RU2705544C2 - Vehicle - Google Patents

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Publication number
RU2705544C2
RU2705544C2 RU2016113056A RU2016113056A RU2705544C2 RU 2705544 C2 RU2705544 C2 RU 2705544C2 RU 2016113056 A RU2016113056 A RU 2016113056A RU 2016113056 A RU2016113056 A RU 2016113056A RU 2705544 C2 RU2705544 C2 RU 2705544C2
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RU
Russia
Prior art keywords
vehicle
light source
tailgate
bumper
light
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Application number
RU2016113056A
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Russian (ru)
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RU2016113056A3 (en
RU2016113056A (en
Inventor
Стюарт С. САЛТЕР
Пол Кеннет ДЕЛЛОК
Джеймс Дж. СЕРМАН
Original Assignee
ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи
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Priority to US14/687,972 priority Critical patent/US9809160B2/en
Priority to US14/687,972 priority
Application filed by ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи filed Critical ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи
Publication of RU2016113056A publication Critical patent/RU2016113056A/en
Publication of RU2016113056A3 publication Critical patent/RU2016113056A3/ru
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/26Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/56Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for illuminating registrations or the like, e.g. for licence plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/02Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/24Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments for lighting other areas than only the way ahead
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/26Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/30Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
    • B60Q1/302Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces mounted in the vicinity, e.g. in the middle, of a rear window
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/30Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for compartments other than passenger or driving compartments, e.g. luggage or engine compartments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/68Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using ultra-violet light

Abstract

FIELD: machine building.SUBSTANCE: group of inventions relates to the field of transport machine building. According to the first embodiment, the vehicle contains a cargo platform, a bumper, a rear tailgate and an illumination system. Bumper is located behind the cargo platform. Rear flap board forms recessed surface. Illumination system comprises first optically interactive section arranged on cargo platform, second optically interactive section arranged on tailgate and light source. Light source is located on the recessed surface of the rear tailgate. According to the second embodiment, the vehicle contains an illumination system which illuminates the bumper when the rear flap side is in the closed position and illuminates the cargo space when the rear flap side is in the open position. According to the third embodiment, vehicle contains light source, in which optically interactive section and light source are made with possibility of joint illumination of cargo space and bumper.EFFECT: improved illumination of cargo space and bumper of vehicle.19 cl, 7 dwg

Description

CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a partial continuation of US patent application No. 14 / 603,636, filed January 23, 2015, under the name "DOOR ILLUMINATION AND WARNING SYSTEM", which is a partial continuation of the application for US patent No. 14 / 086,442, filed November 21 2013, entitled "VEHICLE DOME LIGHTING SYSTEM WITH PHOTOLUMINESCENT STRUCTURE. The aforementioned related applications are incorporated herein by reference in their entirety.
FIELD OF THE INVENTION
[0002] The present disclosure generally relates to vehicle lighting systems, and more particularly, to vehicle lighting systems employing one or more photoluminescent structures.
BACKGROUND OF THE INVENTION
[0003] The illumination arising from photoluminescent materials provides a unique and favorable visual perception. In this regard, it is desirable to include such photoluminescent materials in sections of vehicles to provide directional lighting.
SUMMARY OF THE INVENTION
[0004] According to one aspect of the present invention, a backlight system for a vehicle having a cargo platform forming a cargo space, a bumper located at the rear of a vehicle cargo platform, a rear hinged side forming a recessed surface, pivotable between substantially open and substantially closed positions, includes the first optically interactive section located on the cargo platform, and the second optically interactive section located on the rear hinged Horta. The light source is located on the recessed surface of the tailgate. The light source and the first and second optically interactive surfaces are configured to illuminate the cargo space when the tailgate is in a substantially open position, and downwardly illuminate when the tailgate is in a substantially closed position.
In an additional aspect, the illumination system further comprises a trailer coupling device mounted under the bumper, wherein the light source and the first and second optically interactive sections are configured to co-illuminate the trailer coupling device.
In another further aspect, the first and second optically interactive regions include at least one of the photoluminescent region and the reflective element.
In yet a further aspect, the second optically interactive portion is a reflective element arranged to reflect light into the cargo area when the tailgate is in a substantially open position.
In yet a further aspect, the first optically interactive portion comprises a photoluminescent material configured to emit light between the rear tailgate and the bumper.
In yet a further aspect, the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
In yet a further aspect, the light source has an increased density of light emitting diodes in the vicinity of the bumper license plate region.
[0005] According to another aspect of the present invention, the vehicle includes a cargo platform defining a cargo space, a bumper located at the rear of a vehicle cargo platform, a rear hinged side functioning between a substantially open position and a substantially closed position, and a backlight system. The backlight system includes a light source that illuminates in a downward direction when the tailgate is in the closed position, and illuminates the cargo area when the tailgate is in the open position.
In an additional aspect, the light source is located on the tailgate at about the same height or below the horizontal axis.
In another further aspect, the vehicle further comprises a first optically interactive portion located on the loading platform and configured to illuminate between the rear tailgate and the bumper and the bumper license plate area; and a second optically interactive section located on the tailgate and configured to illuminate the cargo area.
In yet a further aspect, the second optically interactive portion is a reflective element configured to reflect light.
In yet a further aspect, the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
In yet a further aspect, the light source has an increased density of light emitting diodes in the vicinity of the license plate region.
[0006] According to another aspect of the present invention, the vehicle includes a loading platform with an optically interactive portion located thereon, a bumper located at the rear of the loading platform of the vehicle and forming a license plate region, a trailer coupling device mounted under the bumper, and a light source located on the tailgate. The optically interactive section and the light source are configured to jointly illuminate the bumper license plate region and the trailer coupling device.
In a further aspect, the tailgate functions between a substantially open position and a substantially closed position, the light source illuminating the cargo area when the tailgate is in the open position and illuminating the bumper in the closed position.
In another further aspect, the optically interactive portion includes at least one of a photoluminescent portion and a reflective element.
In yet a further aspect, the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
In yet a further aspect, the light source has a high density of light emitting diodes in the vicinity of the bumper license plate region.
In yet a further aspect, the second reflective element is located on the rear hinged side and is configured to reflect light to the cargo platform when the rear hinged side is in a substantially horizontal position.
In yet a further aspect, a second optically interactive portion, which is reflective, is located on the tail flap near the light source.
[0007] These and other aspects, objects, and features of the present invention will be understood and taken into account by a person skilled in the art when studying the following description, claims, and the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] IN THE DRAWINGS:
[0009] FIG. 1 illustrates a rear perspective view of a vehicle according to one embodiment;
[0010] FIG. 2A is a sectional view taken along line II-II of FIG. 1, according to one embodiment;
[0011] FIG. 2B is a sectional view taken along line II-II of FIG. 1, according to a further embodiment;
[0012] FIG. 3A is a sectional view taken along line III-III of FIG. 2B illustrating a light source according to one embodiment;
[0013] FIG. 3B is a sectional view taken along line III-III of FIG. 2B, further illustrating an energy conversion process for creating a single color according to one embodiment;
[0014] FIG. 3C is a sectional view taken along line III-III of FIG. 2B, further illustrating an energy conversion process for creating one or more colors according to one embodiment; and
[0015] FIG. 4 is a block diagram illustrating a backlight system of a vehicle and a tailgate.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0016] As required, detailed embodiments of the present invention are disclosed herein. However, it should be understood that the disclosed embodiments are only an example of the invention, which may be embodied in various and alternative forms. The figures do not necessarily reveal the construction in detail, and some schemes may be enlarged or reduced to demonstrate an overview of their function. In this regard, the specific structural and functional details disclosed herein should not be interpreted as limiting, but only as representing the basis for a specialist in the field of technology to study the various applications of the present invention.
[0017] In this context, the expression "and / or" when used in a list of two or more elements means that any one of the listed elements can be applied on its own, or any combination of two or more of the listed elements can be applied. For example, if the composition is described as containing components A, B and / or C, the composition may contain one A; one B; one C; A and B in the aggregate; A and C in the aggregate; B and C together; or A, B and C in the aggregate.
[0018] FIG. 1-2B, a vehicle 10 is shown in the form of a pickup truck having a cab 14 and a loading platform 18. The loading platform 18 includes a substantially horizontal floor 22 and a pair of substantially vertical side walls 26. A pivoting rear hinge 34 is connected to the rear portion cargo platform 18. The rear hinge 34 is rotatable between the substantially closed (Fig. 2A) and the substantially open (Fig. 2B) positions. Opening the tailgate 34 to the open position allows access to the cargo area 30 formed by the cargo platform 18 of the vehicle 10. The bumper 42 forming the license plate area 46 is connected to the rear of the vehicle 10. The license plate 50 can be installed in the license plate area 46 sign and highlighted in order to comply with local, state, and federal transportation laws. In the illustrated embodiment, the trailer coupling device 54 is coupled to the trailer coupling device 58 and is located under the license plate area 46 of the bumper 42 and can be used to tow a trailer or other towed equipment.
[0019] Further, in the embodiments depicted in FIG. 2A and 2B, a recessed surface 62 on which the light source 66 is located is formed along the lower portion of the tailgate 34. The tailgate 34 extends above the bumper 42 and the license plate area 46. Although it is shown that it is facing in the forward direction relative to the vehicle, the light source 66 can also be turned directly to the bumper 42 and the license plate area 46. The floor 22 of the loading platform 18 forms a rear surface 70 along which the first optically interactive portion 74 is located. The first optically interactive portion 74 may be located across the entire width of the rear surface 70 of the floor 22 or may be spaced on the rear surface 70. For example, the first optically the interactive portion 74 can only be located near the license plate region 46 of the bumper 42. Additionally, the first optically interactive portion 74 can extend over the entire height of the rear surface 70 or could b is located just above the portion of the rear surface 70. The second optically interactive portion 78 is shown near the light source 66 and the recessed surface 62. In one embodiment, the first and / or second optically active sections 74, 78 are reflective elements that may include metallic , a polymeric material that is metallized or otherwise configured to substantially reflect light, or other known reflective materials. For example, the first and second optically interactive sections 74, 78 may include materials configured to reflect more than about 50%, more than about 60%, more than about 70%, more than about 80% and more than about 90% of the light in a scattering or specular manner . In one embodiment, the first and second optically interactive sections 74, 78 are simple light colored stripes configured to reflect light. In further embodiments, the first and second optically interactive sections 74, 78 may include one or more photoluminescent materials or structures with the possibility of generating light emission, as explained in more detail below. The first and second optically interactive sections 74, 78 may also include sets of photoluminescent materials / structures and reflective elements.
[0020] Next, in FIG. 2A, in operation, the light source 66 is configured to emit light 80. The emitted light 80 may be in the visible spectrum and / or invisible spectrum. The light source 66 is located on the tailgate 34 so that when the tailgate 34 is in a substantially closed position, as shown in FIG. 2A, the light source 66 interacts with the first and second optical interactive portions 74, 78 to direct the emitted light 80 downward and towards the rear of the vehicle so that the bumper 42, license plate 50, license plate area 46, trailer coupler 58 and / or the ground at the back and under the vehicle 10 is highlighted. In embodiments with ground backlight, the emitted light 80 can act as a backlight for the entrance of the rear of the vehicle 10 to provide illumination of hazards on the ground (for example, uneven terrain, water and / or pits) and / or general working lighting near the ground. It should be understood that the position of the light source 66 and the first and second optically interactive sections 74, 78 can be replaced (i.e., changed positions) in order to provide various lighting effects of the license plate 50, license plate area 46, coupling device 58 with trailer and / or land. For example, the light source 66 can be moved to the position of the second optically interactive portion 78 to provide more directional illumination of the license plate area 46. In another embodiment, the light source 66 can be moved to the rear surface 70 of the loading platform 18 of the floor 22 in order to provide more directional illumination of the trailer coupling device 58. Additionally, the light 80 can be used for general working lighting near the rear of the vehicle 10 or, in some cases, auxiliary reversing lights and / or brake lights. It should be noted that the light source 66 can effectively illuminate the license plate 50, the license plate area 46 and the trailer coupling device 58 using one (for example, any of the optically interactive sections 74, 78), not one or more of two optically interactive sections.
[0021] Next, in FIG. 2B, the tailgate 34 is shown in a substantially open position. The tailgate 34 rotates around a pair of pivot fingers on a pivot axis at or near a lower edge relative to the closed position. The tailgate cable 82 may assist in maintaining the tailgate 34 when the tailgate 34 is in a substantially open position. When the tailgate 34 is rotated from a substantially closed position to a substantially open position, the light source 66 is rotated from an approximately vertical orientation (FIG. 2A) to an approximately horizontal orientation (FIG. 2B). Like light source 66, the second optically interactive portion 78 rotates from approximately horizontal orientation (FIG. 2A) to approximately vertical orientation (FIG. 2B). Accordingly, by turning the tailgate 34 into a substantially horizontal open position, the light source 66 is arranged to radiate light 80 vertically into the cargo space 30 and above the inner region or upper surface of the tailgate 34. The location of the light source 66 between the first and second optically interactive sections 74, 78 provides a wide angle at which the emitted light 80 can be seen, thus providing working lighting for both the cargo area 30 and the space on d rear tailgate 34 to perform work (for example, fastening the cables, the location of the awning, loading objects for transportation by vehicle 10). When the tailgate 34 is rotated to a substantially horizontal open position, a gap 86 may be formed between the tailgate 34 and the floor 22 of the loading platform 18. The gap 86 may pose a hazard to the driver and / or passengers and objects located in the cargo space 30 of the cargo platform 18, as it creates a gap in the height of the cargo platform 18. Preferably, the emitted light 80 can serve as a warning to the driver and / or passenger placed in the cargo compartment space 30 and on the tailgate 34, the location of the gap 86.
[0022] In FIG. 3A-3C show a cross-sectional view of a light source 66 that can be used on a vehicle with external photoluminescent material according to one embodiment. As illustrated in FIG. 3A, the light source 66 may have a multilayer structure that includes a light generating unit 90, a photoluminescent structure 94, and a visible portion 100.
[0023] The light generating unit 90 may correspond to a thin film or printed light emitting diode (LED) assembly and may include a substrate 98 as its lowermost layer. The substrate 98 may include a material of polycarbonate, polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET) of the order of 0.0127-0.1524 cm thickness and placed above the intended surface of the vehicle on which the light source 66 is to be received (e.g. recessed surface 62 or rear tailgate 34). Alternatively, as a cost-saving measure, substrate 98 may directly correspond to an existing vehicle structure (e.g., recessed surface 62, external panels and / or internal panels).
[0024] The light generating unit 90 includes a positive electrode 102 located above the substrate 98. The positive electrode 102 includes a conductive epoxy resin, for example, but not limited to, an epoxy resin containing silver or copper. The positive electrode 102 is electrically connected to at least a portion of the plurality of LED sources 106 located in the semiconductor ink 110 and placed above the positive electrode 102. Similarly, the negative electrode 114 is also electrically connected to at least a portion of the LED sources 106. The negative electrode 114 is located above the semiconductor ink 110 and includes a transparent or light transmitting conductive material, for example, but not limited to, indium and tin oxide. Additionally, each of the positive and negative electrodes 102, 114 is electrically connected to the controller 118 and the power source 122 through the corresponding bus 126, 130 and conductive wires 134, 138. The bus 126, 130 can be printed along the opposite edges of the positive and negative electrodes 102, 114 and the connection points between the buses 126, 130 and the conductive wires 134, 138 can be located in opposite corners of each bus 126, 130, in order to facilitate the uniform distribution of current across the bus 126, 130.
[0025] The LED sources 106 can be distributed arbitrarily or in a controlled manner in the semiconductor ink 110 and can be configured to emit focused or unfocused light toward the photoluminescent structure 94. The LED sources 106 can correspond to micro-LEDs from gallium nitride elements with a size of the order of about 5 up to about 400 microns, and semiconductor ink 110 may include various binder materials and dielectric material, including but not limited to one or more of gallium, indium, silicon carbide, phosphorus and / or transparent polymeric binder materials. Thus, the semiconductor ink 110 may contain various concentrations of LED sources 106 so that the density of LED sources 106 or the number of LED sources 106 per unit area can be adjusted for various lighting applications. In some embodiments, the density of the LED sources 106 may vary along the length of the light source 66. For example, the central portion of the light generating unit 90 (e.g., near the license plate region 46) may have a higher density of LED sources 106 than the peripheral portions. In such an embodiment, the light source 66 may look brighter or have a higher brightness in order to preferably illuminate the license plate area 46, license plate 50, or trailer coupling device 58. In other embodiments, the density of the LED sources 106 may increase or decrease with increasing distance from a preselected point. In some embodiments, LED sources 106 and semiconductor inks 110 can be produced by Nth Degree Technologies Worldwide Inc. Semiconductor ink 110 can be applied using various printing processes, including inkjet and screen printing processes of ink to the selected portion (s) of the positive electrode 102. More specifically, it is assumed that the LED sources 106 are distributed in the semiconductor ink 110 and have such a shape and size, that a significant number of them align with the positive and negative electrodes 102, 114 during the deposition of semiconductor ink 110. The portion of the LED sources 106, which ultimately Electrically connected to the positive and negative electrodes 102, 114 may be illuminated by a combination of buses 126, 130, a controller 118, a power source 122 and conductive wires 134, 138. According to one embodiment, the power source 122 may correspond to a vehicle power source operating on 12-16 volts DC. Additional information regarding the construction of the light generating units is disclosed in US Patent Publication No. 2014/0264396 A1 from Lowenthal et al., Entitled "ULTRA-THIN PRINTED LED LAYER REMOVED FROM SUBSTRATE", filed March 12, 2014, the full disclosure of which is incorporated herein by reference.
[0026] Also in FIG. 3A, a photoluminescent structure 94 is placed above the negative electrode 114 as a coating, layer, film or other suitable application. With respect to the present illustrated embodiment, the photoluminescent structure 94 may be arranged as a multilayer structure including an energy conversion layer 42, a possible stability layer 146 and a possible protective layer 150.
[0027] The energy conversion layer 142 includes at least one photoluminescent material 154 having energy conversion elements with phosphorescent or fluorescent properties. For example, the photoluminescent material 154 may include organic or inorganic fluorescent dyes, including rilenes, xanthenes, porphyrins, phthalocyanines. Additionally or alternatively, the photoluminescent material 154 may include luminescent substances from the group of garnets doped with cerium, for example, YAG: Ce. An energy conversion layer 142 can be prepared by distributing the photoluminescent material 154 in a polymer matrix to form a homogeneous mixture using a variety of methods. Such methods may include preparing an energy conversion layer 142 from the composition in a liquid carrier medium and depositing an energy conversion layer 142 on a negative electrode 114 or other necessary substrate. Layer 142 of the energy conversion can be deposited on the negative electrode 114 by staining, screen printing, flexography, spraying, coating through the slit, coating by immersion, coating by roller and coating with the removal of excess using a strip. Alternatively, the Energy Conversion Layer 142 may be prepared by methods that do not use a liquid carrier medium. For example, the energy conversion layer 142 can be made by dispersing the photoluminescent material 154 into a solid solution (homogeneous mixture in a dry state), which can be incorporated into a polymer matrix formed by extrusion, injection molding, compression molding, calendering, hot molding, etc. d.
[0028] To protect the photoluminescent material 154 contained in the energy conversion layer 142 from photolytic and thermal degradation, the photoluminescent structure 94 may include a stability layer 146. Layer 146 stability can be made in the form of a separate layer, optically connected to and glued to the layer 142 of energy conversion or otherwise combined with it. The photoluminescent structure 94 may also include a protective layer 150 optically connected to and adhered to the resistance layer 146 or another layer (for example, an energy conversion layer 142 in the absence of the stability layer 146) to protect the photoluminescent structure 94 from physical and chemical damage arising from due to environmental influences. The resistance layer 146 and / or the protective layer 150 may be combined with the energy conversion layer 142 by successively coating or printing each layer, sequentially laminating or embossing, or any other suitable means. Additional information regarding the construction of photoluminescent structures is disclosed in US Pat. No. 8,232,533 to Kingsley et al., Entitled "PHOTOLYTICALLY AND ENVIRONMENTALLY STABLE MULTILAYER STRUCTURE FOR HIGH EFFICIENCY ELECTROMAGNETIC ENERGY CONVERSION AND SUSTAINEDISEC 7 July 2011, which is fully disclosed. included here by reference.
[0029] In operation, the photoluminescent material 154 is configured to be excited when receiving incoming light of a specific wavelength from at least a portion of the LED sources 106 of the light generating unit 90. As a result, incoming light undergoes an energy conversion process and is re-emitted at a different wavelength. According to one embodiment, the photoluminescent material 154 may be configured to convert incoming light to light with a longer wavelength, otherwise known as down-conversion. Alternatively, the photoluminescent material 154 may be configured to convert incoming light to light with a shorter wavelength, otherwise known as up-conversion. In any approach, the light converted by the photoluminescent material 154 can be immediately removed from the photoluminescent structure 94 or otherwise used in an energy cascade, the converted light serving as incoming light to excite another composition of the photoluminescent material located in the energy conversion layer 142, the subsequent converted the light can then be removed from the photoluminescent structure 94 or used as incoming light, etc. Regarding the energy conversion processes described herein, the difference in wavelength between the incoming light and the converted light is known as the Stokes shift and serves as the main mechanism for driving the energy conversion process corresponding to the change in the wavelength of light.
[0030] Next, in FIG. 3A, the visible portion 100 is positioned above the photoluminescent structure 94. In some embodiments, the visible portion 100 may include plastic, silicon, or urethane material and is molded above the photoluminescent structure 94 and the light generating unit 90. Additionally, the visible portion 100, the resistance layer 146 and / or the protective layer 150 may extend around the sides of the light generating unit 90 to prevent moisture and / or contaminants from entering the light generating unit 90. Preferably, the visible portion 100 should be at least partially light transmitting with respect to the converted light exiting the photoluminescent structure 94. Thus, the visible portion 100 will be illuminated by the photoluminescent structure 94 during the energy conversion process. Additionally, by reshaping the visible portion 100, it can also function to protect the photoluminescent structure 94 and the light generating unit 90. The visible portion 100 may be made in a flat shape and / or arcuate shape to increase the potential of its visibility in the luminescent state. Similar to the photoluminescent structure 94 and the light generating unit 90, the visible portion 100 may also have an advantage in a thin design, thereby facilitating the installation of the light source 66 in small spaces to accommodate the vehicle 10 (for example, between the recessed surface 62 and the rear flap 34 and the rear surface 70 loading platform 18).
[0031] In some embodiments, the decorative layer 158 may be located between the visible portion 100 and the photoluminescent structure 94. The decorative layer 158 may include polymeric material or other suitable material and is configured to control or change the appearance of the visible portion 100 of the light source 66. For example, the decorative layer 158 may be configured to give a metallic appearance to the visible portion 100 when the visible portion 100 is in an unlit state. In other embodiments, the decorative layer 158 can be painted in any color to match the design of the vehicle on which the light source 66 is to be received. In any case, the decorative layer 158 should be at least partially light transmitting so that the photoluminescent structure 94 is not prevented from highlighting the visible portion 100 during the energy conversion process.
[0032] In some embodiments, the photoluminescent structure 94 may be applied separately and at a distance from the light generating unit 90. For example, the photoluminescent structure 94 may be located on a component or surface of the vehicle in close proximity, but not in physical contact, with the light generating unit 90. For example, optically interactive sections 74, 78 may include a photoluminescent structure 94 in combination with the aforementioned embodiments, in which optically interactive sections 74, 78 include photoluminescent materials. It should be understood that in embodiments where the photoluminescent structure 94 is included in the optically interactive portions 74, 78, the light source 66 may, however, have the same or similar structure of the photoluminescent structure 94 as part of the light source 66.
[0033] In FIG. 3B, an energy conversion process 162 for creating a single luminescence color is illustrated according to one embodiment. For purposes of illustration, the energy conversion process 162 is described below using the light source 66 of FIG. 3A. In this embodiment, the energy conversion layer 142 of the photoluminescent structure 94 includes only photoluminescent material 154, which is configured to convert incoming light (e.g., indicated by solid arrows) received from LED sources 106 into visible light (e.g., indicated by dashed arrows) having a wavelength different from the wavelength associated with the incoming light. More specifically, the photoluminescent material 154 is configured to have an absorption spectrum that includes the radiation wavelength of the incoming light supplied from the LED sources 106. The photoluminescent material 154 is also configured to have a Stokes shift resulting in converted visible light having a radiation spectrum expressed in the desired color, which may vary depending on the application of the lighting. The converted visible light is output from the light source 66 by means of the visible portion 100, thereby causing illumination of the visible portion 100 in the desired color. In one embodiment, the energy conversion process 162 is carried out by down-converting, the incoming light including light at the lower edge of the visibility spectrum, for example, blue, violet or ultraviolet (UV) light. This allows the use of blue, violet or UV LEDs as LED sources 106, which can provide a relative cost advantage over simply using LEDs of the desired color and the aforementioned energy conversion process in general. Moreover, the backlight provided by the visible portion 100 provides a unique and favorable visual perception, which can be difficult to repeat using non-photoluminescent means.
[0034] FIG. 3C, a second energy conversion process 166 is illustrated to create multiple colors of light according to one embodiment. For comparability, the second energy conversion process 166 is also described below using the light source 66 of FIG. 3A. In this embodiment, the energy conversion layer 142 includes first and second photoluminescent materials 154, 174 that are mixed in the energy conversion layer 142. Alternatively, the photoluminescent materials 154, 174 may be isolated from each other, if desired. It should also be appreciated that the energy conversion layer 142 may include more than two different photoluminescent materials, in which case the designs provided below are applied in a similar manner. In one embodiment, the second energy conversion process 166 occurs by down-converting using blue, violet and / or UV light as an excitation source.
[0035] With respect to the present illustrated embodiment, the excitation of the photoluminescent materials 154 and 174 are mutually exclusive. That is, the photoluminescent materials 154 and 174 are configured to have non-overlapping absorption spectra and Stokes shifts that give different emission spectra. Also, when performing photoluminescent materials 154, 174, attention should be paid to the selection of the corresponding Stokes shifts so that the converted light emitted from one of the photoluminescent materials 154, 174 does not excite the other, except when necessary. According to one exemplary embodiment, the first portion of the LED sources 106, shown as LED sources 106a for example, is configured to emit incoming light having a radiation wavelength that excites only the photoluminescent material 154 and converts the incoming light into visible light of the first color ( e.g. white). Similarly, the second portion of the LED sources 106, shown as LED sources 106b for example, is configured to emit incoming light having a radiation wavelength that excites only the second photoluminescent material 174 and converts the incoming light into visible light of a second color (e.g. red). Preferably, the first and second colors are visually distinguishable from each other. Thus, the LED sources 106a and 106b can be selectively activated using the controller 118 to cause the photoluminescent structure 94 to luminesce in a variety of colors. For example, the controller 118 can only activate LED sources 106a to excite only the photoluminescent material 154, leading to the illumination of the visible portion 100 in the first color. Alternatively, the controller 118 can only activate LED sources 106b to excite only the second photoluminescent material 174, resulting in the illumination of the visible portion 100 in a second color. Alternatively, the controller 118 can activate the LED sources 106a and 106b together, which causes both photoluminescent materials 154, 174 to be excited, resulting in the illumination of the visible portion 100 in the third color, which is a mixture of colors of the first and second colors (for example, pink). For energy conversion layers containing more than two different photoluminescent materials, a greater variety of colors can be achieved. The colors provided include red, green, blue, and combinations thereof, including white, all of which can be obtained by selecting the appropriate photoluminescent materials and properly controlling their respective LED sources.
[0036] In FIG. 4 shows a diagram of a vehicle 10 in which the tailgate 34 is illuminated. The tailgate 34 includes a controller 118 in communication with the light source 66. The controller 118 may include a memory 18 having instructions therein that are executed by the processor 184 of the controller 118. The controller 118 may provide power to the light source 66 or the corresponding bus (for example, buses 126, 130) via a power source 122 located on on board the vehicle 10. In addition, the controller 118 may be configured to control the light output of the light source 66 based on feedback received from one or more vehicle control modules 188 wa, for example, but not limited to, a body control module, an engine control module, a steering control module, a brake control module, etc., or a combination thereof. By controlling the light output of the light source 66, the illuminated tailgate 34 may be illuminated in a variety of colors and / or patterns to provide an aesthetic appearance, work light, or may provide vehicle information to the intended observer. For example, when braking a vehicle 10, the light source 66 may emit light 80, which is red to provide additional illumination. In another example, the light source 66 may emit yellow light 80 when the tailgate 34 is in a substantially open position to warn the driver and / or passenger in the cargo space 30 of the clearance 86. In still other examples, the light source 66 may emit light having a white color to provide working illumination of the cargo space 30 and near the device for coupling with the trailer 58. In other embodiments, the light source 66 may emit light having a white color for illuminating the license plate 50 when moving lion. In embodiments with ground illumination, the emitted light 80 may take many colors depending on the use of the light 80. For example, in the circumstances of working lighting, the emitted light may be white, while in circumstances in which the driver wishes to change the illumination of the earth, the light 80 may be colored (e.g. green, red, blue, or a combination thereof.
[0037] In embodiments in which the first or second optically interactive portions 74, 78 are included in the photoluminescent structure 94, the controller 118 may cause the light source 66 to emit the light wavelength through the LED sources 106 to cause the photoluminescent material 154 of the light source 66 to be illuminated by a first wavelength that excites a photoluminescent structure 94 of the first or second optically interactive sections 74, 78 for radiation at the second wavelength. The first and second wavelengths can both be visible, resulting in a mixture of colors, or only one of the wavelengths can be visible, leading to the creation of one color. In further embodiments, controller 118 may vary the wavelength of light from the LED sources 106 by pulse width modulation or current control. In some embodiments, the controller 118 may be configured to adjust the color of the emitted light of the light source 66 by sending control signals to adjust the intensity or energy output level of the LED sources 106. For example, if the LED sources 106 are controlled to output the first radiation at a low level, essentially all of the first radiation can be converted to second radiation by a photoluminescent structure 94. With this control circuit, the emitted light 80 may have a color corresponding to uyuschy second radiation. If the LED sources 106 are controlled to output the first radiation at a high level, only a portion of the first radiation can be converted to the second radiation. In this configuration, the color of the light corresponding to the mixture of the first radiation and the second radiation can be output in the form of the emitted light 80. With this control scheme, in the embodiments in which the first and second optically interactive sections 74, 78 contain photoluminescent materials, the first and / or second optically interactive sections 74, 78 may be excited by the first and / or second wavelengths.
[0038] It is also important to note that the design and arrangement of the disclosure elements, as shown in exemplary embodiments, are only illustrative. Although only a few variations of the present invention are described in detail in this disclosure, a person skilled in the art who is studying this disclosure should take into account that many transformations are also possible (for example, changes in sizes, volumes, designs, shapes and properties of various elements, parameter values, layouts, use of materials, colors, orientations, etc.) without significant deviation from new ideas and advantages of the essence of the invention. For example, the elements shown in one piece can be made up of many parts, or the elements shown in many parts can be made up in one piece, the operation of the interfaces can be reversed or otherwise changed, the length or width of the structures and / or elements or connectors or other elements of the system may be changed, the nature or number of adjustment positions provided between the elements may be changed. It should be noted that the elements and / or components of the system can be made of any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Accordingly, all such transformations are intended to be included within the protection scope of the present invention. Other replacements, transformations, changes and exceptions may be made in the design, operating conditions and layouts of the required and other exemplary embodiments without deviating from the intent of the present invention.
[0039] However, it is understood that any described processes or steps in the described processes may be combined with other disclosed processes or steps to form structures within the scope of protection of the present disclosure. The exemplary designs and processes disclosed herein are for purposes of illustration and should not be construed as limiting.
[0040] It should be understood that changes and transformations can be made in the above structure without deviating from the concepts of the present invention, and it should further be understood that it is intended to include such intentions in the following claims, unless the claims wording note otherwise.

Claims (35)

1. A vehicle containing:
cargo platform forming cargo space;
a bumper located behind the cargo platform of the vehicle;
a tailgate forming a recessed surface, wherein the tailgate is pivotable between substantially open and substantially closed positions; and
a backlight system comprising:
a first optically interactive portion located on a freight platform;
a second optically interactive portion located on the tailgate; and
a light source located on a recessed surface of the tailgate, and the light source and the first and second optically interactive surfaces are configured to illuminate the cargo space when the tailgate is in a substantially open position and the bumper lights in a substantially closed position.
2. The vehicle according to claim 1, additionally containing a device for coupling with a trailer mounted under the bumper, the light source and the first and second optically interactive sections made with the possibility of joint illumination of the device for coupling with the trailer.
3. The vehicle according to claim 1, in which the first and second optically interactive sections include at least one of the photoluminescent section and the reflective element.
4. The vehicle according to claim 3, in which the second optically interactive portion is a reflective element arranged to reflect light into the cargo space when the rear hinged side is in a substantially open position.
5. The vehicle according to claim 3, in which the first optically interactive section contains a photoluminescent material configured to emit light between the rear tailgate and the bumper.
6. The vehicle according to claim 1, in which the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
7. The vehicle according to claim 6, in which the light source has an increased density of light emitting diodes near the area of the bumper license plate.
8. A vehicle containing:
cargo platform forming cargo space;
a bumper located behind the cargo platform of the vehicle;
a tailgate functioning between a substantially open position and a substantially closed position; and
a backlight system comprising a light source located on the tailgate so that the light source illuminates the bumper when the tailgate is in the closed position and illuminates the cargo area when the tailgate is in the open position.
9. The vehicle of claim 8, wherein the light source is located on the tailgate at about the same height or below the horizontal axis of rotation of the tailgate.
10. The vehicle of claim 8, further comprising a first optically interactive portion located on the loading platform and configured to illuminate between the rear hinged side and the bumper and the bumper license plate region, and a second optically interactive portion located on the rear hinged side and made with the ability to illuminate the cargo area.
11. The vehicle of claim 10, in which the second optically interactive portion is a reflective element configured to reflect light.
12. The vehicle of claim 8, wherein the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
13. The vehicle of claim 12, wherein the light source has an increased density of light emitting diodes in the vicinity of the license plate region.
14. A vehicle containing:
a cargo platform forming a cargo space and having an optically interactive section located on it;
a bumper located at the rear of the vehicle’s cargo platform, the bumper forming a license plate region;
a trailer coupling mounted under the bumper; and
a light source located on the tailgate, which operates between a substantially open position and a substantially closed position,
moreover, the optically interactive section and the light source are configured to jointly illuminate the cargo space when the tailgate is in the open position, and illuminate the area of the bumper license plate and the trailer coupling in the closed position.
15. The vehicle of claim 14, wherein the optically interactive portion includes at least one of a photoluminescent portion and a reflective element.
16. The vehicle of claim 14, wherein the light source is a printed unit of light emitting diodes having a variable density of light emitting diodes along the length of the printed unit of light emitting diodes.
17. The vehicle according to clause 16, in which the light source has a high density of light emitting diodes near the area of the bumper license plate.
18. The vehicle according to 17, in which the second reflecting element is located on the rear hinged side and is configured to reflect light to the cargo platform when the rear hinged side is in a substantially closed position.
19. The vehicle of claim 18, wherein the second optically interactive portion, which is reflective, is located on the rear tailgate near the light source.
RU2016113056A 2013-11-21 2016-04-06 Vehicle RU2705544C2 (en)

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US14/687,972 US9809160B2 (en) 2013-11-21 2015-04-16 Tailgate illumination system
US14/687,972 2015-04-16

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RU2016113056A3 (en) 2019-09-05
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CN106043112A (en) 2016-10-26
DE102016106774A1 (en) 2016-10-20

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