DE102020121292B3 - Display instrument for displaying different scales, motor vehicle, method for operating a display instrument - Google Patents

Abstract

A display instrument (100) is proposed for displaying a first scale (10) or a second scale (20) having a dial (1) with the first scale (10) and the second scale (20), the display instrument (100) a first pointer (7.1), a second pointer (7.2) arranged between the first pointer (7.1) and the dial (1) and a clockwork (8), the second pointer (7.2) for displaying information on the first scale (10) can be brought into engagement with an output (8.1) of the clockwork (8) and, in order to display information on the second scale (20), the output (8.1) can be mechanically decoupled and brought into engagement with the first pointer (7.1) . A motor vehicle (200) and a method are also proposed.

Description

The present invention relates to a display instrument for displaying different scales, a motor vehicle and a method for operating a display instrument.

The driver of a motor vehicle needs a large amount of information, which is typically made available to him by display instruments in the cockpit of the motor vehicle. This is information that is necessary for safe driving of a motor vehicle or that simply offers more comfort, such as speed, time, outside temperature, daily distance traveled, lap times or the direction of the compass.

Analog display instruments are particularly intuitive, easy and quick to read. However, if a large amount of information is made available to the driver with analog display instruments, the vehicle interior appears confusing, which can lead to the driver being distracted from the traffic.

Analog display instruments are known from the prior art, which are able to display the time, lap times or the direction of the compass, for example with different scales, as desired.

So are from the pamphlets DE 10 2014 103 267 A1 and DE 10 2019 100 899 A1 Analog vehicle instrument clusters are known in which, to display the time, a compass or a stopwatch, pointers of the vehicle instrument clusters are operated independently of one another or are brought into engagement with one another. The pamphlet DE 10 2019 100 899 A1 also discloses the twisting of two cover disks to display different scales.

It is an object of the present invention to provide a display instrument for displaying different scales which offers the possibility of reading the information displayed on the different scales particularly easily.

This object is achieved by a display instrument according to claim 1.

The display instrument according to the invention makes it possible, for example, to display the time on the first scale and to display information for which only one pointer has to be used on the second scale. This can be seconds for a stopwatch, for example. It is conceivable that the first pointer and the second pointer for displaying information on the second scale are arranged parallel to one another.

Advantageous refinements and developments of the invention can be found in the subclaims and the description with reference to the drawings.

According to the invention it is provided that the display instrument has a luminous unit and a filter disc with translucent areas arranged between the dial and the luminous unit, the filter disc being opaque outside the translucent areas, the first scale and the second scale translucent and the dial outside the scales is opaque,
wherein the display instrument has a drive for rotating the filter disk and a fixing element, wherein the fixing element can be brought into a locking position with engagement with the dial to prevent rotation of the dial and into a free position without engagement with the dial, wherein the display instrument has a slip clutch , wherein the slip clutch connects the filter disc to the dial in a rotationally fixed manner when the fixing element is in the free position and allows a rotation of the filter disc relative to the dial when the fixing element is in the locking position.

This makes it possible, by turning the filter disc and / or the dial, to bring the first scale or the second scale or preferably a third scale into congruence with the translucent areas so that the light unit illuminates one of the scales, which is then visible. The display instrument is preferably a round instrument. The dial preferably has a third scale. It is conceivable that more than three scales are provided.

It is conceivable that the dial are made of a plastic, a metal or a coated or colored glass. It is conceivable that the scales are recesses in the dial or are made of a transparent glass or a transparent plastic. It is also conceivable that the filter disk is made of a plastic, a metal or a coated or colored glass. It is conceivable that the translucent areas are cutouts or made of transparent glass or transparent plastic.

The scales are preferably designed in the form of numbers, letters, lines and / or other characters. For this purpose, it is conceivable that the respective digits, letters, lines and / or other characters are arranged in a fixed radius around an axis of rotation around which the The filter disc is rotated by the drive. For this purpose, it is preferably provided that the digits, letters, lines and / or other characters of the second scale are arranged counterclockwise with respect to the axis of rotation by a first angle to digits, letters, lines and / or other characters of the first scale, and preferably that the digits, letters, lines and / or other characters of the third scale are arranged clockwise with respect to the axis of rotation by a second angle to digits, letters, lines and / or other characters of the first scale. To this end, it would then be conceivable for the translucent areas to be arranged in order to display the first scale so that light can fall on a straight path from the lighting unit through the translucent areas and the first scale. For a change from the first scale to the second scale, it is conceivable that the fixing element is first placed in the blocking position and the drive rotates the filter disc so that light can fall in a straight line from the light unit through the translucent areas and the second scale. The slip clutch slips through and allows a relative rotation between the filter disc and the dial. In order to bring the second scale into a position that is easier to read, the fixing element is arranged in the free position. The slip clutch now connects the dial to the filter disc in a rotationally fixed manner, so that the drive can rotate the filter disc with the dial in such a way that the second scale is easy to read, for example so that one digit on the second scale is at the 12 o'clock position of the display instrument is arranged.

According to a preferred further embodiment of the invention it is provided that a main plane of extension of the dial and a main plane of extension of the filter disk and preferably a main plane of extension of the lighting unit are arranged parallel to one another. This enables optimal use of the installation space and short paths for the light from the lighting unit through the scales.

According to a further preferred embodiment of the invention it is provided that the drive is a drive for rotating the filter disk about an axis of rotation, the axis of rotation being arranged perpendicular to the main plane of extent of the filter disk. The axis of rotation is preferably arranged in the center of the dial.

According to a further preferred embodiment of the invention it is provided that the slip clutch has a rib structure and an engagement element, wherein the rib structure is non-rotatably connected to the dial and the engagement element is non-rotatably connected to the filter disc or the rib structure is non-rotatably connected to the filter disc and the engaging element is non-rotatably connected to the dial is connected, wherein the engagement element is preferably a spring element. The engagement element preferably has a nose which engages in the rib structure. It is conceivable that the engagement element is made of a plastic and / or a metal. It is also conceivable that the rib structure is made of a plastic and / or a metal.

According to a further preferred embodiment of the invention it is provided that the engagement element engages in the rib structure, the engagement element engaging in the rib structure in such a way that the filter disc and the dial are always arranged with respect to each other when engaging in the rib structure, so that light from the light unit on straight path through the translucent areas of the filter disc and through the first scale or the second scale can fall. This ensures that the dial and the filter disc are always correctly positioned with respect to one another. The filter disc engages in the correct positions when it is rotated relative to the dial.

According to a further preferred embodiment of the invention it is provided that the fixing element is moved towards the clock face for placing in the blocking position and is brought into engagement with a blocking element of the clock face and is moved away from the clock face for placing in the free position. The fixing element is therefore an axial coupling which can be closed or opened by moving in the axial direction. The axial direction here relates to the cylindrical shape of the elements of the dial, filter disk and light unit arranged one behind the other, these three elements preferably having an essentially round shape. The blocking element is preferably formed by fixing domes on the dial. The fixing element preferably has a fixing nose which engages the fixing dome of the dial in the locking position. By moving the fixing element towards the dial, that is, in the axial direction, the fixing lug is pushed between the fixing dome of the dial. This prevents the dial from rotating. By moving the fixing element away from the dial, the fixing lug is also pulled away from the fixing domes, so that there is no longer any engagement and the dial can be rotated. The fixing lug is preferably made from a metal or a plastic. The fixing domes are preferably made from a metal or a plastic.

According to a further preferred embodiment of the invention it is provided that the fixing element has an actuating element which is moved towards the first pointer when moving from the free position to the locked position, the actuating element the second pointer in the free position brought into engagement with the output of the clockwork, the adjusting element in the locked position mechanically decoupling the second pointer from the clockwork and bringing the first pointer into engagement with the second pointer. This makes it possible in an advantageous manner to influence the pointer with the aid of the fixing element and to control it depending on the use of the display instrument. The second pointer is preferably shorter than the first pointer. The first pointer is preferably in engagement with a second output of the clockwork.

According to a further preferred embodiment of the invention it is provided that the actuating element has a hollow shaft, with contact elements being arranged in the interior of the hollow shaft, which in the free position are in engagement with the output, a movement from the free position into the blocking position being a movement in the axial direction the hollow shaft and the contact elements are not in engagement with the output in the locking position. The contact elements are therefore arranged in the axial direction only along part of the hollow shaft, so that the movement of the hollow shaft in the axial direction can slide onto the output or from the output.

According to a further preferred embodiment of the invention it is provided that the second pointer is non-rotatably connected to the hollow shaft. This enables independent control of the first pointer and the second pointer with the fixing element.

According to a further preferred embodiment of the invention, it is provided that, in the blocking position, an end face of the hollow shaft is in engagement with the first pointer. The hollow shaft is pushed onto the first pointer in the locked position. It is thus advantageously possible to rotate the first pointer with the hollow shaft.

According to a further preferred embodiment of the invention it is provided that the drive has a toothed ring arranged on the filter disk and a gear wheel engaging the toothed ring. This allows the filter disc to be rotated safely and precisely.

According to a further preferred embodiment of the invention it is provided that the first scale is suitable for displaying the time on the display instrument and in particular represents the numbers 12, 3, 6 and 9, and the second scale is suitable for use of the display instrument as a stopwatch and in particular the Represents numbers 60, 15, 30 and 45 and that the dial preferably has a translucent third scale for displaying the compass direction on the display instrument, the third scale preferably representing the letters N, S, W and O or N, S, W and E, wherein the engagement element preferably engages in the rib structure in such a way that the filter disc and the dial are always arranged to each other when engaging in the rib structure, so that light from the light unit on a straight path through the translucent areas of the filter disc and through the first scale or the second scale or the third scale may fall. It is conceivable that when the third scale is displayed, the drive is used to always position the dial in such a way that the cardinal direction in the current direction of travel is indicated by the first pointer, with the first pointer and the second pointer in a 6 o'clock position are arranged.

According to a further preferred embodiment of the invention it is provided that the filter disk is ring-shaped, the lighting unit comprising a lighting ring. This enables homogeneous illumination. It is conceivable that the light ring is a light guide ring. For this purpose, it is conceivable that the display instrument has a light source, for example one or more LEDs, which are provided to illuminate the light guide ring. For this purpose, it is conceivable that the light guide ring is made from a plastic or a glass. It is also conceivable that the light source for illuminating the light guide ring is provided with a plurality of different colors. It would be conceivable that the light source is provided for illuminating the light guide ring with a first color when the first scale is displayed and that the light source is provided for illuminating the light guide disk with a second color when the second scale is displayed. It is conceivable that the dial, the filter disk, the light unit and preferably the clockwork are enclosed in a housing of the display instrument. It is conceivable that the display instrument has a further luminous ring for illuminating the scale ring. It is conceivable that the further light ring is a further light guide ring. For this purpose, it is conceivable that the display instrument has a further light source, for example one or more LEDs, which are provided to illuminate the further light guide ring. For this purpose, it is conceivable that the further light guide ring is made from a plastic or a glass. It is also conceivable that a further light source is provided for illuminating the further light guide ring with a plurality of different colors. It would be conceivable that the further light source is provided for illuminating the further light guide ring with a first color when the first scale is displayed and that the further light source is provided for illuminating the further light guide disk with a second color when the second scale is displayed .

According to a further preferred embodiment of the invention it is provided that the display instrument is intended for installation in a vehicle cockpit.

Another object of the invention for solving the object formulated at the beginning is a motor vehicle having a display instrument according to the invention.

Another object of the invention to solve the problem formulated at the beginning is a method for operating a display instrument according to the invention, the second pointer for displaying information on the first scale being coupled to the output of the clockwork, the second pointer for displaying information on the second scale is decoupled from the output of the clockwork and brought into engagement with the first pointer, wherein the first pointer and the second pointer are preferably set up parallel to each other for displaying information on the second scale.

According to a further preferred embodiment of the invention it is provided that to display the first scale, the filter disc is rotated so that the translucent areas allow light to fall in a straight line from the lighting unit through the translucent areas and through the first scale and whereby to Display of the second scale the filter disc is rotated so that the translucent areas allow light to fall in a straight line from the lighting unit through the translucent areas and through the second scale.

All the details, features and advantages previously disclosed in connection with the display instrument according to the invention also relate to the motor vehicle according to the invention and to the method according to the invention.

• 1 (a) - (c) illustrieren schematisch ein Anzeigeinstrument gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
• 2 illustriert schematisch ein Anzeigeinstrument gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung in Explosionsdarstellung mit Blick von vorne.
• 3 illustriert schematisch einen Teil eines Anzeigeinstrumentes gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung in Explosionsdarstellung mit Blick von hinten.
• 4 (a) - (d) illustrieren schematisch das Umschalten zwischen zwei Skalen mit einem Anzeigeinstrument gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
• 5 (a) - (b) illustrieren schematisch ein Detail eines Anzeigeinstrumentes gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
• 6 illustriert schematisch ein Kraftfahrzeug gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.

Further details, features and advantages of the invention emerge from the drawings and from the following description of preferred embodiments with reference to the drawings. The drawings merely illustrate exemplary embodiments of the invention, which do not restrict the concept of the invention.

• 1 (a) - (c) schematically illustrate a display instrument according to an exemplary embodiment of the present invention.
• 2 schematically illustrates a display instrument according to an exemplary embodiment of the present invention in an exploded view with a view from the front.
• 3 schematically illustrates part of a display instrument according to an exemplary embodiment of the present invention in an exploded view with a view from behind.
• 4 (a) - (d) schematically illustrate switching between two scales with a display instrument according to an exemplary embodiment of the present invention.
• 5 (a) - (b) schematically illustrate a detail of a display instrument according to an exemplary embodiment of the present invention.
• 6th schematically illustrates a motor vehicle according to an exemplary embodiment of the present invention.

1 (a) - (c) schematically illustrate a display instrument 100 according to an exemplary embodiment of the present invention. This in 1 (a) Display instrument shown 100 shows a second scale 20th , here a stopwatch for measuring lap times. This in 1 (b) Display instrument shown 100 shows a first scale 10 , here a clock to read the time. This in 1 (c) Display instrument shown 100 shows a third scale 30th , here a compass to indicate the direction. A scale ring can be seen in each case 1.1 which on a clock face 1 is put on. The scale ring 1.1 shows dashes for easier reading of the information shown. There is also a first pointer 7.1 and a second pointer 7.2 to recognize. The first pointer 7.1 is longer than the second hand 7.2 . The first pointer 7.1 shows on the first scale 10 the minutes of the current time and on the second scale 20th Seconds on. The second hand is used to display the time 7.2 to an output of a clockwork (see 5 ) coupled. The second pointer 7.2 shows on the first scale 10 the hours of the current time and on the second scale 20th Seconds on. To display the seconds on the second scale 20th is the second pointer 7.2 decoupled from the output of the movement and with the first pointer 7.1 coupled. To display the compass direction with the third scale 30th become the first pointer 7.1 and the second pointer 7.2 arranged in the 6 o'clock position and remain in this while the dial is 1 rotates with changing direction of travel.

The display instrument 100 is in a housing 9 enclosed and for arrangement in a motor vehicle (see 6th ), especially provided in a cockpit.

2 schematically illustrates a display instrument 100 according to an exemplary embodiment of the present invention in an exploded view with a view from the front. From right to left, the following components can be seen from front to back: A front part of the housing 9 , the scale ring 1.1 , the clock face 1 with the first scale 10 , the second scale 20th and the third scale 30th who have favourited the filter disc 2 with the translucent areas 2.1 , the clockwork 8th with the light unit 3 , to the first pointer 7.1 and the second pointer 7.2 and finally a rear part of the case 9 . The light unit 3 has a light ring 3. The light ring 3 is illuminated with LEDs, which are not visible here, via light guide elements.

On the clockwork 8th is a gear 4.2 of a drive 4th arranged. The gear 4.2 engages in a ring gear 4.1 of the drive 4th on. The ring gear 4.1 is on the filter disc 2 arranged, bringing this by rotation of the gear 4.2 around an axis of rotation (see 3 ) can be rotated.

A can also be seen on the filter disk 2 arranged engagement element 6.2 a slip clutch 6th . Details of the slip clutch 6th are in 3 shown.

3 schematically illustrates part of a display instrument 100 according to an exemplary embodiment of the present invention in an exploded view with a view from behind. The clockwork is shown here 8th with the downforce 8.1 , the first pointer 7.1 and the second pointer 7.2 who have favourited the filter disc 2 with the translucent areas 2.1 and the ring gear 4.1 of the drive 4th as well as the dial 1 with the first scale 10 , the second scale 20th and the third scale 30th . It is easy to see that the dial 1 and the filter disc 2 are arranged parallel to each other. The axis of rotation is also shown M. to which the clock face 1 and the filter disc 2 with the drive 4th can be rotated.

The rib structure can also be seen in detail 6.1 and the engaging element 6.2 the slip clutch. The engagement element 6.2 is bendable, preferably made of a plastic or a bendable metal. The engagement element 6.2 engages in the rib structure 6.1 so one that when the tip of the engaging element 6.2 in a depression in the rib structure 6.1 is arranged, the filter disc 2 and the clock face 1 are oriented to each other so that light on a straight path from the lighting unit through the translucent areas 2.1 through one of the scales 10 , 20th , 30th can fall. Is the clock face 1 otherwise rotatably mounted, so it is when rotating the filter disc 2 through the engagement of the slip clutch 6th taken with the rotation. Is the clock face 1 but rotatably mounted, so the engagement element slips 6.2 when the filter disc is rotated 2 about the rib structure 6.1 instead of the clock face 1 to take with you.

4 (a) - (d) illustrate schematically switching between two scales 10 , 20th with a display instrument 100 according to an exemplary embodiment of the present invention. In each of the 4 (a) to (d) are the filter disc 2 , the drive 4th with the gear 4.2 and the ring gear 4.1 who have favourited slipping clutch 6th with the engagement element 6.2 and the rib structure 6.1 , as well as a scale 10 , 20th of the clock face 1 recognizable.

the 4 (a) shows the display instrument 100 with the second scale 20th , a scale for stopping lap times, as a readable scale. At the top, on a 12 original position, the number “60” on the second scale can be read. At 9 o'clock you can see the number "45" and at 6 o'clock you can see the number "30". A fixing element 5 with a fixing nose is shown 5.5 , an actuator 5.4 with a hollow shaft 5.2 and contact elements 5.3 . The actuator 5.4 is in the 5 (a) to (b) shown in more detail. In the in 4 (a) position of the fixing element 5 shown is the dial 1 rotatably mounted.

To switch the second scale 20th becomes the first scale, as in 4 (b) shown, the fixing element 5 to the dial 1 moved there. The fixing nose engages 5.5 into a locking element 5.1 of the clock face 1 a. The locking element 5.1 has two fixation domes 5.1 on. The fixing nose 5.5 is non-rotatably mounted and only towards the dial 1 and from clock face 1 movable away. By engaging the fixing lug 5.5 in the locking element 5.1 becomes a twisting of the dial 1 prevented.

So the first scale 10 becomes visible, the drive now rotates 4th the filter disc 2 so that the translucent areas 2 behind the digits on the first scale 10 are arranged. Because the clock face 1 through the fixing nose 5.5 of the fixing element 5 is held, the engaging element slips 6.2 the slip clutch 6th about the rib structure 6.1 . This is in 4 (c) shown.

To the first scale 10 to be correctly and easily readable, it must be arranged so that the number "12" on the first scale 10 is located at the 12 o'clock position. For this purpose, the fixing element 5 will be withdrawn again so that the fixing lug 5.5 no longer in the locking element 5.1 intervenes. This is in 4 (d) shown. The drive 4th can now the filter disc 2 turn back. Through the engagement of the engagement element 6.2 into the rib structure 6.1 the clock face becomes with this rotation 1 taken so that the number "12" on the first scale 10 located and visible at the 12 o'clock position.

5 (a) - (b) schematically illustrate a detail of a display instrument 100 according to an exemplary embodiment of the present invention. In 5 (a) the fixing element 5 is in the free position with a view from the front (left side) and from the rear (right side). 5 (b) shows the fixing element 5 in the locking position with a view from the front (left side) and from the rear (right side).

The actuator 5.4 of the fixing element 5 has the hollow shaft 5.2 on. Inside the hollow shaft 5.2 are contact elements 5.3 arranged. The contact elements are in the free position 5.3 with the downforce 8.1 of the movement in engagement, with which the hollow shaft 5.2 with a rotary movement of the output 8.1 is taken. The second pointer 7.2 is non-rotatable with the hollow shaft 5.2 connected, with which he is in free position from the output 8.1 can be driven (see inset in 5 (a) ). The first pointers are also in the free position 7.1 and the second pointer 7.2 decoupled, the first pointer 7.1 via another output 8.2 can be driven.

In the locked position, the fixing element 5 is in the direction of the first pointer 7.1 pushed ( 5 (b) ). The downforce 8.1 is not in engagement with the contact elements 5.3 (see inset in 5 (b) ), with which the second pointer 7.2 in the locked position not via the output 8.1 can be driven, but is decoupled from it. Furthermore, one end face is in the locked position 5.2 ' the hollow shaft 5.2 in engagement with the first goat 5.1 . The first pointer 7.1 and the second pointer 7.2 are connected to each other in the locked position.

6th schematically illustrates a motor vehicle 200 according to an exemplary embodiment of the present invention.

List of reference symbols

1

Clock face

1.1

Scale ring

2

Filter disc

2.1

translucent area

3

Light unit

4th

drive

4.1

Ring gear

4.2

gear

5.1

Locking element / fixing dome

5.2

Hollow shaft

5.2 '

Front side

5.3

Contact element

5.4

Control element

5.5

Fixing nose

6th

Slip clutch

6.1

Rib structure

6.2

Engagement element

7.1

first pointer

7.2

second pointer

8th

clockwork

8.1

Downforce

8.2

further downforce

9

casing

10

first scale

20th

second scale

30th

third scale

100

Display instrument

M.

Axis of rotation

Claims (17)

Display instrument (100) for displaying a first scale (10) or a second scale (20) having a dial (1) with the first scale (10) and the second scale (20), the display instrument (100) having a first pointer ( 7.1), a second pointer (7.2) arranged between the first pointer (7.1) and the dial (1) and a clockwork (8), the second pointer (7.2) for displaying information on the first scale (10) with an output (8.1) of the clockwork (8) can be brought into engagement and can be mechanically decoupled from the output (8.1) and brought into engagement with the first pointer (7.1) to display information on the second scale (20), characterized in that that the display instrument has a light unit (3) and a filter disc (2) with translucent areas (2.1) arranged between the dial (1) and the light unit (3), the filter disc (2) being opaque outside the translucent areas (2.1) The first scale (10) and the second scale (20) are translucent and the dial (1) outside the scales (10, 20) is opaque, the indicating instrument (100) having a drive (4) for rotating the filter disc (2) and a fixing element (5), the fixing element (5) being brought into a locking position with engagement with the dial (1) to prevent rotation of the dial (1) and into a free position without engagement with the dial (1) The display instrument (100) has a slip clutch (6), the slip clutch (6) connecting the filter disc (2) to the dial (1) in a rotationally fixed manner when the fixing element (5) is in the free position and the filter disc is rotating (2) relative to the dial (1) allows when the fixing element (5) is in the locked position. Display instrument (100) Claim 1 , wherein a main plane of extension of the dial (1) and a main plane of extension of the filter disc (2) and preferably one Main plane of extent of the lighting unit (3) are arranged parallel to one another. Display instrument (100) Claim 2 , the drive (4) being a drive (4) for rotating the filter disk (2) about an axis of rotation (M), the axis of rotation (M) being arranged perpendicular to the main plane of extent of the filter disk (2). Display instrument (100) according to one of the preceding claims, wherein the slip clutch (6) has a rib structure (6.1) and an engagement element (6.2), the rib structure (6.1) in a rotationally fixed manner with the dial (1) and the engagement element (6.2) in a rotationally fixed manner the filter disk (2) or the rib structure (6.1) is rotatably connected to the filter disk (2) and the engagement element (6.2) is rotatably connected to the dial (1), wherein the engagement element (6.2) is preferably a spring element. Display instrument (100) Claim 4 , wherein the engagement element (6.2) engages in the rib structure (6.1), the engagement element (6.2) engages in the rib structure (6.1) so that the filter disc (2) and the dial (1) when engaging in the rib structure (6.1) are always arranged to each other so that light from the lighting unit (3) can fall in a straight line through the translucent areas (2.1) of the filter disc (2) and through the first scale (10) or the second scale (20). Display instrument (100) according to one of the preceding claims, wherein the fixing element (5) is moved towards the dial (1) for placing in the locking position and is brought into engagement with a locking element (5.1) of the dial (1) and for placing in the free position is moved away from the clock face. Display instrument (100) according to one of the preceding claims, wherein the fixing element (5) has an adjusting element (5.4) which is moved towards the first pointer (7.1) when moving from the free position to the locked position, the adjusting element (5.4) in the free position brings the second pointer (7.2) into engagement with the output (8.1) of the clockwork (8), the adjusting element (5.4) in the locked position mechanically decoupling the second pointer (7.2) from the output (8.1) and the first pointer ( 7.1) engages with the second pointer (7.2). Display instrument (100) Claim 7 , wherein the actuating element (5.4) has a hollow shaft (5.2), with contact elements (5.3) being arranged in the interior of the hollow shaft (5.2), which in the free position are in engagement with the output (8.1), a movement from the free position into the Locking position is a movement in the axial direction of the hollow shaft (5.2) and the contact elements (5.3) are not in engagement with the output (8.1) in the locking position. Display instrument (100) according to one of the Claims 7 until 8th , wherein the second pointer (7.2) is rotatably connected to the hollow shaft (5.2). Display instrument (100) according to one of the Claims 7 until 9 , wherein in the blocking position one end face (5.2 ') of the hollow shaft (5.2) is in engagement with the first pointer (7.1). Indicating instrument (100) according to one of the preceding claims, wherein the drive (4) has a toothed ring (4.1) arranged on the filter disk (2) and a toothed wheel (4.2) engaging in the toothed ring (4.1). Display instrument (100) according to one of the preceding claims, wherein the first scale (10) is suitable for displaying the time on the display instrument (100) and in particular represents the numbers 12, 3, 6 and 9, and the second scale (20) is suitable for use of the display instrument (100) is suitable as a stopwatch and in particular represents the numbers 60, 15, 30 and 45 and wherein the dial (1) preferably has a translucent third scale (30) for displaying the compass direction on the display instrument (100), the third Scale (30) preferably represents the letters N, S, W and O or N, S, W and E, the engagement element (6.2) preferably engaging in the rib structure (6.1) so that the filter disc (2) and the dial ( 1) when engaging in the rib structure (6.1) are always arranged in relation to one another in such a way that light from the lighting unit (3) takes a straight path through the translucent areas (2.1) of the filter disc (2) and through the first scale (10) or the two The third scale (20) or the third scale (30) can fall. Display instrument (100) according to one of the preceding claims, wherein the filter disc (2) is ring-shaped, the luminous unit (3) comprising a luminous ring (3.1). Display instrument (100) according to one of the preceding claims, wherein the display instrument (100) is provided for installation in a vehicle cockpit. Motor vehicle (200) having a display instrument (100) according to one of the preceding claims. Method for operating a display instrument (100) according to one of the preceding claims, wherein the second pointer (7.2) for displaying information on the first scale (10) is coupled to the output (8.1) of the clockwork (8), the second pointer (7.2) to display Information on the second scale (20) from the output (8.1) of the clockwork (8) is decoupled and brought into engagement with the first pointer (7.1), the first pointer (7.1) and the second pointer (7.2) preferably for displaying Information on the second scale (20) are erected parallel to each other. Procedure according to Claim 16 , the filter disc (2) being rotated to display the first scale (10) so that the translucent areas (2.1) allow light to travel straight from the lighting unit (3) through the translucent areas (2.1) and through the The first scale (10) falls and the filter disc (2) is rotated to display the second scale (20) so that the transparent areas (2.1) allow light to travel straight from the lighting unit (3) through the transparent areas (2.1) and falls through the second scale (20).

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