbessert auch ein gleichmäßiges Anliegen der Leuchtelemente an einer Unterseite einer Anzeigeblende. Vorteilhaft weist die Abdeckung dabei eine gleichbleibende bzw. konstante Dicke auf, beispielsweise überall über den Leuchtelementen. Die Dicke kann relativ gering sein und maximal 5 mm betragen. Vorteilhaft beträgt sie 0,2 mm bis 2 mm, besonders vorteilhaft 0,4 mm bis 0,8 mm.In the first basic embodiment of the invention, the cover is advantageous overall translucent or transparent and can be virtually not perceived from above. Due to the translucency of the cover in the manufactured cutouts with patterns or symbol shapes in the second basic embodiment of the invention, it can not be perceived virtually from above or disturbs the display function of the display device here. It forms a kind of masking to represent illuminated symbols, numbers or letters. Further good optical properties of the display can be achieved in that the cover at least above the lighting elements has a flat top and / or a flat bottom. This also improves a uniform contact of the lighting elements on a lower side of a display bezel. Advantageously, the cover has a constant or constant thickness, for example, everywhere over the luminous elements. The thickness can be relatively small and not more than 5 mm. Advantageously, it is 0.2 mm to 2 mm, particularly advantageously 0.4 mm to 0.8 mm.
Zur Befestigung kann die Abdeckung an zumindest zwei Seiten, welches insbesondere gegenüberliegende Seiten sein können, am Bauteilträger und/oder an der Halteeinrichtung befestigt sein. Somit braucht kein aufwendiger beispielsweise umlaufender Rahmen für die Abdeckung vorgesehen werden, der sie überall hält. Eine Befestigung der Abdeckung an der Halteeinrichtung bzw. am Bauteilträger kann vorteilhaft formschlüssig sein. Besonders vorteilhaft ist eine formschlüssige Befestigung lösbar bzw. kann manuell wieder gelöst werden, beispielsweise zu Reparaturzwecken. Für die Befestigung kann beispielsweise eine bei Aufsetzen selbsttätig hergestellte Rast- bzw. Klemmverbindung vorgesehen sein.For attachment, the cover on at least two sides, which may be in particular opposite sides, be attached to the component carrier and / or on the holding device. Thus no complex, for example, circulating frame needs to be provided for the cover, which holds it everywhere. An attachment of the cover on the holding device or on the component carrier may advantageously be positive fit. Particularly advantageous is a positive fastening solvable or can be solved manually again, for example, for repair purposes. For example, it is possible to provide a latching or clamping connection which is produced automatically when it is put on.
In weiterer Ausgestaltung der Erfindung ist es möglich, dass die Abdeckung entlang von mindestens zwei Seiten, besonders vorteilhaft genau entlang von zwei Seiten, einen nach unten gezogenen Rand aufweist. Dieser kann schmal sein, er kann aber auch so breit sein, dass er nahezu die Höhe der Halteeinrichtung einnimmt. An diesem Rand sind vorteilhaft Befestigungsmittel für die vorgenannte Rast- bzw. Klemmverbindung der Abdeckung an der Halteeinrichtung vorgesehen.In a further embodiment of the invention, it is possible that the cover along at least two sides, particularly advantageous exactly along two sides, one down has drawn edge. This can be narrow, but it can also be so wide that it occupies almost the height of the holding device. At this edge fastening means for the aforementioned locking or clamping connection of the cover are advantageously provided on the holding device.
Ein mögliches Material zur Herstellung der Abdeckung ist Silikon, so dass die Abdeckung aus Silikon hergestellt sein kann bzw. daraus besteht. Vorteilhaft ist dies möglichst durchsichtiges Silikon, besonders vorteilhaft eben durchsichtig bis auf die vorgenannte Abdeckung bzw. Beschichtung. Es sollte relativ weich sein und kann besonders vorteilhaft eine Härte von 50 bis 70 Shore (A) aufweisen, vorzugsweise etwa 60 Shore (A). Es ist bevorzugt auch elektrisch isolierend und thermisch dämmend.A possible material for the production of the cover is silicone, so that the cover can be made of silicone or consists thereof. This is as transparent as possible transparent silicone, particularly advantageous just transparent except for the aforementioned cover or coating. It should be relatively soft and may more preferably have a hardness of 50 to 70 Shore (A), preferably about 60 Shore (A). It is preferably also electrically insulating and thermally insulating.
In weiterer Ausgestaltung der Erfindung kann die Abdeckung also als eine Art Matte bzw. mattenartig ausgebildet sein, vorzugsweise mit rechteckiger Grundfläche. Dabei kann die Abdeckung aufgrund des verwendeten Materials, insbesondere bei weichem bzw. elastischem Silikon, nicht besonders formstabil sein. Ihre wesentliche Formstabilität kann sie bevorzugt dann erreichen, wenn sie an der Halteeinrichtung bzw. an dem Bauteilträger, somit also an der Anzeigeeinrichtung, befestigt ist. Auch dann ist ihre Stabilität im Wesentlichen nur in der Richtung bei Druck auf die Abdeckung bzw. die Anzeigeeinrichtung von oben notwendig.In a further embodiment of the invention, the cover can thus be designed as a kind of mat or mat-like, preferably with a rectangular base. The cover may not be particularly dimensionally stable due to the material used, especially in soft or elastic silicone. It can preferably achieve its essential dimensional stability when it is attached to the holding device or to the component carrier, that is to say to the display device. Even then, their stability is essentially necessary only in the direction of pressure on the cover or the display device from above.
Bei der Erfindung weist der Bauteilträger kapazitive Sensorelemente auf, um einen kapazitiven Berührungsschalter an der Anzeigeeinrichtung zu bilden. Durch Auflegen eines Fingers an einer Blende vor dem kapazitiven Sensorelement kann ein Schaltvorgang ausgelöst werden. Dies ist beispielsweise aus der vorgenannten
Vorteilhaft ist ein kapazitives Sensorelement auf der Oberseite eines Leuchtelements bzw. oben an dem Leuchtelement angeordnet. Besonders vorteilhaft ist es seitlich neben der Leuchtoberseite angeordnet bzw. umgibt die Leuchtoberseite. Dabei kann das kapazitive Sensorelement mehrere schmale Längsabschnitte oder sogar nur zapfenartige Vorsprünge aufweisen, muss also nicht eine zusammenhängende Fläche sein, wie es die vorgenannte
So können das kapazitive Sensorelement bzw. dessen Abschnitte seitlich neben der Leuchtoberseite angeordnet sein bzw. die Leuchtoberseite ungefähr umgeben.Thus, the capacitive sensor element or its sections can be arranged laterally next to the luminous upper side or approximately surround the luminous upper side.
In vorteilhafter Ausgestaltung der Erfindung ist die Leuchtoberseite weder von einem anderen Bauteil auf dem Bauteilträger noch von der Halteeinrichtung überragt, wenn man die Abdeckung hier nicht zählt. Vorteilhaft wird die Leuchtoberseite nur von den kapazitiven Sensorelementen überragt, falls überhaupt solche vorgesehen sind. Dieses Überragen kann aber gering sein und maximal 2 mm betragen, vorteilhaft 0,7 mm bis 1,5 mm.In an advantageous embodiment of the invention, the luminous top is not dominated by any other component on the component carrier of the holding device, if you do not count the cover here. Advantageously, the luminous top is surmounted only by the capacitive sensor elements, if any such are provided. However, this projection can be low and at most 2 mm, advantageously 0.7 mm to 1.5 mm.
Bei der Erfindung weist das erfindungsgemäße Elektrogerät mit der zuvor beschriebenen Anzeigeeinrichtung eine Anzeigeblende auf. Unter dieser Anzeigeblende wird mit einer Anzeigeeinrichtung eine Anzeige erzeugt, und zwar mit den Leuchtelementen als Leuchtquelle und der Abdeckung mit der lichtundurchlässigen Beschichtung mit den durchbrochenen Mustern oder Symbolformen darin. Diese Anzeigeblende verläuft über der Anzeigeeinrichtung und verschließt diese bzw. macht sie gebrauchstauglich und evtl. für den gewünschten Einsatz sehr robust. Die Anzeigeeinrichtung ist von unten an die Anzeigeblende angedrückt und liegt somit an der Unterseite an. Dies weist den Vorteil der vorgenannten genauen Definition der Abstände zwischen den Leuchtelementen und der Unterseite der Anzeigeblende auf.In the invention, the electrical device according to the invention with the display device described above on a display bezel. Under this display panel, a display is provided with a display device having the light emitting elements as the light source and the cover having the opaque coating having the broken patterns or symbol shapes therein. This display panel runs over the display device and closes it or makes it suitable for use and possibly very robust for the desired use. The display device is pressed from below to the display bezel and thus abuts on the bottom. This has the advantage of the aforementioned exact definition of the distances between the luminous elements and the underside of the display bezel.
Bei der Erfindung ist das Elektrogerät ein Kochfeld und weist eine Kochfeldplatte auf, die dann hier als Anzeigeblende dient. Dabei ist die Anzeigeeinrichtung an die Unterseite der Kochfeldplatte angedrückt, welche vorteilhaft eine Glaskeramik-Kochfeldplatte ist. Dabei weist die Kochfeldplatte an ihrer Unterseite eine Struktur auf, welche Erhebungen und Vertiefungen aufweist. Üblicherweise ist dies bei einer Glaskeramik-Kochfeldplatte als eine Art Noppung ausgebildet, wie dies die
Neben der Funktion Nivellierung oder Ausgleich kann die Abdeckung bei der zweiten grundsätzlichen Ausgestaltung der Erfindung durch die Maskierung bzw. Beschichtung für die Darstellung der Symbole, Buchstaben oder Zahlen sorgen. Sie kann also für die Details der Anzeige bzw. Leuchtanzeige sorgen.In addition to the function of leveling or compensation, the cover in the second basic embodiment of the invention can provide for the representation of the symbols, letters or numbers by means of the masking or coating. It can therefore provide the details of the display or indicator light.
Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Die Unterteilung der Anmeldung in einzelnen Abschnitte sowie Zwischen-Überschriften beschränken die unter diesen gemachten Aussagen nicht in ihrer Allgemeingültigkeit.These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combinations in an embodiment of the invention and in other fields be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application in individual sections as well as intermediate headings do not limit the statements made thereunder in their generality.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen schematisch dargestellt und wird im Folgenden näher erläutert. In den Zeichnungen zeigen:
- Fig. 1
- eine Schrägansicht von oben auf eine erste grundsätzliche Anzeigeeinrichtung mit Abdeckung,
- Fig. 2
- die Anzeigeeinrichtung aus
Fig. 1 ohne die Abdeckung, - Fig. 3
- eine Leiterplatte als Bauteilträger der Anzeigeeinrichtung aus
Fig. 1 , - Fig. 4
- eine Schrägansicht von oben auf eine zweite grundsätzliche Anzeigeeinrichtung mit Abdeckung mit Ausschnitten in Form von Symbolen, Buchstaben und Zahlen,
- Fig. 5
- die Anzeigeeinrichtung aus
Fig. 4 ohne die Abdeckung, - Fig. 6
- eine Leiterplatte als Bauteilträger der Anzeigeeinrichtung aus
Fig. 4 , - Fig. 7
- eine Schrägansicht eines Leuchtelements für eine Anzeigeeinrichtung entsprechend den
Fig. 1 mit auf der Oberseite angebrachten, rippenartigen kapazitiven Sensorelementen,bis 6 - Fig. 8
- eine Draufsicht auf eine Unterseite einer Glaskeramik-Kochfeldplatte mit Noppen,
- Fig. 9
- eine Seitenansicht eines erfindungsgemäßen Kochfelds mit einer Glaskeramik-Kochfeldplatte entsprechend
Fig. 8 , an deren Unterseite die Anzeigeeinrichtung ausFig. 1 oder 4 angedrückt ist, - Fig. 10
- eine Ausbildung eines Kochfelds entsprechend
Fig. 9 gemäß dem Stand der Technik ohne Abdeckung und - Fig. 11
- eine stark schematische Vergrößerung eines Ausschnitts aus
Fig. 9 .
- Fig. 1
- an oblique view from above of a first basic display device with cover,
- Fig. 2
- the display device off
Fig. 1 without the cover, - Fig. 3
- a circuit board as a component carrier of the display device
Fig. 1 . - Fig. 4
- an oblique view from above of a second basic display device with cover with cutouts in the form of symbols, letters and numbers,
- Fig. 5
- the display device off
Fig. 4 without the cover, - Fig. 6
- a circuit board as a component carrier of the display device
Fig. 4 . - Fig. 7
- an oblique view of a lighting element for a display device according to the
Fig. 1 to 6 with rib-like capacitive sensor elements mounted on top, - Fig. 8
- a top view of an underside of a glass ceramic hob plate with knobs,
- Fig. 9
- a side view of a hob according to the invention with a glass ceramic hob plate accordingly
Fig. 8 , on the underside of the display deviceFig. 1 or4 is pressed - Fig. 10
- a training of a hob accordingly
Fig. 9 according to the prior art without cover and - Fig. 11
- a strongly schematic enlargement of a detail from
Fig. 9 ,
In den
Die Leiterplatte 13 ist in einer aufnahmeartigen Halteeinrichtung 19 angeordnet, wie dies an sich bekannt ist und hier nicht weiter erläutert werden muss. Die Halteeinrichtung 19 weist einen umlaufenden breiten Rand auf, an dem hakenartige Vorsprünge 20 an den gegenüberliegenden Längsseiten vorgesehen sind.The printed
Wie die
In den
Die Leiterplatte 113 ist in einer aufnahmeartigen Halteeinrichtung 119 angeordnet, wie dies an sich bekannt ist und hier nicht weiter erläutert werden muss. Die Halteeinrichtung 119 weist einen umlaufenden breiten Rand auf, an dem hakenartige Vorsprünge 120 an den gegenüberliegenden Längsseiten vorgesehen sind.The printed
Wie die
Die Symbole 117 können Zahlen, Buchstaben oder auch sonstige beliebige Symbole oder Flächen sein. Damit diese Beschichtung 123 an der Oberseite der Abdeckung 122 mittels Laser entfernt werden kann, sollte sie nicht allzu fest bzw. stabil und beständig sein. Deswegen besteht ja das eingangs genannte Problem, dass bei einem Andrücken an eine Struktur an der Unterseite einer Anzeigeblende, insbesondere Noppen einer Glaskeramik-Kochfeldplatte, eine Beschädigung auftreten kann. Diese Beschädigung kann sogar so weit gehen, dass die Beschichtung derart stark verdünnt bzw. durchgedrückt oder sogar beschädigt wird, so dass Licht ungewollt austreten kann. Die in
Die Symbole 117 können beim Aufbringen der Beschichtung 123 auf die Abdeckung gleich freigelassen worden sein, also sozusagen gleichzeitig mit der Beschichtung 123 erzeugt worden sein. Alternativ wird die Beschichtung 123 großflächig oder vollflächig aufgebracht, wobei dann nachträglich die Symbole 117 in Form von Zahlen, Buchstaben oder auch sonstige beliebige Symbolen hergestellt werden durch Entfernen der Beschichtung. Dafür ist die Beschichtung 123 vorteilhaft auf der Oberseite der Abdeckung 122 aufgebracht, denn dann kann dieses Entfernen sogar erst nach Anbringen der Abdeckung über den Leuchtelementen 115 bzw. an der Halteeinrichtung 119 erfolgen. Somit ist wirklich eine variantenabhängige Herstellung bzw. Bearbeitung der Abdeckung 122 möglich.The
An beiden Längsseiten weist die Abdeckung 122 einen nach unten gehenden Rand 124 auf mit jeweils zu den Vorsprüngen 120 passenden Ausnehmungen 125. So kann die Abdeckung 122 über die Halteeinrichtung 119 mit der Leiterplatte 113 darin gezogen oder sozusagen gestülpt und befestigt werden. Dadurch wird die in
In der
In der
In
Unter der Glaskeramik-Kochfeldplatte 128 sind auch noch weitere Funktionseinheiten wie vor allem Heizeinrichtungen angeordnet, die hier aber nicht dargestellt sind, weil sie auch keine Rolle spielen. Es ist zu erkennen, dass die Anzeigeeinrichtung 11 bzw. 111 mit der vollen Fläche bzw. Beschichtung 123 der Abdeckung 122 an der Unterseite 129 der Glaskeramik-Kochfeldplatte 128 anliegt. Dabei drücken sich natürlich, wie die
Die Darstellung eines herkömmlichen Kochfelds 231' der
In der
Rechts neben dem Leuchtelement 115 ist ein modifiziertes Leuchtelement 115' entsprechend
Vor allem ist aus der
Claims (14)
- Electrical appliance (131) having a display device (11, 111), comprising- a planar component support,- at least two cuboid-shaped or block-type illuminating elements on the component support for a display,
wherein the illuminating elements have luminous top side facing away from the component support and located in a common plane,- lighting sources in the illuminating elements,- a holding device for the component support,
wherein- the display device (11, 111) has at least one cover above the illuminating elements,- the cover is composed of translucent and flexible flat material, rests on the luminous top sides, is fixed to the display device as a part thereof and forms a structural unit with the display device,- the electrical appliance has a display covering panel (128) with the display device (11, 111) arranged thereunder,- the display device and the cover (22, 122) being pressed to the bottom side (129) of the display covering panel (128) and with it resting on said bottom side (129),- the electrical appliance is a cooktop (131) having a cooktop plate (128) as a display covering panel, wherein the display device (11, 111) is pressed to the bottom side (129) of the cooktop plate,- the cooktop plate (128) has, on the bottom side (129), a structure including elevations (130) and depressions,- the cover (22, 122) rests on the bottom side (129) of the cooktop plate (128) in the depressions between the elevations (130),- the component support includes capacitive sensor elements for providing a capacitive touch-sensitive switch on the display device,- the capacitive sensor elements are located approximately in the same plane as the luminous top sides of the illuminating elements or somewhat above. - Electrical appliance according to claim 1, characterized in that the structure has a height of at maximum 1 mm.
- Electrical appliance according to claim 1 or 2, characterized in that the luminous top sides are provided with an opaque coating which, per illuminating element, has at least one section without coating, wherein preferably the luminous top side and the coating, respectively, does neither have another component on the component support nor the holding device projecting beyond, in particular only the capacitive sensor element is projecting beyond.
- Electrical appliance according to claim 1 or 2, characterized in that the cover has a top side and a bottom side and with the bottom side rests on the luminous top sides of the illuminating elements, wherein the cover on the top side and/or the bottom side is provided with an opaque coating, wherein the coating has above at least one illuminating element a section in the shape of a symbol, the shape of a letter or the shape of a digit for the illuminating element located underneath to be shining through said section, wherein preferably the section has been produced by removing part of the coating which originally was also applied on the cover above the section, in particular by removing the coating using laser.
- Electrical appliance according to claim 4, characterized in that on the bottom side of the cover thin protrusions in the type of ribs or bars project downwards and engage between at least two illuminating elements, wherein the bars reach at least to below the luminous top sides of the illuminating elements, preferably downwards to at least half the height of the illuminating elements.
- Electrical appliance according to any of the preceding claims, characterized in that the display device (11, 111) has one single cover, wherein the cover preferably extends continuously above the illuminating elements and covers in particular at least 50 % of the surface area of the component support.
- Electrical appliance according to any of the preceding claims, characterized in that the cover above the illuminating elements has a planar top side and/or a planar bottom side, preferably has a constant thickness.
- Electrical appliance according to any of the preceding claims, characterized in that the cover at least on two sides, preferably on opposite sides, is fixed to the component support and/or to the holding device for the component support, in particular fixed in a form-fitting manner, wherein it is preferably detachably fixed in a form-fitting manner by means of a latching or clamping connection produced self-actingly when placed on.
- Electrical appliance according to claim 8, characterized in that the cover has a downwards drawn edge extending along at least two sides, in particular up to below the component support, preferably with fastening means for the latching or clamping connection.
- Electrical appliance according to any of the preceding claims, characterized in that the cover includes silicone or is composed of silicone, preferably exhibiting a hardness of 50 to 70 Shore (A), in particular 60 Shore (A).
- Electrical appliance according to any of the preceding claims, characterized in that a capacitive sensor element is disposed on the top side of an illuminating element or disposed thereon on the top, wherein preferably the capacitive sensor element is disposed laterally besides the luminous top side and surrounds the luminous top side, respectively.
- Method for producing a display device (11, 111) of an electrical appliance (131) according to claim 3 or 4, characterized in that the opaque coating (23, 123) is applied to a luminous top side (16) of the illuminating element (15) or onto a top side and/or a bottom side of the cover (122), wherein during application of the opaque coating (23, 123) onto the luminous top side (16) or onto the cover (122) the sections (17, 117) are left blank directly.
- Method for producing a display device of an electrical appliance (131) according to claim 3 or 4, characterized in that the opaque coating (23, 123) is applied to a luminous top side (16) of the illuminating element (15) or onto a top side and/or a bottom side of the cover (122), wherein the sections (17, 117) are produced no sooner than after the application by removing the coating (23, 123).
- Method according to claim 13, characterized in that the coating (23, 123) for producing the sections (17, 117) is removed using radiation by laser, wherein preferably the coating (123) is applied to the top side of the cover (122) and after fixation of the cover (122) above the illuminating elements (115) and on the display device (111), respectively, the sections (117) are produced by removing the coating (123).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16184531T PL3136374T3 (en) | 2015-08-31 | 2016-08-17 | Display device for an electrical appliance, electrical appliance and method for producing this display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015216634.1A DE102015216634A1 (en) | 2015-08-31 | 2015-08-31 | Display device for an electrical appliance and electrical appliance |
DE102016200569.3A DE102016200569B4 (en) | 2016-01-18 | 2016-01-18 | Display device for an electrical device, electrical device and method for producing such a display device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3136374A1 EP3136374A1 (en) | 2017-03-01 |
EP3136374B1 true EP3136374B1 (en) | 2019-07-10 |
Family
ID=56801388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16184531.8A Active EP3136374B1 (en) | 2015-08-31 | 2016-08-17 | Display device for an electrical appliance, electrical appliance and method for producing this display device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3136374B1 (en) |
ES (1) | ES2747857T3 (en) |
PL (1) | PL3136374T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES1280677Y (en) | 2021-09-28 | 2022-01-28 | Eika S Coop | Display device adapted to an electrical appliance |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4104983C1 (en) | 1991-02-19 | 1992-03-12 | Schott Glaswerke, 6500 Mainz, De | |
DE4424847B4 (en) * | 1994-07-14 | 2004-07-29 | Schott Glas | Device for displaying information and operating states on cooking appliances |
DE19724992A1 (en) * | 1997-06-13 | 1998-12-17 | Aeg Hausgeraete Gmbh | Hob with vacuum fluorescent display for cooker |
DE102009036161B4 (en) | 2009-07-28 | 2017-01-12 | E.G.O. Elektro-Gerätebau GmbH | Sensor element device and method for producing a sensor element device |
EP2290292B1 (en) * | 2009-08-28 | 2016-07-13 | Electrolux Home Products Corporation N.V. | Cooking hob with display and single - piece display frame |
DE102013209849B4 (en) | 2013-05-27 | 2022-07-28 | E.G.O. Elektro-Gerätebau GmbH | control element |
CN104050890B (en) * | 2014-06-19 | 2017-09-29 | 福建省石狮市通达电器有限公司 | A kind of display panel for household electrical appliance |
CN204117515U (en) * | 2014-08-19 | 2015-01-21 | 深圳市奥拓电子股份有限公司 | A kind of LED module |
-
2016
- 2016-08-17 ES ES16184531T patent/ES2747857T3/en active Active
- 2016-08-17 EP EP16184531.8A patent/EP3136374B1/en active Active
- 2016-08-17 PL PL16184531T patent/PL3136374T3/en unknown
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Also Published As
Publication number | Publication date |
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PL3136374T3 (en) | 2020-01-31 |
ES2747857T3 (en) | 2020-03-11 |
EP3136374A1 (en) | 2017-03-01 |
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