DE102008012602A1 - Switching device, household appliance with switch device and method for displaying the power state of a domestic appliance - Google Patents

Abstract

A switch device (100, 100 ') for a household appliance, comprising - at least one switch shaft (10) designed to regulate at least one power of the household appliance, which extends from the outside of the domestic appliance into an interior of the domestic appliance, - at least one on the outside the household appliance visible and at least partially around the switch shaft (10) arranged power range marking (30; 30 '; 30' '), which represents the size range of means of the switch shaft (10) adjustable power, and - at least one arranged in the interior of the household appliance lighting device ( 61, 62, 63, 64, 65, 66) for illuminating the power area marker (30, 30 ', 30 ") so as to more accurately and more easily regulate the performance of the household appliance, such as a hob, oven or oven It is proposed to have at least one indicator (40) for displaying the by means of change n the power state of the household appliance set the position or orientation of the switch shaft (10) on the switch shaft (10), - that the indicator (40) moves with a change in the position or orientation of the switch shaft (10) and - Indicator (40) in each case in the beam path of the of the illumination device (61, 62, 63, 64, 65, 66) for the current position or orientation of the switch shaft (10) associated with the region (50) of the ...

Description

Technical area

The The present invention relates to a switch device according to the The preamble of claim 1 and a household appliance, in particular a Hotplate, oven or stove, preferably a gas hob, a gas oven or a gas stove, with such a switch device. Hereinafter, the term cooker is a combination of hotplate and oven called. The term hotplate includes in particular the terms hob, hob and hob.

The The present invention further relates to a method according to the The preamble of claim 18.

State of the art

Usually, the power state of a cooker is indicated by the position of the rotary switch or rotary knob designed to operate the hob or the oven. It can, as in the pamphlets DE 1 274 307 A . DE 1 846 780 U and DE 2 204 557 A discloses the position of the rotary switch are numerically displayed in a display panel. In these known rotary switches, a circular disk with numbers is attached to a switching shaft of a rotary switch arranged in the hearth. Depending on the position of the rotary switch, a certain number is visible in a display field of the rotary switch or in a display field of an otherwise opaque strip of the cooker. Alternatively, the numerical power state indicator can also be done by means of a rotary switch associated seven-segment display, which represents approximately the heating power of the cooking area in numbers from zero to nine. However, only the current setting of the rotary switch can be read in these known cooking stations with numerical power status display.

Furthermore, the power state of a cooker can also be displayed by means of power status symbols, for example by means of points or by means of a scale arranged around the rotary handle. Such a performance status marking is for example from the document DE 1 846 780 U known. This power state marker is illuminated from the inside of the cooker. For regulating the hearth power, a position mark arranged on the rotary switch, for example a point arranged on the rotary handle, is aligned with the corresponding power status symbol arranged around the rotary switch. A disadvantage of this known rotary switch, however, is that due to the relatively large distance between the position marker and arranged around the rotary switch power status symbols an accurate reading of the position of the rotary switch and thus an accurate regulation of the rotary switch is difficult.

A rotary switch according to the preamble of claim 1 is known from the document DE 33 45 312 C2 known. The operating and display member of this rotary switch consists of a serving for the position marking of the rotary switch window of the rotary knob grip part and a rotary knob grip part surrounding scale ring part. The window of the rotary switch is illuminated from the inside of the device. To make it easier to detect whether the rotary switch is on or off, the rotary switch a colored translucent panel is mounted, which is arranged in the zero position of the rotary switch in front of the lamp designed to illuminate the window. The aperture thus causes the window of the rotary knob handle part is illuminated in the zero position of this rotary switch colored and attenuated. The disadvantage, however, is that even with this rotary switch, the position marker or the window has a relatively large distance to the SET mention mark of the scale ring part, so that a precise regulation of the rotary switch is difficult.

DESCRIPTION OF THE INVENTION: Problem, Solution, advantages

outgoing from the disadvantages and shortcomings set out above and in appreciation of the state of the art outlined The present invention is based on the object, a switch device of the type mentioned, a household appliance of the beginning mentioned type and a method of the type mentioned above educate that the performance of the household appliance, for example a hotplate, an oven or a stove, more precisely and easier to regulate.

These The object is achieved by a switch device with the in the claim 1 specified characteristics, by a household appliance with the in claim 17 specified characteristics and by a method with solved the features specified in claim 18. advantageous Embodiments and expedient developments The present invention is defined in the subclaims characterized.

Thus, the present invention is based on the fact that a lighted indicator is located respectively in, in particular below or above and / or directly next to, the area of the power area marking, which is assigned to the current position or orientation of the switch shaft. By means of the illuminated indicator can the current power state of the household appliance, thus accurately displayed. By illuminating the indicator readability is possible even in unfavorable lighting conditions.

The associated with the positions or orientations of the switch shaft Areas of the performance area marking can be determined by means of Performance status icons are highlighted. Such power status symbols For example, numbers, stroke marks, dot marks, at least one threshold arrow or different sized ones Be gas flames. By means of the invention Switching device, the indicator is exactly on or next to the power status icon directed. Thus, a more accurate setting the switch device as possible with a rotary switch according to the prior art, its position or Aligned by one on the rotary switch and spaced from the Performance status icon arranged dot or window marked becomes.

advantageously, the indicator is adapted to that of the illumination device At least partially filtered light and / or at least hide in some areas. For example, the indicator may at least a color filter that is only light of at least one particular color lets happen or the light of at least one particular Color filters out, so a color shift of the indicator passing light causes. Thus, by means of the indicator the one associated with the current position or orientation of the switch shaft Range, such as the current position or orientation the switch shaft associated power status symbol, color be marked. In principle, the indicator can be the light in which Beam path it is located, in any color or even multicolored colorize. The area indicated by the indicator should differ only by the color of the remaining performance area marker differ.

According to one particularly preferred embodiment is the indicator designed to let only blue light pass, that is the Area to which the indicator is directed to stain blue. The rest Performance markers, on the other hand, are colorless, for example illuminated with colorless light. This is particularly advantageous Blue coloration when the switch device for regulating the Power of a stove, such as a gas stove, serves. Since cooking usually is not blue, the blue light is still there clearly visible if the cooker is soiled with food.

Independently hereof or in connection therewith, the indicator may be at least a diaphragm, for example at least one pinhole. To this For example, the indicator caused by the indicator may be pronounced as a light beam or as a point of light, the assigned to the position or orientation of the switch shaft Area of the service area marking, ie the set Power level, shows.

Of the Indicator is advantageously dimensioned so that it only one Area of the service area marking. The narrower the area marked by the indicator is the more accurate the orientation or position of the switch shaft and thus the setting the power regulated by the switch shaft is displayed. For example For example, the indicator may be dimensioned to be approximately one maximum one-fifth, or a maximum of one-tenth of the performance range mark identifies or marks. Alternatively, the indicator can also be formed in the manner of a fan, in the movement the switch shaft is fanned out or pushed together.

there the indicator may be an indicator in its entirety Area, for example a trained as an indicator Pointer, about a colored plastic strip, his.

alternative the indicator may have at least one indicator area otherwise completely transparent and arranged around the switch shaft surface, for example a disc arranged around the switch shaft.

To the Protection against damage is the indicator advantageously between the power area marker and the lighting device in the Interior of the household appliance arranged. Alternatively, you can the indicator but also on the outside of the household appliance over or be placed directly next to the performance area marker.

The illumination device is advantageously designed to illuminate the entire area of the power area marking. In order to obtain a uniform illumination of the power area marking, according to an advantageous embodiment, at least one diffuser for scattering the light emitted by the lighting device is arranged between the illumination device and the power area marking. The area of the diffuser is advantageously at least as large as the area of the power area marking. A diffuser extending over the entire area of the power area marker and disposed about the switch shaft may be fixedly attached to the switch apparatus. Thus, such a diffuser does not need to be moved with a change in the position or orientation of the switch shaft with this, because he anyway in every conceivable position or alignment of the switch shaft in the beam path of the light emitted from the illumination unit to the power band marking light.

Further The lighting device can provide a uniform Illumination of the area of the power area marking several, for example six, under the performance area mark or arranged around the switch shaft bulbs have.

The Switching device can be designed as a rotary switch, wherein the switch shaft for regulating the power of the household appliance is rotatable about its longitudinal axis. Here is the indicator advantageously arranged on the switch shaft such that he is at the rotational movement of the switch shaft with this around the Longitudinal axis of the switch shaft rotates. The indicator can but also be designed in the manner of a fan, the fanned out during the rotational movement of the switch shaft or is pushed together.

alternative can the switch device as a, for example in a Guiding displaced, switch be formed. In this Ausführungsbei game, the indicator is advantageously arranged on the switch shaft, that he is in the sliding movement the switch shaft moves with this.

The The present invention finally relates to the use at least one switch device according to the set forth above to regulate at least one performance of a household appliance, in particular for regulating the Gas supply of at least one gas burner of a gas stove.

Brief description of the drawings

As already discussed above, there are various possibilities for embodying and developing the teaching of the present invention in an advantageous manner. For this purpose, reference is made on the one hand to the claims subordinate to claim 1, on the other hand, further embodiments, features and advantages of the present invention, inter alia, by reference to the. By the 1 to 4 illustrated two embodiments explained in more detail.

It shows:

1 a perspective view of a first embodiment of a switch device according to the present invention, which operates according to the method according to the present invention and has a first embodiment of a power band mark;

2 in a perspective view of a plan view of the arranged on the outside of the household appliance area of the switch device 1 ;

3 in a perspective view of a plan view of the arranged on the outside of the household appliance area of the switch device 1 , wherein the orientation of the switch device of 3 compared to the orientation of the switch device 2 is changed;

4 a perspective view of the arranged on the outside of the household appliance portion of a second embodiment of a switch device according to the present invention, which operates according to the method according to the present invention and has a second embodiment of a power range marker; and

5 a third embodiment of a power range marker for a switch device 1 respectively. 4 ,

The same or similar embodiments, elements or features are in the 1 to 5 provided with identical reference numerals.

Best way to execute the invention

In order to avoid superfluous repetitions, the following explanations concerning the embodiments, features and advantages of the present invention (unless stated otherwise) relate both to those in the 1 to 3 illustrated switch device 100 as well as on in 4 illustrated switch device 100 ' ,

Im on the basis of 1 to 3 illustrated first embodiment of the present invention is a switch device 100 , namely a rotary switch for regulating a gas range, shown.

The switch device 100 serves to regulate the gas supply to a gas burner of the gas stove. For this purpose, a switch shaft rotatable about its longitudinal axis extends 10 from the outside of the gas range to the interior of the gas range. More specifically, the switch shaft extends 10 through a hob plate 20 a hotplate of the gas stove.

As in the 2 and 3 is shown, is for operating the switch shaft 10 on the outside of the gas stove a control knob 12 on the switch shaft 10 arranged.

At the hob plate 20 There is a first embodiment of a power range marker 30 that around the control knob 12 is arranged around and marks the size range of the means of the switch shaft adjustable gas supply. The performance area marker 30 So shows all possible orientations or positions of the switch shaft 10 or all possible power states of the gas range, wherein the marking range from the switch position in which the gas supply is interrupted or off, to the switch position in which the gas supply is completely turned on, extends.

In the in the 1 to 5 illustrated embodiments 100 . 100 ' a switch shaft is the power range marker 30 . 30 ' . 30 '' on a translucent surface 20 , namely arranged on a translucent hob plate made of glass ceramic or hard glass, such as a ceramic hob, the gas range. Specifically, the performance area marker 30 . 30 ' . 30 '' on the hob plate 20 applied, for example, printed, or in the hob plate 20 etched or baked.

As in particular from 1 can be seen in the 1 to 3 illustrated first embodiment of the power range marker 30 these from translucent areas of the hob plate 20 formed, where the the Leistungsbereichsmarkierung 30 surrounding areas of non-translucent preparation of the hob plate 20 are. This has the advantage of having the performance area mark 30 can be illuminated and thus a readability even in unfavorable lighting conditions is possible.

To illuminate the power range marker 30 is arranged in the interior of the gas stove, a lighting device. This lighting device consists in the 1 to 3 illustrated embodiment of six LEDs 61 . 62 . 63 . 64 . 65 . 66 which are so around the switch shaft 10 are arranged that they at every conceivable orientation or position of the switch shaft 10 the entire area of the performance area mark 30 illuminate.

Above the lighting device 61 . 62 . 63 . 64 . 65 . 66 is for scattering of the lighting device 61 . 62 . 63 . 64 . 65 . 66 emitted light a disc-shaped, the switch shaft 10 surrounding diffuser 70 arranged.

Between the diffuser 70 and the glass ceramic surface 20 is an indicator 40 , namely a blue plexiglass indicator, on the selector shaft 10 of the control knob 12 attached. This indicator 40 rotates when the position or orientation of the switch shaft changes 10 with the switching shaft 10 around its longitudinal axis. Thus, the indicator is located 40 each in the beam path of the illumination device 61 . 62 . 63 . 64 . 65 . 66 to the current position or orientation of the switch shaft 10 assigned area 50 the performance area mark 30 emitted light and characterized by means of aligning the switch shaft 10 set power state of the gas stove by a blue hob display 50 ,

When in the 1 to 3 illustrated embodiment is the indicator 40 So a blue plastic strip, from below or from the control knob 12 the opposite side is illuminated and an area 50 the performance area mark 30 turns blue when turned on it.

The performance area marker 30 can, as in the 1 to 3 illustrated, different power states and switch shaft alignments associated power state symbols 32 . 24 . 36 . 38 , depending on the heat output of the gas burner different sized gas flames have. By means of the indicator 40 is like in the 2 and 3 shown, a continuous indication of the power state of the gas range possible.

Alternatively, the performance area marker 30 ' , as in 4 represented, also consist of at least one, for example semicircular, dashed line marking. This performance area marker 30 ' can for example by a power condition numerically reproducing display 80 , be supplemented by a seven-segment display. Conveniently, the seven-segment display 80 from the lighting device 61 . 62 . 63 . 64 . 65 . 66 illuminated.

A third embodiment of a power range marker 30 '' is in 5 shown. In this embodiment, the means of the switch device 100 . 100 ' adjustable range of power of the household appliance marked by at least one threshold arrow. The thickness of the Schwellpfeils at a certain point symbolizes the setting of the switch device 100 . 100 ' in relation to the minimal 32 or maximum 36 adjustable power value.

As in the 2 to 4 can also be the control knob 12 at least in certain areas 14 . 16 from the lighting device 61 . 62 . 63 . 64 . 65 . 66 be illuminated. Advantageously, the indicator 40 in the beam path of the illumination device 61 . 62 . 63 . 64 . 65 . 66 to the control knob 12 emitted light, so that at least one area 14 . 16 of the control knob 12 in the same way as the current position or orientation of the switch shaft 10 zugeord Neten area 50 the performance area mark 30 is marked. In the in the 2 to 4 illustrated two embodiments of the switch device 100 . 100 For example, the order to catch 14 of the control knob 12 and a position marker 16 of the control knob 12 more precisely a light spot visible on the control knob, illuminated with blue light.

The control knob 12 Advantageously, in its non-illuminated areas chen on a color and / or a material that or a strong contrast to the illuminated areas 14 . 16 and thus differs well from these. For example, the non-illuminated area of the control knob 12 be bright and shiny, about stainless steel. Alternatively, the non-illuminated area of the control knob 12 also be dark, about black colored.

The in the 1 to 4 illustrated two embodiments 100 . 100 ' A switch device according to the present invention differs from the prior art in that the power state of a gas appliance, namely a gas range, by means of an electrically illuminated switch device 100 . 100 ' is displayed exactly.

The illustrated switch devices 100 . 100 ' differ from the prior art in that at the switch shaft 10 under the performance area mark 30 . 30 ' . 30 '' a translucent, with the switch shaft 10 movable indicator 40 is arranged to the exact position or orientation of the switch shaft 10 or the exact power state of the means of the switch shaft 10 to display regulated performance. This power status indication is effected by means of a color shift, namely a blue color, of the indicator 40 passing light. Advantageously, the means of the indicator 40 marked area 50 blue, whereas the rest of the performance area marking 30 . 30 ' . 30 '' illuminated with colorless light.

Furthermore, the illustrated embodiments differ 100 . 100 ' from the prior art in that the power range marking 30 . 30 ' . 30 '' from non-printed, translucent and from the lighting device 61 . 62 . 63 . 64 . 65 . 66 Illuminated areas of one around the performance area marker 30 . 30 ' . 30 '' around printed cooktop 20 , namely a printed hob plate made of hard glass or glass ceramic, is formed.

Another distinguishing feature of the prior art is that between the power band marking 30 . 30 ' . 30 '' and the lighting device 61 . 62 . 63 . 64 . 65 . 66 arranged diffuser 70 , which provides a uniform illumination of the power band marking 30 . 30 ' . 30 '' allows.

The illustrated illumination device differs from the prior art in that it includes several under the power range marker 30 . 30 ' . 30 '' having arranged light-emitting diodes.

By means of the rotary switch described above 100 . 100 ' For example, the performance of the gas range can be regulated much more accurately and easily than with conventional rotary switches.

100

Switch device, in particular rotary switch (first embodiment, cf. 1 to 3 )

100 '

Switch device, in particular rotary switch (second embodiment, cf. 4 )

10

switch shaft

12

Control element, in particular control knob of the switch shaft 10

14

Scope of the control element 12

16

Position marker, in particular light spot, of the operating element 12

20

at least partially transparent surface of the household appliance, in particular front surface or hob plate, for example Glass ceramic plate or hard glass plate

30

Power band marking of the switch device 100 (first embodiment, cf. 1 to 3 )

32

first Marking a power state of the household appliance, in particular first power status symbol

34

second Marking a power state of the household appliance, in particular second performance status symbol

36

third Marking a power state of the household appliance, in particular third power status symbol

38

fourth Marking a power state of the household appliance, in particular fourth power status symbol

30 '

Power band marking of the switch device 100 ' (second embodiment, cf. 4 )

30 ''

Power band marking of the switch device 100 ' (Third embodiment, cf. 5 )

40

Indicator means, in particular illuminated pointer

50

by means of the indicator device 40 identification of the orientation of the switch shaft 10 assigned area of the performance area marker 30 ; 30 '

61

first Illuminant of the illumination device, in particular first light-emitting diode (LED)

62

second Illuminant of the illumination device, in particular second light-emitting diode (LED)

63

third Illuminant of the illumination device, in particular third light-emitting diode (LED)

64

fourth Illuminant of the illumination device, in particular fourth light-emitting diode (LED)

65

fifth Illuminant of the illumination device, in particular fifth LED (LED)

66

sixth Illuminant of the illumination device, in particular the sixth light-emitting diode (LED)

70

diffuser

80

numeric Power state indicator, for example, seven-segment display

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 1274307 A [0003]
• - DE 1846780 U [0003, 0004]
• DE 2204557 A [0003]
• - DE 3345312 C2 [0005]

Claims (18)

Switching device ( 100 ; 100 ' ) for a household appliance, having - at least one switch shaft designed to regulate at least one power of the household appliance ( 10 ), which extends from the outside of the household appliance into an interior of the household appliance, - at least one visible on the outside of the household appliance and at least partially around the switch shaft ( 10 ) arranged power range marking ( 30 ; 30 '; 30 '' ), the size range of the means of the switch shaft ( 10 ) represents adjustable power, and - at least one arranged in the interior of the household appliance lighting device ( 61 . 62 . 63 . 64 . 65 . 66 ) for illuminating the performance area marker ( 30 ; 30 '; 30 '' ) characterized by at least one indicator ( 40 ) for displaying the by means of changing the position or orientation of the switch shaft ( 10 ) power state of the household appliance, the indicator ( 40 ) so on the switch shaft ( 10 ) is arranged, that it changes when the position or orientation of the switch ( 10 ) moved with this and - that he in each case in the beam path of the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) to the current position or orientation of the switch shaft ( 10 ) assigned area ( 50 ) of the service area marking ( 30 ; 30 '; 30 '' ) emitted light is located. Switching device according to claim 1, characterized in that the indicator ( 40 ) is adapted to that of the lighting device ( 61 . 62 . 63 . 64 . 65 . 66 ) light emitted at least partially and / or at least partially hide. Switching device according to claim 2, characterized in that the indicator ( 40 ) is at least one color filter that lets only light of at least one color pass or the light of at least one color filters out. Switching device according to claim 3, characterized in that the indicator ( 40 ) is designed to let only blue light pass. Switching device according to at least one of claims 2 to 4, characterized in that the indicator ( 40 ) is at least one aperture, for example, at least one pinhole. Switching device according to at least one of claims 1 to 5, characterized in that the indicator ( 40 ) - one in its entirety as an indicator ( 40 ), for example, an indicator ( 40 ) trained pointer, or is - at least one area formed as an indicator, which is otherwise completely transparent and around the switch shaft ( 10 ) arranged surface, for example one around the switch shaft ( 10 ) arranged disc, is assigned. Switching device according to at least one of claims 1 to 6, characterized in that the indicator ( 40 ) between the performance area marker ( 30 ; 30 '; 30 '' ) and the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) is arranged. Switching device according to at least one of claims 1 to 7, characterized in that between the power range marking ( 30 ; 30 '; 30 '' ) and the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) at least one diffuser ( 70 ) for scattering of the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) emitted light is arranged. Switching device according to claim 8, characterized in that the diffuser ( 70 ) - between the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) and the indicator ( 40 ) is arranged and / or - on the switch shaft ( 10 ) is arranged that the diffuser ( 70 ) during a movement of the switch shaft ( 10 ) for regulating the power of the household appliance not with the switch shaft ( 10 ) moved. Switching device according to at least one of claims 1 to 9, characterized in that - the switch shaft ( 10 ) is rotatable about its longitudinal axis for regulating the power of the household appliance and - that the indicator ( 40 ) so on the switch shaft ( 10 ) is arranged so that it is in a rotational movement of the switch shaft ( 10 ) with this about the longitudinal axis of the switch shaft ( 10 ) turns. Switching device according to at least one of claims 1 to 10, characterized in that - the switch shaft ( 10 ) by at least one at least partially translucent surface ( 20 ) extends from the outside of the household appliance into an interior of the household appliance and that - the power area marking ( 30 ; 30 '; 30 '' ) at the at least partially translucent surface ( 20 ), the performance area markings ( 30 ; 30 '; 30 '' ) are translucent and that the power band marks ( 30 ; 30 '; 30 '' ) surrounding areas are not translucent. Switching device according to at least one of claims 1 to 11, characterized in that the switch shaft ( 10 ) through a hob plate ( 20 ) a cooking place vorzusgsweise a gas hob extends. Switching device according to claim 12, characterized in that the power range marker ( 30 ; 30 '; 30 '' ) on the hob plate ( 20 ) is arranged. Switching device according to claim 12 or 13, characterized in that the hob plate ( 20 ) is formed essentially of glass ceramic or substantially of hard glass. Switching device according to at least one of claims 1 to 14, characterized in that the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) - at least two bulbs, for example, six LEDs, and / or - so around the switch shaft ( 10 ) is arranged to cover the entire performance area marker ( 30 ; 30 '; 30 '' ) illuminated. Use of at least one switch device according to at least one of the claims 1 to 15 for regulating at least one power of a household appliance, in particular for regulating the gas supply to at least one gas burner a gas hob, a gas oven or a gas cooker. Domestic appliance, in particular hob, oven or stove, for example, gas hob, gas oven or gas stove, comprising at least one switch device ( 100 ; 100 ' ) according to any one of claims 1 to 15. Method for indicating the position by means of changing the position or alignment of at least one switch shaft ( 10 ) set power state of a household appliance, wherein at least one visible on the outside of the household appliance and at least partially around the switch shaft ( 10 ) arranged power range marking ( 30 ; 30 '; 30 '' ), the size range of the means of the switch shaft ( 10 ) adjustable power, of at least one arranged in the interior of the household appliance lighting device ( 61 . 62 . 63 . 64 . 65 . 66 ) is illuminated, characterized in that at least one of the switch shaft ( 10 ) arranged indicator for displaying the power state of the household appliance ( 40 ) - when changing the position or orientation of the switch shaft ( 10 ) with the switch shaft ( 10 ) is moved and - in the beam path of the illumination device ( 61 . 62 . 63 . 64 . 65 . 66 ) to the current position or orientation of the switch shaft ( 10 ) assigned area ( 50 ) of the service area marking ( 30 ; 30 '; 30 '' ) emitted light is arranged.