EP2172958B1 - Household device - Google Patents

Description

The invention relates to a domestic appliance device according to the preamble of claim 1.

From the DE 10 2006 034 598 A1 a device with a rotatably mounted actuating means is known. In a receiving area of the actuating means, an ultraviolet light emitting diode is arranged, which irradiates during operation of the device digits, which are printed on a control panel. Due to the illumination of the numbers, the numbers emit visible light.

The object of the invention is in particular to provide a generic device with improved properties in terms of ease of use. The object is achieved by the features of claim 1 and the additional claims, while advantageous embodiments and refinements of the invention can be taken from the dependent claims.

The invention relates to a domestic appliance device with at least one operating unit, which emits light in at least one operating operation.

It is proposed that the operating unit has at least one fluorescent subregion. A "fluorescent" subregion is to be understood as meaning in particular a subregion with particles which each have at least one electron which can be excited by electromagnetic waves and in particular by UV light from a first quantum mechanical state into at least one energy-rich quantum mechanical state. The more energetic quantum mechanical state in this case has an average life of less than half a second, in particular less than a tenth of a second, advantageously less than a hundredth of a second, preferably less than a millisecond, more preferably less than one microsecond and most preferably from less than fifty nanoseconds. In particular, a transition of the electron from the more energetic quantum mechanical state into the first quantum mechanical state is spin-allowed and In particular, the transition of the electron from the more energetic quantum mechanical state into the first quantum mechanical state occurs directly and not via a quantum mechanical intermediate state, which is in particular a metastable state. By assuming that a transition from the higher-energy quantum-mechanical state to the first quantum-mechanical state is "spin-allowed", it should be understood in particular that a total spin of the particle in the higher-energy quantum-mechanical state and a total spin of the particle in the first quantum-mechanical state are identical and / or that a total spin of unpaired electrons of the particle in the more energetic quantum mechanical state and a total spin of unpaired electrons of the particle in the first quantum mechanical state are identical. With an embodiment according to the invention a comfortable operation can be achieved. In particular, a comfortable readability of an operating mode or a temperature setting can be achieved.
It is also proposed that the operating unit has at least one rotatably mounted operating means, which comprises a lighting means. As a result, high functionality can be achieved. In particular, a simple readability of an operating information can be achieved.

verstanden werden, wobei unter " S ²" ein Quadrat des Poynting-Vektors von von dem Beleuchtungsmittel abgestrahlten Feldern und unter "S" der auf den Betrag Eins normierte Poynting-Vektor verstanden werden soll. Ferner soll hierbei unter $ʺ\underset{\mathit{Kugeloberfl}\ddot{\mathit{a}}\mathit{che}}{\int }\mathit{doʺ}$

ein Oberflächenintegral über eine Kugeloberfläche verstanden werden, durch welche eine gesamte von dem Beleuchtungsmittel emittierte Strahlung propagiert und deren Mittelpunkt in einem Mittelpunkt desjenigen Bereichs des Beleuchtungsmittels liegt, welcher bei einem Betrieb Licht emittiert. Außerdem soll unter den Klammern zu "〈...〉" eine zeitliche Mittelung des von den Klammern eingeschlossenen Ausdrucks über eine Sekunde verstanden werden soll. Unter einer "radialen Richtung" des Bedienmittels soll insbesondere eine Richtung verstanden werden, welche senkrecht zu einer Drehachse des Bedienmittels verläuft. Unter einer zu der durchschnittlichen Abstrahlrichtung "nächstliegenden" radialen Richtung soll insbesondere eine radiale Richtung verstanden werden, welche mit der durchschnittlichen Abstrahlrichtung in einem Vergleich zu anderen radialen Richtungen des Bedienmittels einen minimalen Winkel einschließt. Darunter, dass eine erste Richtung schräg zu einer zweiten Richtung verläuft, soll insbesondere verstanden werden, dass die erste Richtung und die zweite Richtung nur Winkel einschließen, welche größer als fünf Grad, insbesondere größer als zehn Grad, vorteilhafterweise größer als zwanzig Grad und besonders bevorzugt größer als fünfundzwanzig Grad sind. Hierdurch kann eine einfache Konstruktion erreicht werden. Insbesondere können auf einer Blende aufgedruckte Bediensymbole einfach und insbesondere ohne eine Umlenkung von Licht beleuchtet werden.
Mit Vorteil weist das Bedienmittel eine intransparente Frontseite auf. Darunter, dass die Frontseite "intransparent" ist, soll insbesondere verstanden werden, dass die Frontseite für Licht mit einer Wellenlänge, welche in einem für Menschen sichtbaren Wellenlängenbereich liegt, undurchlässig ist. Unter einer "Frontseite" des Bedienmittels soll insbesondere eine Seite des Bedienmittels verstanden werden, welche bei einer Frontalansicht auf das Bedienmittel vollständig sichtbar ist. Auf diese Weise kann eine kostengünstige Ausbildung erreicht werden.
Außerdem wird vorgeschlagen, dass das Beleuchtungsmittel bei wenigstens einem Betriebsvorgang durch eine Beleuchtung des fluoreszierenden Teilbereichs einen Farbwechsel des Teilbereichs bewirkt. Hierdurch kann eine komfortable Ablesbarkeit eines Betriebszustands erreicht werden.The illumination means has an average emission direction, which runs obliquely to a nearest radial direction of the operating means. In particular, a direction of a vector is intended to mean an "average emission direction" $<\underset{\mathit{Kugeloberfl}\ddot{a}\mathit{chel}}{\int }\sqrt{{\overrightarrow{S}}^2}\hat{S}\mathit{do}>$

be understood, with " S ² "should be understood to be a square of the Poynting vector of fields radiated by the illumination means and" S "of the Poynting vector normalized to the value one $"\underset{\mathit{Kugeloberfl}\ddot{\mathit{a}}\mathit{che}}{\int }\mathit{do}$

a surface integral can be understood via a spherical surface through which propagates a total of the radiation emitted by the illumination means and the center of which lies at a center of the region of the illumination means which emits light during operation. In addition, the parentheses to "<...>" should be understood to mean a time averaging of the term enclosed by the parentheses over one second. Under a "radial direction" of the operating means should in particular, be understood a direction which is perpendicular to a rotation axis of the operating means. A radial direction "nearest" to the average emission direction is to be understood in particular to mean a radial direction which includes a minimum angle with the average emission direction in comparison to other radial directions of the operating means. By assuming that a first direction runs obliquely to a second direction, it should be understood in particular that the first direction and the second direction include only angles which are greater than five degrees, in particular greater than ten degrees, advantageously greater than twenty degrees and particularly preferred are greater than twenty-five degrees. As a result, a simple construction can be achieved. In particular, operating symbols printed on a panel can be illuminated simply and in particular without a deflection of light.
Advantageously, the operating means has a non-transparent front side. By referring to the face being "non-transparent", it should be understood, in particular, that the face is opaque to light having a wavelength which is within a wavelength range visible to humans. A "front side" of the operating means is to be understood in particular a side of the operating means, which is completely visible in a frontal view of the operating means. In this way, a cost-effective training can be achieved.
In addition, it is proposed that the illumination means cause a color change of the subregion in at least one operating operation by illuminating the fluorescent subregion. As a result, a comfortable readability of an operating state can be achieved.

The operating means has at least one insert, which is arranged in at least one operating operation in a beam path of the illumination means. A "use" of the operating means should be understood in particular at least one component which is at least partially disposed in a receiving area of the operating means. This allows a simple installation can be achieved. In particular, a transparent part can be easily added to an opaque part of an operating means. A cost effective design of the insert can be achieved if the insert substantially traverses the beam path during the operation lets pass unchanged. Assuming that the insert allows the beam path to pass "essentially" unchanged, it should be understood in particular that at least seventy percent of all directions of propagation which emit photons emitted by the illumination means during an operation and passing through the application are less than fifteen degrees, advantageously less than eight degrees, and more preferably less than three degrees change through use.

In a preferred embodiment of the invention, the operating means has at least one side over which the insert extends at least in large part along a width extension and / or a longitudinal extension of the side. By the fact that the insert extends "largely" along a width extension and / or a longitudinal extension of the side, it should be understood in particular that the insert is at least fifty percent, advantageously at least seventy percent, and more preferably at least ninety percent maximum maximum extension and / or a maximum longitudinal extent of the page extends. This allows a clear operation can be achieved. In particular, a large extent of a portion of the insert can be achieved, which is traversed in at least one operation of rays of the illuminant. A particularly clear operability can be achieved if the insert along a rotation axis of the operating means has a taper, whereby the insert can in particular form an index mark.

It is also proposed that the insert has a T-shaped contour in at least one operating state in at least one view. In this way, a structurally simple design can be achieved with a clear operation.

Advantageously, the operating means on a front surface, which is formed zeilieittellos. A "front surface" of the operating means should be understood to mean in particular a surface of the operating means which is completely visible in a frontal view of the operating means. Under the fact that the front surface is formed "zeiemittellos" should be understood in particular that the front surface is free of symbols and formations that point to an operating icon and / or mark the control icon. Hereby, a simple construction can be achieved.

The fluorescent subregion preferably forms at least one operating symbol. A "control symbol" is to be understood in particular as meaning a character and / or a geometrical object which is intended to identify an operating mode and / or a characteristic of the operating state. By "intended" is intended to be understood in particular specifically designed and / or specially equipped. As a result, a particularly comfortable operation can be achieved. In particular, a high contrast of the operating symbol can be achieved relative to an area surrounding the operating symbol.

Furthermore, it is proposed that the operating means emits mainly invisible light in at least one operation. Under "invisible" light in particular UV light and / or infrared light should be verstranden. In this way, a particularly clear readability of an operating information can be achieved. In particular, a high contrast of the operating symbol can be achieved relative to an area surrounding the operating symbol.

Preferably, the insert forms an index mark, whereby components can be saved.

A low-cost training can be achieved if the illumination means is formed by a UV LED.

A particularly high operating comfort can be achieved if the operating means is at least partially retractable in a control panel.

Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1

eine dreidimensionale Ansicht einer Hausgerätvorrichtung mit einem Bedienmittel,

Fig. 2

eine dreidimensionale Ansicht eines Beleuchtungsmittels des Bedienmittels und einer Blendenoberfläche, wobei eine Position des Bedienmittels angedeutet wurde,

Fig. 2A

eine Seitenansicht auf das Beleuchtungsmittel senkrecht zu einer Drehachse, um welche das Bedienmittel drehbar ist,

Fig. 3

eine Draufsicht auf eine Oberseite des Bedienmittels, welche einen Einsatz aufweist, und

Fig. 4

ein als Backofen ausgebildetes Hausgerät mit einer erfindungsgemäßen Hausgerätvorrichtung.

Show it:

Fig. 1

3 shows a three-dimensional view of a domestic appliance device with an operating means,

Fig. 2

a three-dimensional view of a lighting means of the operating means and a diaphragm surface, wherein a position of the operating means has been indicated,

Fig. 2A

a side view of the illumination means perpendicular to a rotation axis about which the operating means is rotatable,

Fig. 3

a plan view of an upper side of the operating means, which has an insert, and

Fig. 4

a trained as an oven domestic appliance with a domestic appliance device according to the invention.

The FIGS. 1 and 2 show a domestic appliance device according to the invention with an operating unit 10, which has a fluorescent portion 12 and a rotatably mounted operating means 14. The operating means 14 comprises a lighting means 16, which is designed as a UV light-emitting diode. When using the operating means 14, the illumination means 16 illuminates the fluorescent portion 12, whereby electrons of the portion are raised to a higher energy level in comparison to their ground state and then return to the ground state by spontaneous emission, wherein photons are emitted. During operation of the illumination means 16, a majority of the photons emitted by the illumination means 16 have a wavelength which is in the UV range.

The fluorescent sub-area 12 forms an operating symbol 40. The operating symbol is formed as a rectangle, which has a white color in daylight illumination in which no light of the illumination means 16 strikes the sub-area 12. If the partial area 12 is illuminated by the illumination means 16, then it has a red color. In principle, it is also conceivable that the partial area 12 alternatively or additionally has colors other than white and red in an illuminated and / or unlit state.

The operating means 14 is rotatably mounted about an axis of rotation 32, which runs perpendicular to a diaphragm surface 42 of the domestic appliance device. An average emission direction 18 of the illumination means 16 encloses an angle 44 of twenty degrees with a radial direction 20 closest to the emission direction 18. The nearest radial direction 20 is that direction which can be constructed by a parallel projection of the emission direction 18 parallel to the axis of rotation 32 on a perpendicular to the axis of rotation 32 extending plane. In an operation of the illumination means 16, the illumination means 16 mainly emits light substantially parallel to the emission direction 18. The light strikes partly on the subregion 12 which is arranged on the diaphragm surface 42.
FIG. 2A shows a side view of the illumination means 16 perpendicular to the axis of rotation 32, the nearest radial direction 20 and the emission direction 18. The radial direction 20 and the average emission direction 18 include the angle 44 a.
The operating means 14 has a front side 22, which is completely visible in a front view of the domestic appliance device along the axis of rotation 32. The front 22 is formed of polybutylene terephthalate and is impermeable to visible light. An entire front surface of the front 22 is formed zeilieittellos and is also free of imprints.
Furthermore, the operating means 14 has an insert 24, which is arranged in an optical path 46 of the illumination means 16 during operation of the illumination means 16. The average radiation direction 18 intersects the insert 24, which is formed of polycarbonate. A propagation direction of photons emitted by the illumination means 16 is unchanged after traversing the insert 24.
FIG. 3 shows a view of an upper surface 48 of the operating means 14 along the radial direction 20. A portion 50 of the top 48, which has a T-shaped contour, is formed by the insert 24. A rear portion 52 of the part 50 has in a direction of rotation 54 about the axis of rotation 32 a longer maximum extent than a front portion 56. In this way, a reliable illumination of the operating icon 40 can be achieved. Furthermore, the partial area 56 forms an index mark. The partial region 52 has a smaller distance from the diaphragm surface 42 than the partial region 56. The partial regions 52 and 56 are directly behind one another along the axis of rotation 32 arranged, whereby the partial regions 52, 56 form a taper of the insert 24 along the axis of rotation 32. Furthermore, both subregions 52, 56 are rectangular.

The top 48 is identical to a side 26 of the operating means 14, via which the insert 24 extends over a maximum width extent 28 of the side 26 parallel to the direction of rotation 54. In addition, the insert extends over a maximum longitudinal extent 30 of the side 26 along the axis of rotation 32.

The operating unit 10 also has further fluorescent control symbols which are arranged on the diaphragm surface 42 along a circle which surrounds the operating means 14 ( FIGS. 1 and 2 ). The operating symbols indicate cooking temperatures. In principle, it is also conceivable that the operating symbols identify operating modes.

A side surface 58 of the operating means 14 adjoining the side 26 has an elongated curved surface 60. The surface 60 has a longitudinal direction that is parallel to the radial direction 20. Assuming that the surface 60 is "elongatedly curved", it is to be understood that the surface 60 has a curvature along a radial direction with respect to the axis of rotation 32 which is smaller than a curvature that is a circle along the direction of rotation 54 with a point the axis of rotation 32 as the center and with a radius which is equal to a distance of a point of the surface 60 to the axis of rotation has.

FIG. 4 shows a trained as an oven domestic appliance with a domestic appliance device according to the invention. The operating means 14 can be retracted by pressing the operating means 14 along the axis of rotation 32 in the diaphragm surface 42, so that only the front surface 38 is visible in an external view of the domestic appliance and the side 26 is disposed in an inner region of the domestic appliance.

reference numeral

10

operating unit

12

subregion

14

operating means

16

lighting means

18

radiation direction

20

direction

22

front

24

commitment

26

page

28

width extension

30

longitudinal extension

32

axis of rotation

34

rejuvenation

36

contour

38

front surface

40

operator symbol

42

aperture surface

44

angle

46

beam path

48

top

50

part

52

subregion

54

direction of rotation

56

subregion

58

side surface

60

surface

Claims (11)

1. Household device having at least one control unit (10) which emits light in at least one operational process, wherein the control unit (10) has at least one fluorescent sub-area (12) and at least one rotatably mounted control means (14) which comprises a light source (16), wherein the control means (14) has at least one insert (24) which during at least one operational process is arranged in a beam path (46) of the light source (16),
   characterised in that
   the light source (16) has an average direction of radiation (18) which runs obliquely to the nearest radial direction (20) of the control means (14), wherein the insert (24) allows the beam path to pass essentially unchanged during the operational process.
2. Household device according to claim 1,
   characterised in that
   the control means (14) has an opaque front side (22).
3. Household device according to one of the preceding claims,
   characterised in that
   the light source (16) brings about a change in colour of the sub-area (12) during at least one operational process by illumination of the fluorescent sub-area (12).
4. Household device according to one of the preceding claims,
   characterised in that
   the control means (14) has at least one side (26), over which the insert (24) extends at least in large part along a width extension (28) and/or a longitudinal extension (30) of the side (26).
5. Household device according to one of the preceding claims,
   characterised in that
   the insert (24) has a taper (34) along an axis of rotation (32) of the control means (14).
6. Household device according to one of the preceding claims,
   characterised in that
   the insert (24) has a T-shaped contour (36) in at least one operating state in at least one view.
7. Household device according to one of the preceding claims,
   characterised in that
   the control means (14) has a front surface (38) which is designed to be free of indicators.
8. Household device according to one of the preceding claims,
   characterised in that
   the fluorescent sub-area (12) forms at least one control icon (40).
9. Household device according to one of the preceding claims,
   characterised in that
   the control means (14) emits predominantly invisible light during at least one operational process.
10. Household appliance, in particular a baking oven, having a household device according to one of claims 1 to 9.
11. Household appliance method, in particular having a household device according to one of claims 1 to 9, wherein at least one fluorescent sub-area (12) of a control unit (10) is illuminated, wherein during at least one operational process at least one insert (24) of at least one rotatably mounted control means (14) of the control unit (10) is arranged in a beam path (46) of a light source (16),
    characterised in that
    an average direction of radiation (18) of the light source (16) runs obliquely to the nearest radial direction (20) of the control means (14), wherein the insert (24) allows the beam path to pass essentially unchanged during the operational process.

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