EP2616732A1

EP2616732A1 - Display unit having a projection screen for a head-up display

Info

Publication number: EP2616732A1
Application number: EP11757616.5A
Authority: EP
Inventors: Christian Hopf; Alexander Noel; Horst Rumpf
Original assignee: Johnson Controls GmbH
Current assignee: Johnson Controls GmbH
Priority date: 2010-09-18
Filing date: 2011-09-16
Publication date: 2013-07-24
Also published as: JP5663666B2; US20130321909A1; CN103210251B; KR101441906B1; WO2012035130A1; CN103210251A; US9036256B2; KR20130079543A; JP2013543139A

Abstract

The invention relates to a display unit (1) having a projection screen (3) for a head-up display. According to the invention, the projection screen (3) is mechanically coupled to a main element (5), which is detachably connected to a carrier element (2) and/or a mounting (4).

Description

Display unit with a projection screen for a head-up display

description

The invention relates to a display unit with a projection screen for a head-up display according to the features of the preamble of

Claim 1.

Such head-up displays are generally known from the prior art and comprise a display unit with a projection screen on which vehicle information is projected by means of an imaging unit and optionally by means of an optical module. Of the

Projection screen is transparent and arranged in the field of vision of the driver.

The projection screens are high mechanical and thermal

Exposed to stresses caused by high temperatures,

Sunlight and scratches are caused. Therefore, these components must be replaced several times over the life of a vehicle in the rule.

In the arrangements known in the art, when the projection screen is damaged, the entire display unit must be replaced

be replaced.

JP 2004 41 26 450 A1 describes an arrangement in which a projection screen can be pivoted from the windscreen to a protected position with the aid of an articulated lever arrangement. Thus, while the life of the screen can be increased, when replacing the same but the entire arrangement, ie the entire display unit must be dismantled.

The invention has for its object to provide an improved display unit with a projection screen for a head-up display.

With regard to the display unit, the object is achieved by a display unit with a projection screen for a head-up display with the features of claim 1.

Preferred embodiments and further developments of the invention are specified in the dependent claims.

In the display unit with a projection screen for a head-up display according to the invention the projection screen is mechanically coupled to a base member which is detachably connected to a support member and / or a holder. In this case, the positive and / or non-positive connection between the holder and the carrier element can advantageously be released without tools. This is a simple release of the

Projection screen of the support element and thus a simple replacement of a replaced or repaired

Projection screen allows.

Particularly advantageously, in the case of a defect of the

Projection screen not as usual the whole

Display unit to be replaced, but it can be easily replaced the defective component.

In addition to the simple release of the

Projection screen of the support element that due to the whereabouts of the base member on the projection screen whose optical surface is not deformed upon release.

To release the connection between the holder and the carrier element, an actuating device is preferably arranged in the carrier element. As a result, the actuator is particularly easy from

To reach vehicle users.

The holder has advantageously at the ends of the support member in each case two mutually pivotable hook elements, wherein the hook elements are formed as identical parts. Here are the

Hook elements preferably each have a fixing pin formed as a rotation axis, by means of which these are each in relation to this

Fixing pin corresponding recess within the

Engage carrier element.

Conveniently, the base member has on both end sides in each case to the hook elements corresponding retaining pins, wherein the hook elements engage around the respective retaining pins in the closed state, wherein the base member is supported on the upper side of the support member.

Advantageously, the hook elements are each one side of the

Support member coupled with a spring element with each other, wherein the spring elements are each formed as a spiral spring, wherein the

Spring elements are connected to the hook elements such that spring forces act in the lower region of the hook elements in each case in the opposite direction outward. Thus, a secure hold of the projection screen on the support element can be realized, so that the projection screen during operation of the vehicle against

Vibrations, vibrations and vibrations is protected. The actuating device expediently comprises an operating unit and a shaft, wherein the operating unit is pivotable on the

Carrier element is attached and the shaft extends over an entire length within the support member and each end pivotally mounted or rotatable in corresponding with the shaft recesses in the support member is mounted.

In an advantageous embodiment, in each case an actuating element is arranged on the shaft, which is in operative connection with the hook elements such that a rotation of the actuating elements causes a pivoting movement of the respective hook elements.

Furthermore, the actuators are in operative connection with the base member and engage in arranged on an underside of the base member guides, so that the basic element after releasing the positive and / or non-positive connection between the

Hook elements and the retaining pins from the carrier element is movable upwards.

In a further advantageous embodiment, in each case a spring element is arranged at both ends of the carrier element, which acts on the base element. As a result, a sudden and uncontrolled release of the base element of the support element and thus damage to the projection screen, for example by falling down are avoided even after pressing the control unit.

Particularly advantageously, on both sides of a recess for the

Operating unit arranged in the base element in each case an opening which is closable in each case by means of a pivotable flap. This allows a vehicle user with one or more fingers in the openings intervene and firmly grasp and hold primitive and projection screen. In this case, advantageously, a direct contact of the

Projection screen by the vehicle user during assembly and resulting damage and / or contamination avoidable.

Embodiments of the invention are explained in more detail below with reference to drawings.

Showing:

1 shows schematically a display unit according to the invention for a

Head-up display in a perspective view,

FIG. 2 schematically shows a second perspective view of FIG

Display unit according to FIG. 1,

3 shows schematically a first detail of a holder e

Projection screen of the display unit of Figure 1 and an actuator for releasing the holder,

FIG. 4 schematically shows a second detail of the holder and the actuating device according to FIG. 3,

FIG. 5 schematically shows a detail of the display unit according to FIG

Figure 1 in the region of a support member and

6 shows schematically a display unit according to the invention for a

Head-up display in a perspective view with opened flaps. Corresponding parts are provided in all figures with the same reference numerals.

FIGS. 1 to 5 show a display unit 1 according to the invention for a head-up display in different views. The

Display unit 1 comprises a carrier element 2, on which a

Projection screen 3 is attached. The projection screen 3 is preferably pivotally mounted and arranged about a horizontally extending axis of inclination.

The support element 2 is fastened in particular in a manner not shown in or on a dashboard of a vehicle. Of the

Projection screen 3 is designed such that it is constantly above the dashboard in a field of view of the driver. Alternatively, the projection screen 3 in a manner not shown completely movable, d. H. in particular in a cavity within the dashboard below the surface retractable and extendable out of this cavity when desired use.

For attachment of the projection screen 3, a holder 4 is provided, which has two mutually pivotable hook elements 4.1, 4.2 and 4.3, 4.4 at the ends of the support element 2. The

Hook elements 4.1, 4.2 and 4.3, 4.4 are preferably formed as identical parts, resulting in a particularly cost-effective production of the holder 4 results.

The hook elements 4.1, 4.2 and 4.3, 4.4 each have one

Fixing pin, by means of which this in each case to this

Fixing pin corresponding recess within the

Carrier element 2 engage. The fastening pins and the recesses are designed such that a rotation of the Hook elements 4.1, 4.2 and 4.3, 4.4 relative to the carrier element 2 is possible.

To realize the attachment of the projection screen 3 to the

Carrier element 2, the projection screen 3 is attached to the lower longitudinal side of a base element 5.

The base member 5 has on both end sides of the

Hook elements 4.1, 4.2 and 4.3, 4.4 corresponding

Retaining pins 5.1, 5.2, d. H. a total of four retaining pins 5.1, 5.2, wherein only two retaining pins 5.1, 5.2 are shown.

In the closed state, the hook elements 4.1, 4.2 and 4.3, 4.4 engage around the retaining pins 5.1, 5.2 and the base element 5 is supported on the upper side of the support element 2. To automatically open the

To avoid hook elements 4.1, 4.2 and 4.3, 4.4 are the

Hook elements 4.1, 4.2 and 4.3, 4.4 each one side with a

Spring element 4.5, 4.6 coupled together.

The spring elements 4.5, 4.6 are each formed as a spiral spring, wherein the spring elements 4.5, 4.6 so with the

Hook elements 4.1, 4.2 and 4.3, 4.4 are connected to that

Spring forces F1, F2 in the lower part of the

Hook elements 4.1, 4.2 and 4.3, 4.4 each act in the opposite direction to the outside. Due to the rotatable mounting of the

Hook elements 4.1, 4.2 and 4.3, 4.4 in the carrier element 2 ensteht in the region of the connection of the hook elements 4.1, 4.2 and 4.3, 4.4 with the retaining pins 5.1, 5.2 each have a resultant force Fresl, Fres2, which acts inwardly and the hook elements 4.1, 4.2 and 4.3, 4.4 against the retaining pins 5.1, 5.2 presses. Thus, a secure hold of the projection screen 3 on the

Support element 2 can be realized, so that the projection screen 3 during operation of the vehicle against vibration, vibration and

Vibrations is protected.

In order to enable detachment of the projection screen 3 from the carrier element 2, an actuating device 6 is provided. The

Actuating device 6 comprises an operating unit 6.1 designed as an actuating button, which is fastened pivotably to the carrier element 2. Furthermore, the actuating device 6 comprises a shaft 6.2, which extends over the entire length within the support member 2 and each end rotatably in corresponding with the shaft 6.2

Recesses is mounted in the support element 2.

For releasing the projection screen 3 of the support member 2, the control unit 6.1 and the shaft 6.2 each in operative connection with each other standing pin 6.1 .1, 6.2.1, wherein at a pressure of the

Control unit 6.1 the shaft 6.2 is rotated. To press the

6.1 to allow operating unit, the base element 5 in the area of the operating unit 6.1 has a corresponding recess on this.

The shaft 6.2 also has a respective at its two ends

Actuator 6.2.2, 6.2.3 on. These

Actuators 6.2.2, 6.2.3 are each such with the

Coupled hook elements 4.1, 4.2 and 4.3, 4.4, that upon actuation of the control unit 6.1 and the resulting rotation of the shaft 6.2, a force is generated, which counteracts the resulting forces Fresl, Fres2, so that the hook elements 4.1, 4.2 and 4.3, 4.4 in Move the area of the retaining pins 5.1, 5.2 outwards and release them. Furthermore, the actuating elements are 6.2.2, 6.2.3 in operative connection with the base member 5 and engage a bottom of the

Basic element 5 in there arranged guides. The

Actuators 6.2.2, 6.2.3 have a larger diameter in the lower area than in the upper area, so that they are formed egg-shaped. Due to this shape and the arrangement of the actuators 6.2.2, 6.2.3 in the guides is the basic element 5 with the rotation of the shaft 6.2 therein

Projection screen 3 moves upwards out of the carrier element 2. This movement takes place after the retaining pins 5.1, 5.2 of the

Hook elements 4.1, 4.2 and 4.3, 4.4 are released. Thus, the projection screen 3 together with the base member 5 in a simple manner and without damage from the support member 2 can be removed.

Particularly advantageous is in addition to the simple release of the

Projection screen 3 of the support member 2 that due to the whereabouts of the base member 5 on the projection screen 3 whose optical surface is not deformed upon release.

In order to avoid a sudden release of the base element 5 from the support element 2 and thus damage to the projection screen 3, for example by falling, spring elements 7 are additionally arranged at both ends of the support element 2, wherein only one of the spring elements 7 is shown. The spring elements 7 connect the base element 5 to the carrier element 2 in such a way that an unwanted sudden release of the base element 5 from the carrier element 2 is avoided.

Figure 6 shows schematically a display unit 1 according to the invention for a head-up display in a perspective view with open

Flaps 9. Particularly advantageously, a recess for the on both sides

Operating unit 6.1 in the base member 5 each have an opening 8, which is in each case closable by means of a pivotable flap 9. In this case, opening 8 and flap 9 are formed correspondingly, so that the opening 8 is covered flush with the flap 9 to the surrounding surface of the base member 5. This can be a

Engage vehicle users with one or more fingers in the openings 8 and the base element 5 and projection screen 3 securely grasp and hold. In this case, advantageously, a direct contact of the

Projection screen 3 by the vehicle user during assembly and resulting damage and / or contamination avoidable.

LIST OF REFERENCE NUMBERS

1 display unit

2 carrier element

3 projection screen

4 bracket

4.1 hook element

4.2 hook element

4.3 hook element

4.4 hook element

4.5 spring element

4.6 spring element

5 basic element

5.1 retaining pin

5.2 retaining pin

6 actuator

6.1 Operating unit

6.1 .1 Cones

6.2 wave

6.2.1 Pins

6.2.2 Actuator

6.2.3 Actuator

7 spring element

8 opening

9 flap

F1 spring force

F2 spring force

Fresl resulting force

Fres2 resulting force

Claims

claims

1 . Display unit (1) with a projection screen (3) for a head-up display,

characterized in that the projection screen (3) is mechanically coupled to a base element (5) which is detachably connected to a carrier element (2) and / or a holder (4).

2. Display unit (1) according to claim 1,

characterized in that the positive and / or non-positive connection between the holder (4) and the carrier element (2) can be released without tools.

3. Display unit (1) according to claim 1 or 2,

characterized in that for releasing the connection between the holder (4) and carrier element (2) an actuating device (6) in the carrier element (2) is arranged.

4. Display unit (1) according to one of the preceding claims,

characterized in that the holder (4) at the ends of the carrier element (2) in each case two mutually pivotable

Hook elements (4.1, 4.2 and 4.3, 4.4) has.

5. Display unit (1) according to claim 4,

characterized in that the

Hook elements (4.1, 4.2 and 4.3, 4.4) are designed as equal parts.

6. Display unit (1) according to claim 4 or 5,

characterized in that the

Hook elements (4.1, 4.2 and 4.3, 4.4) each have a trained as a rotation axis fixing pin, by means of which this each engage in corresponding to this attachment pin recess within the support member 2.

7. Display unit (1) according to one of the preceding claims,

characterized in that the base element (5) on both end sides in each case to the hook elements (4.1, 4.2 and 4.3, 4.4) corresponding retaining pins (5.1, 5.2).

8. Display unit (1) according to one of the preceding claims,

characterized in that the

Hook elements (4.1, 4.2 and 4.3, 4.4) in the closed state, the respective retaining pins (5.1, 5.2) engage around, wherein the base member (5) on the upper side of the support member (2) is supported.

9. Display unit (1) according to one of the preceding claims,

characterized in that the

Hook elements (4.1, 4.2 and 4.3, 4.4) one on each side of the

Carrier element (2) with a spring element (4.5, 4.6) are coupled together.

10. Display unit (1) according to claim 9,

characterized in that the spring elements (4.5, 4.6) are each formed as a spiral spring, wherein the spring elements (4.5, 4.6) are connected to the hook elements (4.1, 4.2 and 4.3, 4.4), that spring forces (F1, F2) in the lower Field of

Hook elements (4.1, 4.2 and 4.3, 4.4) each act in the opposite direction outward.

1 1 display unit (1) according to one of the preceding claims,

characterized in that the actuating device (6)

Operating unit (6.1) and a shaft (6.2), wherein the Operating unit (6.1) is pivotally mounted on the carrier element (2) and the shaft (6.2) extends over an entire length within the carrier element (2) and each end pivotally or rotatably in with the shaft (6.2) corresponding recesses in the carrier element (2) is stored.

12. Display unit (1) according to one of the preceding claims,

characterized in that on the shaft (6.2) each end an actuating element (6.2.2, 6.2.3) is arranged, which is in such operative connection with the hook elements (4.1, 4.2 and 4.3, 4.4) that a rotation of the actuating elements ( 6.2.2, 6.2.3) one

Pivoting movement of the respective

Hook elements (4.1, 4.2 and 4.3, 4.4) causes.

13. Display unit (1) according to one of the preceding claims,

characterized in that the actuating elements (6.2.2, 6.2.3) are in operative connection with the base element (5) and engage in arranged on an underside of the base element (5) guides, so that the base element (5) after the release of the form - and / or non-positive connection between the

Hook elements (4.1, 4.2 and 4.3, 4.4) and the retaining pins (5.1, 5.2) upwardly from the support element (2) is movable.

14. Display unit (1) according to one of the preceding claims,

characterized in that at both ends of the

Support member (2) each have a spring element (7) is arranged, which act on the base element (5).

15. Display unit (1) according to one of the preceding claims,

characterized in that on both sides of a recess for the operating unit (6.1) in the base element (5)) in each case an opening (8) is arranged, which in each case by means of a pivotable flap (9) can be closed.