EP3167250A1 - Instrument indicateur éclairé destiné à un véhicule automobile - Google Patents

Instrument indicateur éclairé destiné à un véhicule automobile

Info

Publication number
EP3167250A1
EP3167250A1 EP15735856.5A EP15735856A EP3167250A1 EP 3167250 A1 EP3167250 A1 EP 3167250A1 EP 15735856 A EP15735856 A EP 15735856A EP 3167250 A1 EP3167250 A1 EP 3167250A1
Authority
EP
European Patent Office
Prior art keywords
light
pointer
display device
steps
propagation
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.)
Withdrawn
Application number
EP15735856.5A
Other languages
German (de)
English (en)
Inventor
Matthias WUNDERLICH
Lutz Diederichs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP3167250A1 publication Critical patent/EP3167250A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B11/00—Indicating elements; Illumination thereof
    • G12B11/04—Pointers; Setting-mechanisms therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22—Pointers, e.g. settable pointer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22—Pointers, e.g. settable pointer
    • G01D13/26—Pointers, e.g. settable pointer adapted to perform a further operation, e.g. making electrical contact
    • G01D13/265—Pointers which conduct light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/60—Structural details of dashboards or instruments
    • B60K2360/68—Features of instruments
    • B60K2360/698—Pointers of combined instruments
    • B60K2360/6992—Light conducting pointers

Definitions

  • the invention relates to a display device for a motor vehicle.
  • the display device is designed as a pointer instrument and has a pointer with a pointer flag, in which a transparent light guide emits light in a propagation direction towards a viewer.
  • pointer flags are typically used in gauges in which a particular value is to be marked within a circular scale.
  • instrument cluster '' it is, for example, a speedometer (speedometer) or speed display.
  • the pointer vane can be made, for example, of PMMA or a polycarbonate (PC) and have on a lower side a hot stamping foil which scatters light which propagates in the optical waveguide in the emission direction. Since the light guide is transparent, you can see in the dark, for example, a night ride, only the scattering hot stamping foil, which is recognized due to their scattering property only as a diffuse line. Therefore, it may take an undesirable amount of time for a driver to focus on the pointer when switching from the road to the instrument cluster.
  • PC polycarbonate
  • DE 10 2008 011 062 A1 describes a multicolor pointer for a measuring element which can generate at least two colors of light from a light source with a single color.
  • the light is colored by means of a foil.
  • a pointer for a display instrument which has the shape of an isosceles triangle in cross section, so that a color layer on the underside of different viewing directions
  • CONFIRMATION COPY can be seen on the pointer by refraction and total reflection of the radiation input in the pointer.
  • JP 6281751 A a pointer for a display instrument is known, in whose transparent material a fluorescent substance is mixed. A curved gutter scatters the fluorescent light into the environment.
  • the invention has for its object to provide in a display device of a motor vehicle a clearly perceptible in the dark pointer flag.
  • the invention provides a display device for a motor vehicle.
  • the display device has a pointer vane with a transparent light conductor which is designed to receive light propagating along a propagation direction from a light input device at a light entry side and to direct the light at a light exit side into a predetermined emission direction, ie towards a viewer. radiate.
  • the pointer vane has a particularly elongated optical fiber which extends in its longitudinal direction along the pointer vane from a pointer foot to a pointer tip.
  • the optical waveguide In the optical waveguide, light is irradiated at a light entrance side by the light coupling device, and the optical waveguide deflects the light toward the light emission direction, so that it exits again at its light exit side.
  • the light guide has a spreading side which is opposite the light exit side and has a plurality of steps. These steps are arranged offset to each other transversely or perpendicularly to the direction of propagation of the light, so that each stage of the light, which enters the light guide at the light entrance side, is irradiated independently of any other stage.
  • the display device has the advantage that now as a pointer flag no diffuse luminous line in the display device tion is to be seen, but a three-dimensional luminous object formed from the mutually offset, luminous stages. A driver can thus focus the pointer flag with much less effort.
  • the steps are also arranged one behind the other along the propagation direction, so that the steps as a whole form a cascade or staircase one after the other by their offset transversely to the direction of propagation and their arrangement along the propagation direction. This results in a particularly pronounced depth effect when viewing the pointer flag.
  • the steps have a rough surface structure and / or scattering elements integrated in a material of the light guide and / or a reflective, opaque coating and / or a fluorescent material.
  • a rough surface structure can be achieved, for example, by grinding the optical waveguide or by a correspondingly rough tool shape when creating the optical waveguide, for example by injection molding or embossing the optical waveguide.
  • a scattering body for example, granules of reflective bodies, such as mother of pearl, may be provided.
  • a reflective finish may be based on chromium or a lacquer, e.g. provided with white paint.
  • the fluorescent material may be integrated into the material of the light guide or applied to the surface of the light guide.
  • the steps preferably have an oblique position with respect to the propagation direction of the light on the one hand and the emission direction on the other hand.
  • a surface normal of the steps having a vector of the propagation direction preferably includes an angle which is in a range of 5 degrees to 85 degrees, particularly 5 degrees to 45 degrees.
  • the steps appear as depth offset, wide, luminous stripes in the pointer flag.
  • the display device With regard to the position of the light entry side and the orientation of the steps, there are two principal embodiments in the display device according to the invention, namely a lateral illumination on the one hand and a longitudinal illumination on the other hand.
  • the light guide entry side extends along a longitudinal extension direction of the pointer vane from a pointer foot to a pointer tip.
  • the pointer flag can be arranged a rotatably mounted pointer shaft. The pointer tip can be moved over a scale by turning the pointer shaft.
  • the light input device thus also extends on this longitudinal side of the pointer flag from the pointer foot to the pointer tip.
  • the light coupling device has a light-tight socket element, in which a propagation region is integrated, for example with an optical fiber.
  • the propagation area is open to the light entry side.
  • the light is thus distributed in the propagation region along the longitudinal extension direction of the pointer flag and enters the light guide laterally, that is to say perpendicularly to the longitudinal extension direction.
  • the propagation direction, along which the light enters the light guide is therefore perpendicular to the longitudinal direction. Accordingly, the steps extend along the longitudinal extension direction from the pointer foot to the pointer tip. This results in the advantage that light can be distributed in the light guide particularly homogeneous and thus the pointer flag shines particularly homogeneous.
  • an optical fiber is arranged in the propagation area and / or a wall of the socket element has a specular or light-scattering coating and / or a fluorescent material.
  • the reflective coating of the inside of the socket element can be achieved for example by chromium or a mirror foil.
  • Light-scattering coatings can be achieved for example by a lacquer, for example white color, or by roughening the surface.
  • the light is coupled in not only from one light entry side, but the light guide is designed to light propagating along a further propagation direction from another light input device on a further light entry side opposite the light entry side receive.
  • the light guide is designed to light propagating along a further propagation direction from another light input device on a further light entry side opposite the light entry side receive.
  • light can penetrate from both longitudinal sides of the light guide into this.
  • the spread side so the scaled towards the underside of the light guide mirror-symmetrical to the stages further steps provided that scatter the light, which enters through the other light entrance side, also towards the propagation direction.
  • the light can be transported or guided to the further light entry side through a further socket element.
  • the pointer flag is designed such that a light guide has on its two longitudinal sides in each case a socket element for scattering light in the longitudinal sides of the light guide.
  • the longitudinal illumination it is provided that the light entry side is formed on the pointer foot and the direction of propagation of the incoming light along the longitudinal extension of the pointer from the pointer foot to the pointer tip points.
  • the steps then extend perpendicular to the direction of longitudinal extension, that is to say transversely to the pointer vane.
  • an embodiment of the display device provides that the pointer is rotatably arranged with respect to a light source for the light by the light source is arranged adjacent to the pointer shaft of the pointer, so for example on a circuit board or board, which also has a motor may have to rotate the pointer shaft.
  • the light source is designed to emit the light along the pointer shaft, e.g. to radiate into a pointer cap.
  • the light coupling device can begin, which then leads the light to the light entrance side of the light guide.
  • the light may comprise, for example, one or more light-emitting diodes.
  • An alternative embodiment, which is not claimed separately, provides that the light source is located in the pointer cap itself.
  • the display device according to the invention is preferably designed as a combination instrument. It can also have more than one of the described pointer flags. Each pointer flag then belongs in particular to a pointer instrument of the display device.
  • the invention also includes a motor vehicle, which is preferably designed as a motor vehicle, in particular as a passenger car.
  • the motor vehicle according to the invention is characterized by at least one display device, which in each case represents an embodiment of the display device according to the invention.
  • FIG. 1 shows a schematic representation of an embodiment of the motor vehicle according to the invention
  • FIG. 2 is a schematic representation of a perspective view of a pointer of a display device of the motor vehicle of Fig. 1,
  • Fig. 3 is a schematic representation of another perspective
  • FIG. 2 is a schematic representation of a cross section of the pointer of FIG. 2, FIG.
  • Fig. 5 is a schematic representation of another cross section of the
  • Fig. 6 is a schematic representation of a longitudinal section of a pointer of an alternative embodiment of the display device according to the invention.
  • the exemplary embodiment explained below is a preferred embodiment of the invention.
  • the described components of the embodiment in each case represent individual features of the invention which are to be considered independently of one another and which also extend the invention independently of one another and thus also individually or in a different combination than the one shown as part of the invention ,
  • the described embodiment can also be supplemented by further features of the invention already described.
  • a motor vehicle 10 is shown, which may be, for example, a motor vehicle, especially a passenger car, act.
  • the motor vehicle 10 may have a display device 12, which may be configured, for example, as an instrument cluster or as a display device of a dashboard of the motor vehicle 10.
  • the display device 12 may include a pointer instrument 14.
  • the pointer instrument 14 may be, for example, a tachometer or a speed indicator.
  • the pointer instrument 14 in this case displays a current value to be displayed on a scale (not shown) by means of a pointer 16.
  • the pointer 16 may include a pointer tab 18 and a pointer cap 20 and a pointer shaft 22.
  • the pointer shaft 22 may be rotatably connected to a shaft 24 of an electric motor 26, for example, be attached to the shaft 24.
  • the pointer shaft 22 and thus the entire pointer 16 can be rotated and thereby a pointer tip 30 of the pointer lug 18 can be aligned to a value of the scale.
  • a pointer foot 32 of the pointer vane 18 may be disposed in the pointer cap 20.
  • the motor 28 may be located on a printed circuit board 34.
  • the pointer cap 20 may be executed splash-white or painted and may be designed to cover a deflection of illumination for the pointer vane 18.
  • the illumination can be done by various options, preferably it is an illumination by means of one or more light-emitting diodes 36, which are arranged on an upper side of the printed circuit board 34, ie to the pointer 16 out.
  • the light-emitting diodes 36 then emit their light 38 towards the pointer cap 20, where it is then coupled into the pointer vane 18 and thereby the pointer vane 18 by means of deflection and / or reflection of the light 38 in an emission direction 40 away from the scale towards a viewer is emitted.
  • the distribution of the light 38 in the pointer vane 18 can be done by a lateral illumination, as explained in connection with FIG. 2 to FIG. 5.
  • An alternative is a longitudinal illumination, which will be explained in connection with FIG.
  • the lateral illumination provides that the pointer lug 18 has a transparent light guide 42 and a light-tight pointer sheath 44 which surrounds it laterally, transversely to the direction of propagation 40.
  • the light guide 42 may be made of PMMA or a polycarbonate, for example.
  • the pointer enclosure 44 may be a first version provide element 46 on one side and a second socket 48 on an opposite side of the light guide 42.
  • FIG. 3 the pointer 6 is shown from a perspective of the board 34, so the light emitting diodes 16 from.
  • the pointer foot 32 is defined toward the pointer tip 30.
  • the socket elements 46, 48 likewise extend in the longitudinal extension direction 50 from the pointer foot 32 to the pointer tip 30 and are arranged on opposite sides of the light guide 42, thus gripping the light guide 42 and thus forming a sandwich arrangement together with the light guide 42
  • Light emitting diodes 36 radiated light 38 can penetrate in the region of the pointer foot 32 in a respective propagation region 52, 54 of the socket elements 46, 48.
  • the propagation regions 52, 54 extend along the longitudinal extension direction 52 in the interior of the socket elements 46, 48, as illustrated by the cross-section in FIG. 4.
  • a possible position along the cross section along the pointer vane 18 is illustrated in FIGS. 3 and 4.
  • the propagation regions 52, 54 may, for example, be configured as chambers in which an optical fiber 56, 58 is arranged along the longitudinal extension direction 50 (shown in FIG. 4 as a vector in the drawing plane) can.
  • the light which has penetrated into the propagation regions 52, 54 at the pointer base 32 propagates in the optical fibers 56, 58 along the direction of longitudinal extension 50 and exits through openings 60, 62 of the propagation regions 52, 54 toward the light guide 52.
  • the light guide 42 has, in the region of the passage openings 60, 62, in each case a light entry side 64, 66, through which the light 38 penetrates into the light guide 42 along a respective propagation direction 68, 70.
  • the optical waveguide 42 has two stepped, cascaded regions 76, 78 within the pointer vane 18 on a diffuser side 74 opposite the light exit side 72.
  • the stepped areas 76, 78 may be designed such that they are visible to the respective observer by means of a structure 84 located on edges or steps 80, 82 as soon as they are illuminated by means of the light 38.
  • the effect that results creates a three-dimensional image for the viewer and creates a depth effect within the pointer vane 18.
  • the depth effect is on the one hand by the structuring 84 and on the other hand by a slight inclination of the end portions of the cascades 76, 78, so the stages 80, 82, generated.
  • the steps 80, 82 are offset transversely to the direction of propagation 68, 70 of the light 38 which illuminates them, that is, one above the other in FIG. 4.
  • the steps 80, 82 are also arranged one behind the other along the respective propagation direction 68, 70, ie, laterally relative to one another in FIG. 4, the steps 80, 82 each form a staircase leading to the direction of propagation 40.
  • FIG. 5 shows for a stage 80 its normal vector 86 of the step level.
  • the step vector 86 includes with the associated propagation direction 68 an angle 88 which is greater than 0 degrees.
  • the optical fibers 56, 58 they are covered by the light-tight pointer sheath 44. It is possible to dispense with even a pointer cap 20 or to integrate the pointer cap 20 in the component of the pointer sheath 44.
  • FIG. 6 shows that the light entry surface 64 is arranged on the pointer foot 32 of the pointer vane 42 and the light 38 reaches the light entry surface 64 via a pointer cap 20, which represents a light guide device in this case, and along the longitudinal extension direction 50 of FIG Pointer flag 42 penetrates into the material of the pointer flag.
  • stages 80 which may likewise have the described structure 84, the light at the scattering side 74 of the pointer vane 42 can be refracted in the direction of the emission direction 40, so that the light 38 exits the light conductor 42 on the light exit side 72 in the direction of the observer.
  • no pointer enclosure 44 is necessary for distributing the light. The light coupling takes place below the pointer cap.
  • the example shows how by the invention a 3-dimensional representation of pointer instruments in the instrument cluster by gradation or cascades and structuring within the pointer flag can be achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Details Of Measuring Devices (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Instrument Panels (AREA)

Abstract

L'invention concerne un dispositif indicateur (12) destiné à un véhicule automobile (10), présentant un bras d'indicateur (18) muni d'un guide d'onde optique transparent (42) qui est conçu pour recevoir au niveau d'un côté entrée de lumière (64) de la lumière (38) provenant d'un dispositif d'injection de lumière (20, 46) et se propageant dans une direction de propagation (68), et pour émettre la lumière au niveau d'un côté sortie de lumière (72) dans une direction d'émission (40). L'invention vise à proposer dans le dispositif indicateur (12) un bras d'indicateur (18) nettement perceptible dans l'obscurité. A cet effet, le guide d'onde optique (42) présente un côté diffusion (74) opposé au côté sortie de lumière (72) et présentant plusieurs degrés (80) agencés décalés les uns par rapport aux autres transversalement à la direction de propagation (68).
EP15735856.5A 2014-07-11 2015-07-07 Instrument indicateur éclairé destiné à un véhicule automobile Withdrawn EP3167250A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014010310.2A DE102014010310B3 (de) 2014-07-11 2014-07-11 Beleuchtetes Zeigerinstrument für ein Kraftfahrzeug
PCT/EP2015/001391 WO2016005051A1 (fr) 2014-07-11 2015-07-07 Instrument indicateur éclairé destiné à un véhicule automobile

Publications (1)

Publication Number Publication Date
EP3167250A1 true EP3167250A1 (fr) 2017-05-17

Family

ID=53539643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15735856.5A Withdrawn EP3167250A1 (fr) 2014-07-11 2015-07-07 Instrument indicateur éclairé destiné à un véhicule automobile

Country Status (5)

Country Link
US (1) US9837172B2 (fr)
EP (1) EP3167250A1 (fr)
CN (1) CN106489067B (fr)
DE (1) DE102014010310B3 (fr)
WO (1) WO2016005051A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014010310B3 (de) 2014-07-11 2015-11-26 Audi Ag Beleuchtetes Zeigerinstrument für ein Kraftfahrzeug
CN109027968B (zh) * 2016-06-29 2020-10-13 深圳市一窗科技有限责任公司 一种出光系统

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Also Published As

Publication number Publication date
CN106489067A (zh) 2017-03-08
US9837172B2 (en) 2017-12-05
CN106489067B (zh) 2018-02-23
DE102014010310B3 (de) 2015-11-26
US20170178754A1 (en) 2017-06-22
WO2016005051A1 (fr) 2016-01-14

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