DE102016108575A1 - ILLUMINATED VEHICLE AREA - Google Patents

Abstract

In the present case there is provided an illuminated engine compartment located in a vehicle. The illuminated engine compartment includes a light generating assembly. A first luminescent part is located on the light-generating assembly and is configured to luminesce in response to an excitation from the light-generating assembly. A second luminescent part is located on a feature in the vehicle engine compartment and is configured to luminesce in response to light emitted from the light generating assembly.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of US Patent Application No. 14 / 603,636, filed January 23, 2015, entitled "DOOR ILLUMINATION AND WARNING SYSTEM", which is a continuation-to-part of US Patent Application No. 14 / 086,442, filed on 21 November 2013, entitled "VEHICLE LIGHTING SYSTEM WITH PHOTOLUMINESCENT STRUCTURE". The above-mentioned related applications are hereby incorporated by reference as if they had been mentioned.

FIELD OF THE INVENTION

The present invention relates generally to vehicle lighting systems, and more particularly to vehicle lighting systems using one or more photoluminescent structures.

BACKGROUND OF THE INVENTION

Lighting obtained from photoluminescent structures provides a unique and attractive viewing experience. It is thus desired to realize such structures in automobiles for various lighting applications.

BRIEF SUMMARY OF THE INVENTION

In accordance with one aspect of the present invention, a lighted room for a vehicle is provided. The illuminated room includes a light generating assembly. On the light-generating assembly is a first luminescent portion configured to luminesce in response to excitation by the light-generating assembly. On a feature in the vehicle engine compartment is a second luminescent member configured to luminesce in response to excitation by the light generation assembly.

In accordance with another aspect of the present invention, a lighting system for a vehicle is provided. The lighting system includes a printed LED that can be coupled to a vehicle surface. A first photoluminescent structure partially covers the printed LED and is configured to luminesce in response to stimulation by the printed LED. Adjacent to the first photoluminescent part, a translucent part is arranged. A second photoluminescent portion is configured to luminesce in response to light emitted by the printed LED.

In accordance with another aspect of the present invention, a lighted room is provided. A light generation assembly emits light at a first wavelength. A first photoluminescent portion is disposed over the light-generating assembly and configured to luminesce in response to excitation by the light-generating assembly. A portion of the light passes through the photoluminescent structure at the first wavelength. A second photoluminescent portion is located in the space that luminesces in response to the first wavelength light.

These and other aspects, objects and features of the present invention will be understood and understood by those skilled in the art upon reading the following specification, claims and appended drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

is 1A a side view of a photoluminescent structure formed as a coating for use in a luminescent panel light assembly, according to one embodiment;

is 1B a plan view of a photoluminescent structure, which is formed as a discrete particle, according to an embodiment;

is 1C a side view of several photoluminescent structures, which are formed as discrete particles and integrated in a separate structure;

shows 2 a perspective view of a vehicle engine compartment, in which a lighting system is used according to an embodiment;

is 3A a cross-sectional view taken along the line III-III of 2 showing a light source according to an embodiment;

is 3B a cross-sectional view taken along the line III-III of 2 further showing the light source according to an embodiment;

is 3C a cross-sectional view taken along the line III-III of 2 showing an alternative light source according to an embodiment;

shows 4 a plan view of a light generating assembly according to an embodiment with different types and concentrations of LED sources across the light generator assembly;

is 5A a perspective view of a vehicle engine compartment, in which a lighting system is used, further comprising luminescent motor features;

is 5B a cross-sectional view along the line VV of 5A depicting a vehicle engine compartment using an illumination system according to an alternative embodiment; and

is 6 a block diagram of the vehicle and the lighting system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As required, detailed embodiments of the present invention are disclosed herein. It should be understood, however, that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various and alternative forms. The figures do not necessarily follow a detailed structure and some diagrams may be exaggerated or scaled down to show a functional overview. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching various applications of the present disclosure to a person skilled in the art.

As used herein, when used in a list of two or more items, it means that any of the enumerated items may be used alone, or any combination of two or more of those enumerated Objects can be used. For example, if a composition is described as containing features A, B and / or C, composition A may be alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination or A, B and C in combination.

The following disclosure describes a lighted engine room for a vehicle. The space may advantageously use one or more photoluminescent structures for illumination in response to predefined events. The one or more photoluminescent structures may be configured to convert light received from an associated light source and to re-emit the light at a different wavelength, which is typically found in the visible spectrum. In some implementations, the light source may be of a thin design, which helps the light source fit into small package spaces of the vehicle where conventional light sources may not be practical.

Regarding 1A - 1C are different embodiments of photoluminescent structures 10 each of which is capable of having a substrate 12 coupled, which may be a vehicle trim part or a vehicle-related piece of equipment. at 1A becomes the photoluminescent structure 10 generally shown as a coating (eg, a film) formed on a surface of the substrate 12 can be applied. In 1B is the photoluminescent structure 10 generally shown as a discrete particle contained in a substrate 12 can be integrated. In 1C is the photoluminescent structure 10 generally shown as multiple discrete particles contained in a carrier medium 14 (for example, a film) can be integrated, which then on the substrate 12 applied (as shown) or can be integrated therein.

At the most elementary level involves a given photoluminescent structure 10 an energy conversion layer 16 , which may include one or more sublayers exemplified by the dashed lines in FIG 1A and 1B are shown. Each sub-layer of the energy conversion layer 16 may include one or more photoluminescent materials having energy conversion elements with phosphorescent or fluorescent properties. Any photoluminescent material may be excited upon receipt of light having a specific wavelength, causing the light to undergo a conversion process. Under the principle of downconversion, the coupled light is converted to light of a longer wavelength, that of the photoluminescent structure 10 is decoupled. Conversely, under the principle of upconversion, the coupled light is converted to light having a shorter wavelength, that of the photoluminescent structure 10 is decoupled. When from the photoluminescent structure 10 several different wavelengths of light are coupled simultaneously, these wavelengths of light can mix together and be expressed as multi-colored light.

In some embodiments, light that has been downconverted or upconverted may be used to excite one or more other photoluminescent materials included in the energy conversion layer 16 are to be used. The process of using converted light from a photoluminescent material for Excitation of another, etc., is commonly referred to as an energy cascade and can serve as an alternative to achieving different color expressions. In terms of both conversion principles, the wavelength difference between the exciting light and the converted light is referred to as Stokes shift and serves as the basic driving mechanism for a power conversion process corresponding to a light wavelength change. In the various embodiments discussed herein, any of the photoluminescent structures 10 act under one of the conversion principles.

The energy conversion layer 16 can be prepared by dispersing the photoluminescent material in a polymer matrix using various methods to form a homogeneous mixture. Such methods can produce the energy conversion layer 16 from a formulation in a liquid carrier medium and applying the energy conversion layer 16 to a desired substrate. The energy conversion layer 16 can by means of painting, screen printing, spraying, nozzle coating, dip coating, roller application and comma coating on a substrate 12 be applied. Alternatively, the energy conversion layer 16 produced by processes that do not use a liquid carrier medium. For example, the energy conversion layer 16 by dispersing the photoluminescent material into a solid solution (homogeneous mixture in a dry state) which may be integrated into a polymer matrix which may be formed by extrusion molding, injection molding, compression molding, calendering, thermoforming, etc. The energy conversion layer 16 may then be integrated into a substrate by any method known to those skilled in the art. When the energy conversion layer 16 Partial layers, each sub-layer can be applied sequentially to the energy conversion layer 16 train. Alternatively, the sublayers may be made separately and later to form the energy conversion layer 16 laminated or embossed. As a further alternative, the energy conversion layer 16 be formed by coextruding the partial layers.

Again referring to 1A and 1B can the photoluminescent structure 10 if desired, at least one stability layer 18 to protect the photoluminescent material inside the energy conversion layer 16 is included, prior to photolytic and heat degradation. The stability layer 18 may be configured as a separate layer that is optically associated with the energy conversion layer 16 coupled and adhesively connected. Alternatively, the stability layer 18 in the energy conversion layer 16 be integrated. The photoluminescent structure 10 can also on request a protective layer 20 include, visually with the stability layer 18 or another layer (eg, the conversion layer 16 in the absence of the stability layer 18 ) and adhesively bonded to the photoluminescent structure 10 to protect against physical and chemical damage due to environmental exposure. The stability layer 18 and / or the protective layer 20 can with the energy conversion layer 16 by sequential application or printing of each layer, sequential lamination or embossing, or other suitable means.

Additional information regarding the construction of photoluminescent structures 10 are revealed in the U.S. Patent No. 8,232,533 by Kingsley et al., entitled "PHOTOLYTICALLY AND ENVIRONMENTALLY STABLE MULTILAYER STRUCTURE FOR HIGH EFFICIENCY ELECTROMAGNETIC ENERGY CONVERSION AND SUSTAINED SECONDARY EMISSION", filed Nov. 8, 2011, the entire disclosure of which is hereby incorporated by reference. For additional information regarding the preparation and use of photoluminescent materials to achieve various light emissions is U.S. Patent No. 8,207,511 by Bortz et al., entitled "PHOTOLUMINESCENT FIBERS, COMPOSITIONS AND FABRICS MADE THEREFROM", filed June 5, 2009; U.S. Patent No. 8,247,761 by Agrawal et al., entitled "PHOTOLUMINESCENT MARKINGS WITH FUNCTIONAL OVERLAYERS", filed October 19, 2011; U.S. Patent No. 8,519,359 B2 by Kingsley et al., entitled "PHOTOLYTICALLY AND ENVIRONMENTALLY STABLE MULTILAYER STRUCTURE FOR HIGH EFFICIENCY ELECTROMAGNETIC ENERGY CONVERSION AND SUSTAINED SECONDARY EMISSION" filed Mar. 4, 2013; U.S. Patent No. 8,664,624 B2 by Kingsley et al., entitled "ILLUMINATION DELIVERY SYSTEM FOR GENERATING SUSTAINED SECONDARY EMISSION," filed Nov. 14, 2012; U.S. Patent Publication No. 2012/0183677 by Agrawal et al., entitled "PHOTOLUMINESCENT COMPOSITIONS, METHODS OF MANUFACTURE AND NOVEL USES", filed March 29, 2012; U.S. Patent Publication No. 2014/0065442 A1 by Kingsley et al., entitled "PHOTOLUMINESCENT OBJECTS", filed October 23, 2012; and U.S. Patent Publication No. 2014/0103258 A1 by Agrawal et al., entitled "CHROMIC LUMINESCENT COMPOSITIONS AND TEXTILES", filed December 19, 2013, incorporated herein by reference. which are incorporated herein by reference in their entirety.

Regarding 2 is a perspective view of a vehicle 22 shown a lighting system 24 configured to be a part of a vehicle engine compartment 26 to illuminate. The lighting system 24 can be a light source 28 standing on an interior surface 30 a periphery 32 of the engine compartment 26 is arranged, and a photoluminescent part 42 include. The photoluminescent part 42 contains at least one photoluminescent material. As discussed herein, the space may be 26 include a cover, which is a bonnet 34 , a cover, a lid or a flap configured to have an opening, such as a space of the vehicle 22 to include. In exemplary embodiments, the cover may be on a vehicle hood 34 that is configured to an engine compartment 26 include, and / or a trunk lid, a trunk lid, which is configured to include a cargo space relate. In alternative embodiments, the cover of a door flap or a door of a vehicle 22 correspond.

The light source 28 can be under a part of the periphery 32 of the engine compartment 26 positioned and configured to the vehicle engine compartment 26 to illuminate when the vehicle hood 34 in an open position. The light source 28 can be arranged as a strip and by means of a vehicle power supply 36 be supplied ( 3A ). In addition, the light source 28 one or more light emitting diodes 40 (LEDs) and may also include optics 38 which are configured to disperse or bundle light emitted therefrom. For example, the optics 38 for directing a first part of the light source 28 emitted light along a part of the periphery 32 used to the room 26 to backlight. A second part of from the light source 28 emitted light can be directed towards the engine compartment 26 and / or any components located therein. The light source 28 can be on any surface on the room 26 are located. According to one embodiment, the light source is located 28 around the periphery 32 of the space around the amount of heat in the operation of the vehicle 22 to reduce. If the hood 34 is closed, the light source can 28 additionally be arranged in the vicinity of a radiator or other cooling source, so that the light source 28 is not damaged by heat from the engine.

In some embodiments, multiple photoluminescent parts may be used 42 . 44 in the lighting system 24 are located. The light source 28 is configured to have a first wavelength of light 76 to uncouple ( 3 ). Each of the several photoluminescent parts 42 . 44 can be in response to the receipt of the light 76 light at the first wavelength and emit light having at least a second wavelength, as described above. In addition, any photoluminescent part 42 . 44 in response to a different wavelength of light, so that certain characteristics 46 be specifically illuminated.

The several photoluminescent parts 42 . 44 can have any number of features 46 in the vehicle engine room 26 are, correspond. In addition, any number of the photoluminescent parts can 42 . 44 on and / or in surfaces near the light source 28 located, such as on the inside surface 30 the hood 34 of the vehicle 22 , In the illustrated embodiment, the lighting system comprises 24 a first photoluminescent part 42 which is based on a share of the light source 28 and a second photoluminescent part 44 that is based on a feature 46 in the vehicle engine room 26 located. The first photoluminescent part 42 may correspond to a useful light configured to emit high intensity light to the engine compartment 26 to illuminate. The second photoluminescent part 44 may be configured to have the at least one feature 46 to illuminate, thereby helping a feature 46 in the engine compartment 26 to identify and / or illuminate.

Each of the several photoluminescent parts 42 . 44 may be one or more photoluminescent structures 10 which are configured in response to an excitation in response to the light source 28 emitted light 76 is generated to emit a specific light color. In some embodiments, a combination of photoluminescent structures 10 in the photoluminescent parts 42 . 44 be used to couple different wavelengths according to different light colors. For example, the useful light may be configured to emit a combination of red light, green light, and blue light to produce a light having a substantially white appearance. The lighting system 24 can provide various benefits, including a cost effective method of illuminating an engine compartment 26 and inclusion of general lighting in at least one feature 46 near the engine compartment 26 ,

Regarding 3A - 3C is a cross-sectional view of the light source 28 according to an embodiment capable of being attached to a vehicle 22 with an external photoluminescent part 42 to be used. As in 3A shown, the light source can be 28 a stacked arrangement comprising a light generating assembly 48 , a photoluminescent part 42 with a photoluminescent structure therein 10 , a visible part 50 and an over-molding material 94 holding the light generation assembly 48 and a part of the photoluminescent part 42 surrounds. It is understood that the visible part 50 and the over-molding material 94 two separate components or may be integrally formed as a single component.

The light generation assembly 48 may correspond to a thin film or pressure light emitting diode (LED) package and a substrate 52 include as the lowest layer. The substrate 52 may include a polycarbonate, polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET) material of the order of 0.005 to 0.060 inches in thickness, and is disposed over the intended vehicle surface on which the light source 28 is to be recorded (for example, inner surface 30 the vehicle hood 34 ). Alternatively, as a cost-saving measure, the substrate 52 directly correspond to a pre-existing vehicle structure (ie the periphery 32 of the engine compartment 26 , the inner surface of the hood 34 , Outer plates and / or inner plates).

The light generation assembly 48 includes a positive electrode 54 that over the substrate 52 is arranged. The positive electrode 54 includes a conductive epoxy, such as, but not limited to, a silver or copper containing epoxy. The positive electrode 54 is electrical with at least part of multiple LED sources 40 in a semiconductor printing ink 58 arranged and above the positive electrode 54 are applied, connected. Similar is also a negative electrode 60 electrically with at least a portion of the LED sources 40 connected. The negative electrode 60 is over the semiconductor ink 58 and includes a transparent or translucent conductive material, such as, inter alia, indium tin oxide. In addition, each positive and negative electrode 54 . 60 by means of a corresponding busbar 64 . 66 and conductive lines 68 . 70 electrically with a control 62 and an energy source 36 connected. The busbars 64 . 66 can along opposite edges of the positive and negative electrodes 54 . 60 printed, and the connection points between the busbars 64 . 66 and the conductive lines 68 . 70 can be on opposite corners of each busbar 64 . 66 to ensure a uniform distribution of current along the busbars 64 . 66 to favor.

The semiconductor printing ink 58 can through various printing processes, including inkjet printing with the ink 58 and screen printing processes on a selected part (s) of the positive electrode 54 be applied. In particular, it is provided that the LED sources 40 in the semiconductor printing ink 58 are dispersed. Furthermore, the LED sources 40 be sized and dimensioned such that a significant portion of it is with the positive and negative electrodes 54 . 60 during the deposition of the semiconductor ink 58 is aligned. The part of the LED sources 40 that ended up with the positive and negative electrodes 54 . 60 can be electrically connected by a combination of busbars 64 . 66 , Control 62 , Power supply 36 and conductive lines 68 . 70 be lit up. According to one embodiment, the power supply 36 a vehicle power supply 36 which operates at 12 to 16V DC. Additional information regarding the construction of light generating assemblies is available in the U.S. Patent Publication No. 2014/0264396 A1 von Lowenthal et al. entitled "ULTRA-THIN PRINTED LED LAYER REMOVED FROM SUBSTRATES", filed Mar. 12, 2014, the entire disclosure of which is incorporated herein by reference.

Still referring to 3A is the first photoluminescent part 42 as described above as a coating, layer, film or other suitable deposition over the negative electrode 60 arranged. With reference to the presently illustrated embodiment, the photoluminescent part 42 are arranged as a multi-layered structure comprising an energy conversion layer 16 , if desired, a stability layer 18 and on request a protective layer 20 includes. The photoluminescent part 42 is arranged in a patterned manner, with translucent parts 72 between. Thus, a first part of light occurs 76 that from the light source 28 is emitted through the photoluminescent part 42 while a second part of the from the light source 28 emitted light 76 not by the photoluminescent part 42 occurs and thus in the direction of the engine compartment 26 is emitted without taking it to a different wavelength than that of the light source 28 emitted to convert.

The energy conversion layer 16 includes a photoluminescent material having energy conversion elements with phosphorescent or fluorescent properties. For example, the photoluminescent material may include organic or inorganic fluorescent dyes, including rylenes, xanthenes, porphyrins, phthalocyanines. Additionally or alternatively, the photoluminescent material may include phosphors from the group of Ce-doped garnets, such as YAG: Ce, include. The energy conversion layer 16 can by means of painting, screen printing, flexographic printing, spraying, nozzle coating, dip coating, roller application and comma coating on the negative electrode 60 be applied. Alternatively, the energy conversion layer 16 produced by processes that do not use a liquid carrier medium. For example, the energy conversion layer 16 by dispersing the photoluminescent material into a solid solution (homogeneous mixture in a dry state) which may be integrated into a polymer matrix formed by extrusion molding, injection molding, compression molding, calendering, thermoforming, etc.

To protect the photoluminescent material contained in the energy conversion layer 16 is included, before photolytic and heat degradation, the photoluminescent part 42 the stability layer 18 include. The stability layer 18 may be configured as a separate layer optically coupled to the energy conversion layer and adhesively bonded or otherwise integrated in the energy conversion layer. The photoluminescent part 42 can also be the protective layer 20 Contain that visually with the stability layer 18 or another layer (eg, the energy conversion layer 16 in the absence of the stability layer 18 ) and adhesively bonded to the photoluminescent part 42 to protect against physical and chemical damage due to environmental exposure.

In operation, the photoluminescent material is in each photoluminescent part 42 . 44 so formulated that the coupled light 76 undergoes an energy conversion process and with a different wavelength 78 is emitted again. In one embodiment, the photoluminescent material may be formulated to be coupled light 76 in light with a longer wavelength 78 converts what is otherwise known as downconverting. Alternatively, the photoluminescent material may be formulated to be coupled light 76 in light with a shorter wavelength 78 converted, which is also called upconversion. In both approaches, the light converted by the photoluminescent material can 78 directly from the photoluminescent part 42 be decoupled or otherwise used in an energy cascade, wherein the converted light 78 serves as a coupled light to another formulation of one within the energy conversion layer 16 arranged photoluminescent material, whereby the subsequent converted light then from the photoluminescent part 42 can be decoupled or used as injected light and so on. In view of the energy conversion processes described herein, the wavelength difference between the injected light becomes 76 and the converted light 78 referred to as Stokes shift, serving as the basic drive mechanism for a power conversion process corresponding to a wavelength change of light.

Further referring to 3A is the visible part 50 over the first photoluminescent part 42 and translucent parts 72 arranged. In some embodiments, the visible part 50 be a plastic, silicon or urethane material, which over the first photoluminescent part 42 and the light generation assembly 48 is formed. Preferably, the visible part should be 50 with respect to that of the first photoluminescent part 42 decoupled converted light 78 be transparent or at least translucent. That way, the visible part becomes 50 from the first photoluminescent part 42 enlightened as soon as an energy conversion process is underway. In addition, by overmolding the visible part 50 this also as protection for the photoluminescent structure and the light generation assembly 48 act. The visible part 50 may be arranged in a planar shape and / or a curved shape to increase its visibility potential when in a luminous and / or luminescent state. Like the first photoluminescent part 42 and the light generation assembly 48 can also be the visible part 50 benefit from a thin design, which contributes to the light source 28 in small package rooms of the vehicle 22 fits (eg on the inner surface 30 the hood 34 ).

Alternatively, in some embodiments, a decorative layer 74 between the visible part 50 and the first photoluminescent part 42 and translucent parts 72 be arranged. The decorative layer 74 may include a polymeric material or other suitable material and is configured to be a manifestation of the visible portion 50 the light source 28 to control or change. For example, the decorative layer 74 be configured to the visible part 50 to give a metallic appearance when the visible part 50 in an unlit condition. In other embodiments, the decorative layer 74 be tinted in any color to the structure of the vehicle 22 at the light source 28 should be included. In any case, the decorative layer should 74 be transparent or at least translucent, so that the photoluminescent part 42 or the light source (s) 28 is not prevented from doing so, the visible part 50 to illuminate when the light source (s) 28 lights up / lights.

The decorative layer 74 can also provide information about the vehicle 22 or over features included 46 provide. For example, in the decorative layer 74 Text can be arranged, the same photoluminescent material as the feature 46 which the text describes involves, causing for the features 46 a key is generated in response to the light source 48 luminescent. According to one embodiment includes an oil cover 82 ( 5A ) a photoluminescent part located thereon 44 , In the decorative layer 74 may be text with the same photoluminescent material therein, so that a user quickly the position of the oil cap 82 as well as the purpose of the container, the lid 82 covered, can identify.

The overmolding material 94 is located around the light generation assembly 48 and the photoluminescent part 42 around. The overmolding material 94 can the light generation assembly 48 protect against several environmental conditions, such as preventing moisture from the light-generating assembly 48 impaired. The overmolding material 94 may have viscoelasticity (both viscosity and elasticity), a low modulus of elasticity and / or high elongation at break compared with other materials, so that the overmolding material 94 the light generation assembly 48 protect against contact.

In addition, it is provided that the photoluminescent part 42 on the light generation assembly 48 and / or separately and remote from the light generation assembly 48 can be used. For example, the photoluminescent part 42 at a vehicle feature 46 or a surface that is close to the light generation assembly 48 is located, but not in contact, as described herein, be positioned. It is understood that any additional photoluminescent parts 44 a similar structure as the photoluminescent part 42 which is based on a share of the light source 28 may have.

Regarding 3B According to one embodiment, it is a light generation assembly 48 shown in which the first photoluminescent part 42 on a share or part thereof. The first photoluminescent part 42 is configured from the LED sources 40 received coupled light 76 in visible light 78 with a different wavelength than that to the injected light 76 appropriate wavelength to convert. In particular, the first photoluminescent part 42 formulated to have an absorption spectrum that matches the emission wavelength of the injected light 76 That includes the LED sources 40 is delivered. The photoluminescent material is also formulated to have a Stokes shift, resulting in the converted visible light 78 has an emission spectrum expressed in a desired color, which may vary depending on the lighting application. The converted visible light 78 is by means of the visible part 50 from the light generation assembly 48 decoupled, reducing the visible part 50 in the desired color lights. In one embodiment, the first photoluminescent part utilizes 42 the down conversion, which causes the injected light 76 Light at the lower end of the visible spectrum, such as blue, violet or ultraviolet (UV) light. This allows blue, violet or UV LEDs as LED sources 40 which may offer a relative cost advantage over a situation where LEDs of the desired color are simply used and the energy conversion process is completely eliminated. It also offers the visible part 50 provided lighting a unique and appealing viewing experience that can be difficult to reproduce using non-photoluminescent means.

The first photoluminescent part 42 can account for only a fraction of the light generation assembly 48 be applied. Translucent parts 72 that's from the LED sources 40 emitted light 76 at the first wavelength, may be placed at the locations that comprise the first photoluminescent portion 42 do not include. At the translucent parts 72 it can be an open space or a transparent or translucent material that is from the light source 28 emitted light 76 lets through. That through the translucent parts 72 emitted light 76 can from the light generation assembly 48 in the direction of the vehicle engine compartment 26 be steered. As described herein may features 46 in the vehicle engine room 26 photoluminescent parts 44 arranged therein in response to that of the light generating assembly 48 emitted and through the translucent parts 72 steered light 76 luminesce.

In relation to 3C is an alternative embodiment of the light generation assembly 48 and the first photoluminescent part 42 shown. In this embodiment, the first photoluminescent part is located 42 over a considerable part of the negative electrode 60 the light generation assembly 48 , In addition, it is understood that the energy conversion layer 16 may include more than one photoluminescent material, in which case the teachings provided herein apply similarly. In one embodiment, the second energy conversion process is by downconversion using blue, violet and / or UV light as excitation source instead.

With reference to the presently illustrated embodiment, the excitation of photoluminescent material is formulated such that a portion of the light generating assembly 48 emitted light 76 through the first photoluminescent part 42 at the first wavelength (ie that from the light generation assembly 48 emitted light 76 is not from the first photoluminescent part 42 converted). The intensity of the emitted light 76 can be modified by pulse width modulation or current control to match that of the LED sources 40 emitted amount of light 76 that converts to a second wavelength without conversion 78 through the first photoluminescent part 42 goes through, change. If z. B. the light source 28 configured to the light 76 At a low level, it can emit essentially all the light 76 in the second wavelength 78 be converted. In this configuration, a light color corresponding to the first photoluminescent part 42 corresponds, from the light generation module 48 emitted and for use as useful light in the direction of the engine compartment 26 be steered. If the light source 28 configured to the first wavelength 76 Uncoupling at a high level may only be part of the first wavelength 76 from the first photoluminescent part 42 be converted. In this configuration, a first portion of the emitted light 76 from the first photoluminescent part 42 can be converted and a second portion of the light 76 from the light generation assembly 48 with the first wavelength in the direction of the additional photoluminescent parts 44 in the vehicle engine room 26 be emitted.

When formulating the photoluminescent materials, care should be taken in choosing the associated Stokes shifts that the converted light emitted by one of the photoluminescent materials 78 does not excite another photoluminescent part unless it is desired. According to one embodiment, a first part of the LED sources is exemplified as LED sources 40 is shown, configured to be coupled light 76 having a wavelength containing the photoluminescent material in the first photoluminescent part 42 stimulates and causes the coupled light 76 in a visible light 78 a first color (eg white) is converted. Similarly, a second part of the LED sources is exemplified as LED sources 80 is shown, configured to be coupled light 76 to emit, which has a wavelength passing through the translucent parts 72 of the first photoluminescent part 42 passes through and additional, in the engine compartment 26 located photoluminescent parts 44 stimulates, which thus shine in a second color. The first and second colors may be optically distinguishable from each other. That way, the LED sources can 40 . 80 using the control 62 are selectively activated so that the photoluminescent structure is caused to luminesce in different colors. The control 62 can z. For example, only the LED sources 40 activate only the first photoluminescent part 42 excite, which causes the visible part 50 in the first color lights. Alternatively, the controller 62 only the LED sources 80 activate to only those in the engine compartment 26 located photoluminescent parts 44 . 82 stimulate, resulting in minimal illumination of the visible part 50 and luminescence of the desired features 46 in the engine compartment 26 leads. As yet another alternative, the controller 62 the LED sources 40 . 80 activate together, which causes any of the photoluminescent parts 42 . 44 . 82 is excited, which causes the visible part 50 and the features 46 in the engine compartment 26 light up at the same time. Applicable colors include red, green, blue, and combinations thereof, including white, all by selection of the appropriate photoluminescent materials and proper manipulation of the corresponding LED sources 40 . 80 can be obtained.

The light generation assembly 48 can also optics 38 or lenses configured to be that from the LED sources 40 . 80 emitted light 76 and that of the first photoluminescent part 42 emitted light 78 to direct to predetermined places. That from the LED sources 40 . 80 and the first photoluminescent part 42 emitted light 76 can z. B. in the direction of a desired feature 46 and / or a desired location in the vehicle engine compartment 26 be directed and / or focused.

Regarding 4 is a light generation assembly 48 according to one embodiment, shown in a plan view showing various types and concentrations of LED sources 56 across the light generation assembly 48 having. As shown, a first part includes 98 the light generation assembly 48 LED sources 56 that exemplifies as LED sources 56a shown and configured to be coupled light 98 with an emission wavelength in a spectrum of a first color (for example white) to emit. Similarly, a second part includes 100 the light generation assembly 48 LED sources 56 that exemplifies as LED sources 56b shown and configured to be coupled light 98 having an emission wavelength in a spectrum of a second color (eg, red). The first and second parts of the light generation assembly 48 can by insulating or non-conductive barriers 102 be separated from nearby parts by any means known in the art, so that each part 98 . 100 regardless of any other part 98 . 100 can be illuminated. Furthermore, anyone within the light generation assembly 48 arranged part 98 . 100 a respective busbar 64 . 66 . 104 . 106 . 108 . 110 included in the control 62 coupled and configured to each corresponding part 98 . 100 to illuminate.

Preferably, the first and second colors are optically distinguishable from each other. That way, the LED sources can 56a and 56b using the control 62 be specifically activated to the LED sources 56a . 56b shine in different colors. The control 62 could z. For example, only the LED sources 56a activate to only one part 98 the light generation assembly 48 to light in the first color. Alternatively, the controller could 62 only the LED sources 56b activate to only one part 100 the light generation assembly 48 in the second color to light. It is understood that the light generation assembly 48 any number of parts 98 . 100 , the varying LED sources 56a . 56b that may be lit in any desired color. It should also be recognized that the parts that have varying LED sources 56a . 56b have to be oriented in any applicable manner and need not be located adjacent.

As described above, a photoluminescent structure 42 on a part of the light generation assembly 48 be arranged. If desired, any of the LED sources 56a . 56b for exciting any photoluminescent material 10 , the near and / or the light source 28 is arranged to be used.

The semiconductor printing ink 58 can also have different concentrations of LED sources 56a . 56b included, so the density of the LED sources 56a . 56b or the number of LED sources 56a . 56b per unit area can be set for different lighting applications. In some embodiments, the density of the LED sources 56a . 56b over the length of the light source 28 vary. A middle section 100 the light generation assembly 48 can z. B. a greater density of LED sources 56 as the peripheral parts 98 or vice versa. In such embodiments, the light source 28 appear brighter or have a greater luminance to illuminate predetermined locations with preference. In other embodiments, the density of the LED sources 56a . 56b increase or decrease with increasing distance from a preselected point. In some embodiments, the LED sources 56 and the semiconductor ink 58 by Nth Degree Technologies Worldwide Inc.

Regarding 5A can the light source 28 be configured to from the light source 28 emitted light 76 in the direction of the photoluminescent parts 42 . 44 and / or the vehicle engine compartment 26 to steer. The light source 28 can, for example, with the periphery 32 of the vehicle compartment 26 be connected such that the of the light source 28 emitted light 76 centrally on the engine compartment 26 and at the same time down along the periphery 32 is focused. The centrally focused light can be features in the room 26 illuminate. The downwardly directed light can provide backlighting for the room 26 provide.

In response to the receipt of the light source 28 emitted light 76 through the first photoluminescent part 42 can the energy conversion layer 16 be excited and light 78 emit at a second wavelength. As previously discussed, the light can 78 comprise a plurality of wavelengths at a second wavelength to produce a significantly white light. The light 78 with a second wavelength is generally so in the direction of the engine compartment 26 steered that several characteristics 46 can be illuminated. The useful light configuration of the first photoluminescent part 42 Can be used throughout the engine compartment 26 provide uniform illumination.

That from the light source 28 emitted light 76 gets further from the light source 28 in the engine compartment 26 steered to a conversion layer 16 in one or more photoluminescent parts 44 . 82 which is applied as a coating and / or in a matrix (eg, the polymer matrix) of any number of the plurality of spaces or features 46 in the engine compartment 26 located. For example, the second photoluminescent part 44 be integrated on an air inlet and an engine cover; the third photoluminescent part 82 can be integrated on a liquid container lid. In response to receiving the light 76 with the first wavelength, each of the multiple photoluminescent parts 42 . 44 . 82 be stimulated. The excitation may be the second photoluminescent part 44 cause light with other wavelengths than that of the light source 28 emitted light 76 to emit.

Although the multiple photoluminescent parts 42 . 44 . 82 Specifically, with reference to four exemplary parts, the plurality of photoluminescent parts 42 . 44 . 82 according to other embodiments, any number of parts near the engine compartment 26 correspond. Each of the several photoluminescent parts 42 . 44 . 82 may further comprise various energy conversion layers comprising different photoluminescent materials configured in response to that from the light source 28 emitted light 76 to emit a wide variety of colors. As such, the lighting system 24 used in various settings to provide useful light and / or any number of features 46 to illuminate and highlight.

The several features 46 can do anything on the vehicle 22 related feature 46 , which is generally near the engine compartment 26 and / or the cover (eg the hood 34 ). Any of the several features 46 can be a photoluminescent structure 10 which is applied as a coating and / or dispersed in a material structure in response to being emitted from the light source 28 emitted light 76 receive, shine and light 78 can emit. Each of the photoluminescent parts 42 . 44 . 82 can glow in a single color or in multiple colors to give a desired color palette and color appearance to illuminate the multiple features 46 provide. The photoluminescent parts 44 . 82 may also be used to provide one or more of the multiple features 46 for easy identification during maintenance.

Regarding 5A and 5B is the lighting system 24 shown in which a light generating assembly 48 on a vertical interior surface 30 the vehicle engine room wall 96 is arranged. The light generation assembly 48 can by any known means with the wall 96 coupled, such as by an adhesive on the back of the light-generating assembly 48 , Alternatively, it can be on the back of the light-generating assembly 48 a magnet are located, leaving the light-generating assembly 48 to a desired location in the engine compartment 26 moved and can be coupled with it.

As described above, the light generation assembly 48 multiple LED sources 40 . 80 include. The light generation assembly 48 can be configured to be useful light around any part of the room 26 to act, and / or may be configured to photoluminescent parts 44 . 82 that are in several characteristics 46 in the engine compartment 26 to stimulate.

In some implementations, at least one fluid fill cap may be present 82 , a dipstick and / or any other feature 46 a photoluminescent part 44 which is configured to emit an identifying color. The identifying color may be in response to that feature 46 from the light source 28 emitted light 76 receives, be emitted. The identifying color may be configured to correspond to a color as described in a vehicle user manual or in maintenance manuals. In some implementations, the plurality of photoluminescent parts 42 . 44 . 82 correspond to a plurality of identifying colors, wherein the colors for identifying, categorizing and / or are configured to provide that a first feature 46 with a first color of a second feature 46 visibly distinguishable with a second color. In this way, the lighting system 24 provide added value by providing decorative lighting used in the identification of various features 46 near the engine compartment 26 arranged, can help.

Regarding 5B is an exemplary cross section of the lighting system 24 shown with a lower surface around the periphery 32 of the engine compartment 26 connected is. The lighting system 24 includes a light generation assembly 48 , similar to the one in 3A described, with an outer part 112 on which is the first photoluminescent part 42 located. Under lighting, the outdoor unit can 112 Backlight for the engine compartment 26 provide.

The inner part 114 the light generation assembly 48 can be a translucent part 72 involve, causing light from the light-generating assembly 48 with the first wavelength 76 is emitted. The light emitted at the first wavelength 76 can in the direction of characteristics 46 in the engine compartment 26 be steered, on which photoluminescent parts 44 located in response to the emitted light 76 to shine. The light 76 can through the use of optics 38 directed towards predetermined locations, as described above. Furthermore, the optics used 38 divert a portion of the light in a direction that is up to 180 degrees from other parts of the light-generating assembly 48 emitted light is offset. In some embodiments, the light source 28 vertically above the majority of features 46 in the engine compartment 26 be arranged so that the light source 28 any position in the room 26 can illuminate. It is understood that the lighting system 24 attached to any position of the room and / or can be connected to it. In addition, it should be understood that any number of light portions may be directed in any desired direction.

Regarding 6 is a block diagram of a vehicle 22 shown in which the lighting system 24 is implemented. The lighting system 24 includes a controller 62 that with the light source 28 is in communication. The control 62 can a memory 86 include instructions contained by a processor 90 the controller 62 be executed. The control 62 can have a power supply 36 that are in the vehicle 22 located, electrical energy to the light source 28 or a respective busbar 64 . 66 deliver. In addition, the controller 62 be configured to that of any light source 28 decoupled light 76 based on feedback provided by one or more vehicle control modules 88 is received, such as, but not limited to, a body control module, engine control module, steering control module, brake control module, the like, or a combination thereof. By controlling the of the light source 28 decoupled light 76 can the lighting system 24 in various colors and / or patterns to provide an aesthetic appearance, or vehicle information may be conveyed to a targeted viewer. If, for example, a vehicle hood 34 ajar, the light generating assembly can 48 lights and / or features 46 in the engine compartment 26 can shine or be excited.

In operation, any photoluminescent part 42 . 44 have a constant monochrome or multi-colored lighting. The control 62 For example, the light source 28 induce only the first wavelength of light 76 by means of an LED 56 to emit to cause a photoluminescent part 42 . 44 in the first color (for example white) lights up. Alternatively, the controller 62 the light source 28 induce only the second wavelength of light across the LED 80 to emit to cause the photoluminescent parts 42 . 44 in the second color (for example red) light up. As yet another alternative, the controller 62 the light source 28 cause it to simultaneously emit the first and second wavelengths of light to cause the photoluminescent parts 42 . 44 in a third color (for example, pink) defined by additive mixing of the first and second colors. In addition, additional photoluminescent parts 82 to the lighting system 24 be added to that from the light source 28 emitted light 76 convert to another wavelength.

In a further embodiment, the lighting system 24 a user interface 92 include. The user interface 92 can be configured to give a user the wavelength of light 76 that from the LEDs 40 is emitted, and / or the luminous LEDs can control. Such a configuration may allow a user to control which features 46 light up to help him find a desired feature 46 (for example, oil lid 82 ) to help. The user interface 92 may be in the passenger compartment of the vehicle 22 or on any surface that may be present to the user during use of the presently described lighting system 24 is accessible. The user interface 92 can be used to control the light source 28 use any type of control known in the art, such as, but not limited to, proximity sensors.

In an alternative embodiment, the photoluminescent parts 42 . 44 periodically have monochrome or multi-colored lighting. For example, the controller 62 the light source 28 periodically cause only the first wavelength of light and intensity of light 76 over the LEDs 40 to emit to cause the photoluminescent parts 42 light up periodically in the first color. Alternatively, the controller 62 the light source 28 periodically cause only the second wavelength of light via the LED 80 to emit to cause the photoluminescent parts 42 . 44 periodically glow in the second color. Alternatively, the controller 62 the light source 28 to simultaneously and periodically emit the first and second wavelengths of light to cause the photoluminescent parts 42 . 44 periodically illuminate in a third color defined by additive mixing of the first and second colors. As yet another alternative, the controller 62 the light source 28 to switch between periodic emission of the first and second wavelengths of light to cause the photoluminescent portion 42 periodically lit between the first and second colors. The control 62 can the light source 28 to periodically emit the first and / or second wavelengths of light at a regular time interval and / or an irregular time interval.

With regard to the above examples, the controller may 62 modify the intensity of the emitted first and second wavelengths of light by pulse width modulation or current control. In some embodiments, the controller may 62 be configured to a color of the emitted light by emitting control signals for adjusting an intensity or energy output level of the light source 28 adjust. For example, if the light source 28 is configured to output the first emission at a low level, can substantially all the injected light 76 in the decoupled visible light 78 be converted. If the light source 28 configured to the injected light 76 To emit at a high level may only be part of the injected light 76 from the photoluminescent part 42 in the decoupled light 78 converted become. In this configuration, a light color corresponding to a mixture of injected light 76 and disconnected light 78 be emitted as emitted light. That way, any of the controllers 62 control an output color of the emitted light.

Although in terms of the coupled light 76 An intensity of low level and high level is discussed, it is understood that the intensity of the injected light 76 can be varied at different intensity levels to a hue corresponding to that of the lighting system 24 adjust emitted light. As described herein, the color of the outcoupled light 78 essentially from the respective photoluminescent structures 10 that in the photoluminescent part 42 be used. In addition, a conversion capacity of the photoluminescent part 42 significantly from a concentration of in the photoluminescent part 42 used photoluminescent structures 10 depend. By adjusting the range of intensities emitted by the light source 28 can be emitted, the concentration and proportions of the photoluminescent structures 10 in the photoluminescent part 42 and the photoluminescent portion discussed herein 42 used types of photoluminescent materials to function, a range of hues of the emitted light by mixing the injected light 76 with the decoupled light 78 to create. It is also necessary to provide that the intensity of each light source 28 simultaneously or independently of any number of other light sources 28 can be varied.

Accordingly, an illuminated room lighting system has been advantageously described herein. The lighting system may provide various benefits, including a simple and inexpensive means of generating various lights that may be used as a styling feature and / or to assist an occupant in using the illuminated engine compartment assembly.

In addition, it is important to note that the construction and arrangement of the elements of the disclosure, as shown in the embodiments, are merely illustrative. Although only a few embodiments of the present innovations have been described in detail in this disclosure, those skilled in the art having a thorough understanding of this disclosure will readily appreciate that many modifications are possible (eg, variations in sizes, dimensions, structures, shapes, and proportions of the various elements Values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the listed subject matter. For example, elements that are shown to be integrally formed may be constructed of multiple parts, or elements that are shown to consist of multiple parts may be integrally formed, the function of the interfaces may be reversed or otherwise different, the length or width of the Structures and / or links or connectors or other elements of the system may be different, the type or number of adjustment positions provided between the elements may be different. It should be understood that the elements and / or assemblies of the system may be constructed from any of a wide variety of materials that provide sufficient strength or durability and in any of a wide variety of colors, textures, and combinations. Accordingly, all such modifications are intended to be included within the scope of the present innovations. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the desired and other embodiments without departing from the spirit of the present innovations.

It is understood that all described processes or steps within described processes may be combined with other disclosed processes or steps to form structures within the scope of the present disclosure. The exemplary structures and processes disclosed herein are for illustrative purposes and are not to be construed as limiting.

It is understood that changes and modifications may be made to the above structure without departing from the concepts of the present invention, and further, it should be understood that such concepts are intended to be covered by the following claims, unless there is a claim expressly something else.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 8232533 [0028]
• US 8207511 [0028]
• US 8247761 [0028]
• US 8519359 B2 [0028]
• US 8664624 B2 [0028]
• US 2012/018367 [0028]
• US 2014/0065442 A1 [0028]
• US 2014/0103258 A1 [0028]
• US 2014/0264396 A1 [0037]

Claims (20)

 Illuminated space for a vehicle comprising: a light generation assembly; a first luminescent portion located on the light-generating assembly and configured to luminesce in response to an excitation by the light-generating assembly; and a second luminescent portion located on a feature in a vehicle engine compartment and configured to luminesce in response to an excitation by the light generation assembly.  Illuminated space for a vehicle according to claim 1, wherein the light-generating assembly comprises a printed LED.  The illuminated space for a vehicle of claim 2, wherein the light generating assembly comprises a plurality of LED sources and the first and second luminescent portions comprise at least one photoluminescent material, each photoluminescent material configured to receive input light received from at least a portion of the plurality of LED sources to convert down to visible light.  The illuminated space for a vehicle according to claim 3, wherein the coupled light comprises a blue light, a violet light or a UV light.  The illuminated space for a vehicle according to claim 1, wherein the first photoluminescent part partially covers an upper surface of the light-generating assembly.  The illuminated room for a vehicle according to claim 1, further comprising a controller for controlling an activation state of the light-generating assembly in response to at least one vehicle-related condition.  The illuminated room for a vehicle according to claim 6, wherein the controller determines a light emission intensity and / or a light emission duration of the light generation assembly.  The illuminated space for a vehicle according to claim 1, wherein the light emitted from the light generating assembly comprises a blue light, a violet light or a UV light.  A lighting system for a vehicle comprising: a printed LED that can be coupled to a vehicle surface; a first photoluminescent structure partially covering the printed LED and configured to luminesce in response to an excitation from the printed LED; a translucent member disposed adjacent to the first photoluminescent structure; and a second photoluminescent structure configured to luminesce in response to light emitted by the printed LED.  The illumination system of claim 9, wherein the second photoluminescent structure is disposed on a feature in an engine compartment to receive light from the printed LED via the light transmissive member.  The illumination system of claim 9, wherein the first photoluminescent structure illuminates in a first color and the second photoluminescent structure illuminates in a second color.  The lighting system of claim 9, wherein the printed LED is disposed on a vehicle trunk and the second photoluminescent structure is disposed proximate the trunk of the vehicle.  The illumination system of claim 12, wherein the second photoluminescent structure is configured to emit light upward as it is excited by the printed LED.  Illuminated room comprising: a light generating assembly that emits light at a first wavelength; a first photoluminescent member disposed over the light-generating assembly and configured to luminesce in response to an excitation from the light-generating assembly, wherein a portion of the light passes through the photoluminescent structure at the first wavelength; and a second photoluminescent portion disposed in the space and luminescent in response to the first wavelength light.  The illuminated room of claim 14, wherein the light-generating assembly comprises a printed LED.  The illuminated room of claim 14, wherein the light generating assembly is coupled to a hood.  The illuminated room of claim 14, wherein the light-generating assembly is connected to a vertical inner wall surrounding the engine compartment.  The illuminated room according to claim 14, wherein the light generating assembly is disposed in the vicinity of a front part of an engine room. The illuminated room of claim 14, further comprising a controller configured to selectively illuminate the light-generating assembly.  The illuminated room of claim 14, wherein the light generating assembly comprises a plurality of LED sources, and the photoluminescent structure comprises at least one photoluminescent material, wherein the at least one photoluminescent material is configured to down-convert received light received from at least a portion of the plurality of LED sources into visible light to convert.

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