阅读说明：本技术 包括与机电变形装置相关联的柔性oled的车辆照明装置 (Vehicular illumination device including flexibility OLED associated with electromechanical deformations device ) 是由 韦尔克·马塞利诺·贡萨尔维斯 克利斯朵夫·勒达尔 娜塔莉·拉瑞博 伊万·杰奎马尔德 于 2018-03-16 设计创作，主要内容包括：本发明涉及一种用于机动车辆的照明装置,该照明装置包括至少一个由有机电致发光二极管(11)构成的表面光源,该照明装置的特征在于,该有机电致发光二极管(11)是柔性类型(FOLED),并且该照明装置还包括适于与该FOLED(11)的至少一部分(11B)配合以引起该FOLED的变形的机电装置(13)。本发明还涉及一种光学信号块,其包括至少一个这样的照明装置。(The present invention relates to a kind of lighting devices for motor vehicles, the lighting device includes the surface source of light that at least one is made of organic electroluminescent LED (11), the lighting device is characterized in that, the organic electroluminescent LED (11) is flexible type (FOLED), and the lighting device further includes suitable for cooperating at least part (11B) of the FOLED (11) with the electromechanical assembly (13) for the deformation for causing the FOLED.The invention further relates to a kind of optical signalling blocks comprising at least one such lighting device.)

1. a kind of lighting device for motor vehicles, the lighting device include at least one by organic electroluminescent LED (11；111) surface source of light constituted；

It is characterized in that, the organic electroluminescent LED (11；It 111) is flexible type (FOLED), also, the illumination Device further includes being suitable for and the FOLED (11；111) at least part (11B, 11D；111D) cooperate electromechanical assembly (13, 13′；113).

2. lighting device according to claim 1, which is characterized in that the first edge (11A) of the FOLED (11) is solid Fixed, also, the electromechanical assembly includes the first actuator (13), and first actuator includes piston (14), actively Installation with the sliding in the bushing (15), and from the bushing (15) free end of the piston outstanding be connected to it is described The second edge (11B) of FOLED (11), the second edge and first built-in edge (11A) are opposite.

3. lighting device according to claim 2, which is characterized in that the piston (14) of first actuator (13) is in cross It is upwardly extended to the side at the first and second edges (11A, 11B) in the FOLED (11).

4. the lighting device according to any one of Claims 2 or 3, which is characterized in that the third side of the FOLED (11) Edge (11C) is fixed, also, the electromechanical assembly further includes the second actuator (13'), and second actuator includes piston (14') is moveably mounted with the sliding in the bushing (15'), and from the bushing (15') piston outstanding Free end is connected to the 4th edge (11D) of the FOLED (11), the 4th edge and the third built-in edge (11C) Relatively.

5. lighting device according to claim 4, which is characterized in that piston (14') In of second actuator (13') Side transverse to the third and fourth edge (11C, 11D) of the FOLED (11) upwardly extends.

6. lighting device according to claim 1, which is characterized in that the first edge (111C) of the FOLED (111) is Fixed, also, the electromechanical assembly includes the first actuator (113) with rotary shaft (114), the freedom of the rotary shaft It holds and is rigidly attached with the second edge (111D) of the FOLED (111), the second edge and first built-in edge (111C) is opposite.

7. lighting device according to claim 6, which is characterized in that the rotary shaft (114) is transverse to the FOLED (111) side at the first and second edges (111C, 111D) upwardly extends.

8. lighting device according to any one of claim 1 to 7, which is characterized in that electromechanical assembly (13,13'； 113) it is connected to control module, the control module is configured to change in driving environment and/or certain scheduled events occur When, at least partly activate the electromechanical assembly.

9. lighting device according to any one of claim 1 to 8, which is characterized in that the lighting device further includes all As at least one of electroluminescent diode or laser diode add point light source.

10. a kind of optical signalling block for motor vehicles, which is characterized in that including at least one according to claim 1 in 9 Described in any item lighting devices.

Technical field

The present invention generally relates to the signal field of illuminating device of motor vehicles.

Background technique

Signal lamp (position lamp, stop light, direction indicator, back-up lamp, Rear Fog Lamp and daytime running lamps) is configured to Emit light, and the luminosity grid abide by the law, this requires each point of these grids to meet specific luminous intensity model It encloses.

In particular, these traffic lights have to comply with visibility geometric angle, which has determined minimum solid The region at angle, the view of signal lamp is necessary visible (regulation ECE 48 2.13) on surface in the area.The region is by each of sphere Part determines, the center of the sphere and being overlapped referring to center for signal lamp, and the longest circumferential area of the sphere is put down with ground Row.These parts are determined according to the optical axis of signal lamp: horizontal angle corresponds to longitude, and vertical angle corresponds to latitude.It is visible at these Property geometric angle inside, the signal lamp observed from unlimited distance view the light of any one point on surface propagation all It should not be hindered.The level angle (inside is 45 °, and outside is 80 °) having to comply with for position lamp and direction indicator, should Regulation is especially harsh.

For the problem for reducing power consumption, extending service life and pattern freedom, as the substitute of traditional incandescent lamp bulb, Now generally using laser or electroluminescent diode (the latter is more generally referred to by English initial " LED ").

Therefore, it is known that by multiple such diodes and can hold especially from french patent application FR 3 014 787 The plane light guide (more generally by English phrase " fiatguide (flat to lead) " Lai Zhidai) for being contained in enclosure interior is associated.It should Plane light guide is suitable for its light for inputting surface by feed-in and is transmitted to the outlet front surface opposite with coverslip.

In order to meet defined luminosity grid, it is therefore necessary to be equipped with optical element in the front surface of this light guide, the light Learn the luminous flux that element is suitable for spreading the relative orientation issued by these diodes in the horizontal and vertical directions.

However, for such signal lamp, using the point light source of such as LED light, especially in a horizontal plane, It is difficult to accomplish to abide by visibility geometry minimum angles.

Recently, it is also known that, so-called surface source of light can be used, i.e., the size of effective light-emitting area is much larger than the light of its thickness Source.

In particular, seeing the appearance of organic electroluminescent LED (OLED) recent years, meet the defined angle of sight Degree, while certain functions are allowed for, such as position lamp (or cowl lamp) function, great pattern is brought certainly to automaker By.

U.S. Patent application US 2014/0056020A1 discloses a kind of lighting device for motor vehicles comprising The distinct faces light source for the multiple OLED types arranged in a circular manner.

Such lighting device therefore pass through generate it is softer than the light that LED based equipment generates, still in any feelings The homogeneous light distribution all remained unchanged under condition, to allow to ensure certain semiotic functions, such as position lamp function.

Summary of the invention

The present invention is directed to propose a kind of lighting device based on the surface source of light with alterable light distribution.

For this purpose, the invention proposes a kind of lighting device for motor vehicles, the lighting device include at least one by The surface source of light that organic electroluminescent LED is constituted.It is characterized in that, the organic electroluminescent LED is flexible type (FOLED), and the device further includes suitable for cooperating the electromechanics to cause the FOLED to deform at least part of the FOLED Device.

Have benefited from the cooperation between FOLED and electromechanical assembly, lighting device according to the present invention make FOLED deformation with Cause the variation of its light distribution.

Therefore, the device provides changed and/or the feelings such as the generation of certain scheduled events according to driving environment Condition come ensure change light distribution a possibility that.

According to the preferred feature for the lighting device of the invention that can be used alone or in combination:

The first edge of the FOLED be it is fixed, which includes the first actuator, which includes Piston, the piston are moveably mounted to slide in bushing, and the free end of the piston outstanding is attached to this from bushing The second edge of FOLED, the second edge are opposite with first built-in edge；

The piston of first actuator is upwardly extended transverse to the first edge of the FOLED and the side of second edge；

The third edge of the FOLED be it is fixed, which further includes the second actuator, the second actuator packet Piston is included, which is moveably mounted to slide in bushing, and the free end of the piston outstanding is attached to from bushing The 4th edge of the FOLED, the 4th edge are opposite with the third built-in edge；

The piston of second actuator is upwardly extended in the side at third edge and the 4th edge transverse to the FOLED；

The first edge of the FOLED be it is fixed, which includes the first actuator, which includes Rotary shaft, the free end of the rotary shaft are rigidly attached with the second edge of the FOLED, the second edge and first fixed edge Edge is opposite；

The rotary shaft is upwardly extended transverse to the first edge of the FOLED and the side of second edge；

The electromechanical assembly is connected to control module, which is configured to change in driving environment and/or certain When scheduled event occurs, electromechanical assembly is at least partly activated；And/or

The device further includes at least one additional point light source, such as electroluminescent diode or laser diode.

On the other hand, the invention further relates to include at least one as lighting device optical signalling block.

Detailed description of the invention

It will continue to illustrate the present invention by the detailed description of several embodiments now, be described below referring to attached drawing with schematic Mode and not restrictive provides, in the accompanying drawings:

- Fig. 1 is the schematic cross-section along the horizontal plane of optical signalling block, which includes according to the present invention fastly The lighting device of one embodiment, it is planar on FOLED on the sectional view；

Fig. 2 shows the views similar to Fig. 1, but FOLED is in curved shape on the diagram；

- Fig. 3 is the vertical cross-section schematic diagram of optical signalling block, which includes change according to first embodiment The lighting device of type；

- Fig. 4 is the front-view schematic diagram of optical signalling block, which includes photograph according to a second embodiment of the present invention Bright device, all FOLED are planar on the front view；And

- Fig. 5 shows the view similar to Fig. 4, but the helical curved shape of one of FOLED.

Specific embodiment

Figures 1 and 2 show that being used for the optical signalling block 1 of motor vehicles.

In the description that follows, by convention, term " lower part ", " top ", " longitudinal direction ", " lateral " and " transverse direction " will be opposite In installation site definition of this optical block on vehicle.

Optical signalling block 1 includes shell 2, which has the exit portal of light, and the exit portal is tight by transparent coverslip 3 Thickly close.

Optical block 1 further includes lighting device 10, which is contained in the cavity defined by shell 2 and coverslip 3 In.

The lighting device 10 includes that (OLED refers to English phrase " Organic Light by organic electroluminescent LED Emitting Diode (organic electroluminescent LED) ") constitute square surface light source 11.

The basic structure of this organic electroluminescent LED (OLED) be superimposed between two electrode layers it is several layers of organic Material, wherein one layer (usually anode) is fixed on substrate.

Organic film generally includes the hole-conductive layer being arranged on the anode being made of indium tin oxide (ITO), and (HTL refers to English phrase " Hale Transport Layer (hole-conductive layer) "), (EL refers to English phrase to the luminescent layer containing dyestuff " Emission Layer (luminescent layer) ") and electron transfer layer (ETL refers to English phrase " Electron Transport Layer (electron transfer layer) ").

The operation of OLED is based on electroluminescent principle.

By applying voltage appropriate, electrons and holes inject EL layers from cathode and anode.Electrons and holes are floated to each other It moves, and is combined in the EL layers and form exciton, the disintegration of exciton provides the excitation energy of dye molecule, so as to cause its electroluminescent hair Light.The color of the light of sending depends on the energy difference between excitation state and ground state, therefore the progress of other dye molecules can be used Change.

The selection of charge transport material, luminescent layer and electrode is the basic parameter for determining OLED performance and efficiency.

(FOLED refers to English phrase " Flexible to the more specifically flexible type of organic electroluminescent LED 11 Organic Light Emitting Diode (flexible organic electro-luminescence diode) "): the setting of its organic layer is at such as poly- pair In ethylene terephthalate (PET), the flexible plastic substrates of even metal or glass.

FOLED 11 is advantageously arranged vertically within inside shell 2, so that its optical axis X is along direction orientation longitudinally substantially.

For the maximum luminance for seeing the outside from optical block 1, the inside positioned at the FOLED 11 is (that is, with lid glass Piece 3 is opposite) electrode be reflective so that being reflected to coverslip 3 towards the light inside shell 2.

FOLED 11 further includes at least existing in one of its edge place, unshowned electrical connection interface, the interface and setting Supplementary device on shell 2 cooperates the power supply to ensure the interface.

In addition, the first vertical side edge 11A of the FOLED is rigidly fixed to shell 2 by supporting element 12.

According to the present invention, lighting device 10 further includes electromechanical actuator 13, which is contained in the interior of shell 2 Portion is simultaneously connected to continuous or stepping electric motor, the engine and is not shown.

The actuator 13 includes piston 14, which is moveably mounted to slide in bushing 15, the bushing stiffness It is fixed to the shell 2, which upwardly extends in the side of vertical and lateral edge 11A, 11B transverse to the FOLED 11.

The piston 14 free end outstanding from bushing 15 is attached to the side edge 11B of the FOLED11, the side edge with should Built-in edge 11A is opposite.

When piston 14 is in retracted position, the piston is no on vertical and lateral edge 11B to apply any stress, therefore FOLED 11 planar (Fig. 1), at this point, under luminance, FOLED 11 have spatially with it is uniform in angle Brightness (that is, orthotropy or Lambertian).

Therefore, for be located at rear of vehicle observer (for example, the driver for following vehicle) for, no matter viewing angle How, the visual perception to the brightness of FOLED 11 will be identical.

When piston 14 is driven and slided by electric motor, which applies on vertical and lateral edge 11B is laterally answered Power changes so as to cause its light distribution and (schemes to force FOLED 11 that the crooked outline for being essentially parabolic shape is presented 2)。

It can be advantageously provided guiding device (not shown), for guiding OLED to deform, especially ensure that OLED appropriate Direction bending.

In this case, the convexity of the FOLED 11 is bent outwardly herein, this is for the observation in vertical axis For person (for example, along driver of the servo-actuated vehicle of straight line), cause the FOLED depending on surface reduce and therefore cause its bright Degree increases, and this increase becomes apparent in region at its center, therefore the brightness of middle section is higher than two lateral side regions.

In addition, the raised profile of FOLED 11 allows luminous intensity level to increase, the light is from side-emitted and by being located at The observer of the big incidence angle of axis relative to vehicle receives (for example, driver of the servo-actuated vehicle of zig zag).

On the other hand, since the view of the FOLED 11 gone from the side is larger on surface, so the brightness felt will be compared with It is low.

The movement (and therefore making FOLED 11 be changing into curved shape, vice versa) of the piston 14 of actuator 13 by Be contained in optical block 1 or its external unshowned control module management (module can for example be integrated in car-mounted computer In, and can be pure software form, it is also possible to for the hardware components with integrated circuit being combined together with software section Form).

The control module (directly or indirectly) is connected to electric motor, is configured as changing in driving environment When (for example, variation of light or transportation condition) and certain scheduled events occur (for example, emergency braking, detect it is dangerous or The center locking of activation/deactivate car door), the translation of automatic trigger piston 14 (and FOLED 11 is therefore made to be changing into curved shape Shape), the animation under welcome mode, the message under drive mode etc..

Fig. 3 shows the rear optical block of modification according to the abovementioned embodiments of the present invention, the rear optical signal Block accommodates lighting device 10'.

Below and in the attached drawing 3, for the element being identical with the first embodiment, identical appended drawing reference is kept, And for similar element increase a slash (').

Although not being aforementioned device 10, lighting device 10' is similar to aforementioned device 10:

The horizontal upper edge 11c of-FOLED 11 equally passes through supporting element 12' and is rigidly fixed to shell 2；And

The device further includes the second electromechanical actuator 13', and second electromechanical actuator 13' is contained in the inside of shell 2, And it is connected to unshowned continuous or stepping electric motor, actuator 13' includes being moveably mounted with sliding in bushing 15' Dynamic piston 14', is fixed to the bushing stiffness shell 2.

Piston 14' is upwardly extended in the side of the horizontal edge of top 11C and lower part 11D transverse to FOLED 11, from The free end outstanding of bushing 15 is attached to the lower edge 11D opposite with built-in edge 11C.

When piston 14 and 14' are in retracted position, the piston 14 and 14' are not applied on side edge 11B and lower edge 11D Add stress, therefore FOLED 11 planar (Fig. 3).

When one of piston 14,14' are driven and slide, it applies laterally or vertically on corresponding edge 11B, 11D Stress changes to force FOLED 11 that curved profile is presented so as to cause its light distribution.

The electric power transmitter for causing piston 14, the 14' of actuator 13 and 13' mobile is connected to control module, the control mould Block be configured as driving environment change and/or certain scheduled events occur when, one of automatic trigger piston 14,14' Or both translate simultaneously so that different curved shapes is presented in FOLED 11.

Fig. 4 and Fig. 5 shows rear optical block 100, contains the lighting device of second embodiment according to the present invention 110。

The lighting device 110 includes multiple rectangle FOLED 111 that are vertical in shell 102 and being arranged side by side (this In the case of be four).

The horizontal upper edge 111C of these FOLED 111 is rigidly fixed to shell 102 via corresponding supporting element 112.

Equipment 110 further includes four actuators 113 for being contained in 102 inside of shell and being connected to electric motor, the electricity Force engine is not shown.

Each actuator 113 includes rotary shaft 114, and the rotary shaft 114 is in the level transverse to corresponding FOLED 111 The side of edge 111C and horizontal lower edge 111D upwardly extend, and the free end of the rotary shaft is rigidly connected to and fixed edge Edge 11lC opposite lower edge 111D.

First position can be presented in the rotary shaft 114 of each actuator 113, in the first position, corresponding FOLED 111 lower edge 111D is parallel to top edge 11lC extension, so that FOLED 111 planar (Fig. 4 b), at this point, sending out Under light state, FOLED 11 have spatially with the uniform luminance in angle.

When the axis 114 is driven and rotated by electric motor connected to it, it is identical that it forces lower edge 111D to carry out Movement, to force corresponding FOLED 111 that spiral crooked outline (Fig. 5) is presented.

Electric motor is connected to control module, which is configured as changing in driving environment and/or certain When a little scheduled events occur, automatic trigger one or the axis 114 for triggering multiple actuators 113 simultaneously rotate, so that FOLED 11 Different curved shapes is presented.

Certainly, many other embodiments can be considered within the scope of the invention.

Therefore the quantity of FOLED is variable, and each of which can be different types of with different number Actuator is associated.

These actuators can be for example made of a lamination or disk, these plates or packing can pass through according to used material Piezoelectricity or electroluminescent effect and expand or compress.

Actuator can also be based on such as other of electromagnetism or Joule effect principle.

The movement of certain parts of FOLED can also be suppressed in a certain direction, to generate more complicated FOLED deformation (such as waveform), to bring unique visual signature.

Currently brightness value (about 2000cd/m relevant to FOLED²) make lighting device according to the present invention especially suitable Together in realization position lamp (or cowl lamp) function.

It is also contemplated that being integrated into additional light source (such as electroluminescent diode or laser diode) according to this hair In bright lighting device, to be combined with FOLED or multiple FOLED, to ensure other semiotic functions, such as STOP signal lamp function Energy or steering indicating function.

The optical block for accommodating the apparatus according to the invention can also include to be adapted for carrying out other illuminations and/or semiotic function Other devices, such as (DRL refers to English phrase " Daytime for blinker function, Fog-proof light function or daytime running lamps function Running Light (daytime running lamps) ").