RU2685088C2 - Liquid medium level gauge with photoluminescent backlight - Google Patents

Liquid medium level gauge with photoluminescent backlight Download PDF

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Publication number
RU2685088C2
RU2685088C2 RU2015144223A RU2015144223A RU2685088C2 RU 2685088 C2 RU2685088 C2 RU 2685088C2 RU 2015144223 A RU2015144223 A RU 2015144223A RU 2015144223 A RU2015144223 A RU 2015144223A RU 2685088 C2 RU2685088 C2 RU 2685088C2
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Russia
Prior art keywords
container
fluid
photoluminescent
photoluminescent element
radiation
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RU2015144223A
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Russian (ru)
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RU2015144223A3 (en
RU2015144223A (en
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Стюарт С. САЛТЕР
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ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи
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Priority to US14/514,524 priority Critical patent/US9376058B2/en
Priority to US14/514,524 priority
Application filed by ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи filed Critical ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи
Publication of RU2015144223A publication Critical patent/RU2015144223A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284Electromagnetic waves
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/46Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48Liquid supply therefor
    • B60S1/50Arrangement of reservoir
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284Electromagnetic waves
    • G01F23/292Light, e.g. infra-red or ultra-violet

Abstract

FIELD: measuring equipment.
SUBSTANCE: invention relates to the field of measurement equipment and relates to a backlit liquid medium level gauge for a vehicle. Said gauge includes a container, a liquid medium located in the container, a photoluminescent element located on the container, and a light source configured to emit radiation to excite the photoluminescent element and thereby illuminate the container. Further, the liquid medium level is determined based on the degree of illumination of the container when the photoluminescent element is exposed to radiation.
EFFECT: providing a clearer visual display of the level of a liquid medium in the container.
20 cl, 9 dwg

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a partial continuation of the application for the grant of a US patent under No. 14 / 322,450, filed on July 2, 2014, and entitled "PHOTOLUMINESCENT ENGINE COMPARTMENT LIGHTING", which is a partial continuation of the application for the grant of a US patent No. 14 / 301,635, filed on June 11, 2014 and entitled "PHOTOLUMINESCENT VEHICLE READING LAMP", which is a partial continuation of the application for the grant of US patent No. 14 / 156,869, filed January 16, 2014, and entitled "VEHICLE DOME LIGHTING SYSTEM WITH PHOTOLUMESESENT STRUCTURE", which is a partial continuation of the application for the issuance of the patent with the PHOTOLUMESESENT STRUCTURE, which is a partial continuation of the application for the issuance of a patent under number 14 / 086,442, according to Anna November 21, 2013 and entitled «VEHICLE LIGHTING SYSTEM WITH PHOTOLUMINESCENT STRUCTURE». The contents of the above related applications are thus fully incorporated into this application by reference.

TECHNICAL FIELD TO WHICH INVENTION RELATES.

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

BACKGROUND

Illumination originating from photoluminescent materials offers a unique and attractive viewing experience. Therefore, it is required to include such photoluminescent materials in terms of vehicles for various lighting applications.

DISCLOSURE OF INVENTION

According to one aspect of the present invention, a backlit fluid level indication system for a vehicle includes a container, a fluid located in the container, a photoluminescent element located on the container, and a light source adapted to emit radiation to excite the photoluminescent element and thus highlighting the container. The fluid level is determined based on the degree of illumination of the container when the photoluminescent element is exposed to radiation.

According to another aspect of the present invention, a lighting system for a vehicle container includes a fluid container, a photoluminescent element located on the container, and a light source located closer to the container. The light source is configured to emit light of the first wavelength, directed to the photoluminescent element. The photoluminescent element is configured to convert the first wavelength to at least a second wavelength greater than the first wavelength in order to highlight the container.

According to yet another aspect of the present invention, a lighting system for a vehicle container includes a container for accommodating a fluid that determines the fluid level and free space above the fluid, a photoluminescent element located on the container, and a light source located inside the container, configured to emit radiation to excite the photoluminescent element. The photoluminescent element illuminates the container above the fluid level.

These and other aspects, objectives and features of the present invention will be understood and appreciated by experts in the field of technology to study the following description of the invention, the claims and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

IN DRAWINGS:

FIG. 1 is a perspective view of a vehicle having a photoluminescent illumination system for indicating the level of a fluid;

FIG. 2A is a side view of a photoluminescent structure presented as a coating for a backlight system;

FIG. 2B is a top view of a photoluminescent structure, represented as a discrete particle, for a backlight system;

FIG. 2C is a side view of a plurality of photoluminescent structures represented as discrete particles and included in a separate structure for the illumination system;

FIG. 3 is a circuit diagram of a vehicle illumination system for converting a first light emission into a second light emission according to one of the embodiments;

FIG. 4 is a circuit diagram of a vehicle illumination system for converting a first light emission into a plurality of light emissions according to another embodiment;

FIG. 5 is a perspective view of a vehicle's engine compartment, further illustrating a backlit fluid level indicator;

FIG. 6 is an enlarged perspective view of an engine coolant container having an illumination system; and

FIG. 7 is a cross-sectional view along line X of the engine coolant container of FIG. 6

IMPLEMENTATION OF THE INVENTION

As required, detailed embodiments of the present invention are discussed in the materials of this application. However, it should be understood that the disclosed embodiments are merely examples of the invention, which may be embodied in various and alternative forms. Figures are not necessarily intended for detailed design, and some diagrams may be exaggerated or understated to show the general purpose. Therefore, the specific structural and functional details disclosed in the materials of the present application should not be interpreted as limiting, but only as a basis for studying by a person skilled in the art for various uses of the present invention.

As used herein, the term “and / or” when used in the list of two or more elements means that any one of the listed elements can be used by itself, or any combination of two or more of the listed elements can be used. For example, if a composition is described as containing components A, B, and / or C, the composition may contain exclusively A; exclusively B; exclusively C; A and B in combination; A and C in combination; B and C in combination; or A, B and C in combination.

The subsequent disclosure describes a vehicle lighting system configured to highlight at least a portion of the engine compartment. In some implementations, the light source may be configured to illuminate a photoluminescent element corresponding to at least one fixed part, component, reservoir for fluid in the engine compartment and / or any other part of the vehicle located closer to the engine compartment. In various implementations, the first photoluminescent element may correspond to a functional lighting device configured to illuminate a fluid reservoir. The second photoluminescent element may correspond to an additional lighting device, configured to highlight the fluid level indicator.

Referring to FIG. 1 is a perspective view of the vehicle 10 showing the backlight system 14 according to one embodiment. The illumination system 14 is designed to increase the visibility or aesthetic appeal of at least one fixed part located inside the engine compartment 18 of the vehicle 10. The illumination system 14 includes a light source 22 located on the inner surface 26 of the bonnet 30, which covers the engine compartment 18, and at least one photoluminescent element 34 (not shown) located inside the engine compartment 18. The hood 30 can be a panel that pivots between the downward direction is closed a position that hides the engine compartment 18, and an upward open position that opens the engine compartment 18. The light source 22 is adapted to output the first radiation 38 corresponding to the first light wavelength. In response to receiving light of the first wavelength, the photoluminescent element 34 can be illuminated and emit at least a second radiation 42 (not shown) having a second wavelength of light greater than the first wavelength.

The photoluminescent element 34 may include a plurality of photoluminescent elements. The photoluminescent element 34 may correspond to any number of fixed parts located in the engine compartment 18 and / or located on the inner surface 26 of the hood 30. In an exemplary implementation, the photoluminescent element 34 may correspond to at least one fixed part in the motor compartment 18. Photoluminescent element 34 may be configured to highlight at least one fixed part to produce a diffuse glow emitted from at least one fixed part.

The photoluminescent element 34 may include one or more photoluminescent structures configured to emit a specific color in response to the excitation generated in response to the first radiation 38. In some implementations, a combination of photoluminescent structures can be used in the photoluminescent element 34 to output different wavelengths, corresponding to different colors of light. For example, in some implementations, the photoluminescent element 34 may be configured to emit a combination of red light, green light and blue light to form light having a substantially white appearance. The backlight system 14 may provide various benefits, including a cost-effective way to incorporate diffuse lighting into at least one fixed part closest to the engine compartment 18.

Referring to FIG. 2A-2C generally shows a photoluminescent structure 50 represented as a coating (for example, a film) capable of being deposited on a fixed part of a vehicle, a detached particle that can be embedded in a separate structure that can be applied to a fixed part of a vehicle, respectively. The photoluminescent structure 50 may correspond to the photoluminescent element 34, as described in the materials of this application. At the most basic level, the photoluminescent structure 50 includes an energy conversion layer 54, which can be provided as a single layer or a multilayer structure, as shown by the broken lines in FIG. 2A and 2B.

Energy conversion layer 54 may include one or more photoluminescent materials having energy conversion elements selected from a phosphorescent or fluorescent material. Photoluminescent materials can be compiled to convert the input electromagnetic radiation into output electromagnetic radiation, usually having a longer wavelength and expressing a color that is not characteristic of the input electromagnetic radiation. The difference in wavelength between input and output electromagnetic radiation is indicated by reference as the Stokes shift and serves as the principal driving mechanism for the energy conversion process, corresponding to a change in the wavelength of light, often referred to as a down-conversion. In various implementations described in the materials of this application, each of the wavelengths of light (for example, the first wavelength, etc.) corresponds to the electromagnetic radiation used in the conversion process.

The photoluminescent element may comprise at least one photoluminescent structure 50 comprising an energy conversion layer (for example, a conversion layer 54). The energy conversion layer 54 can be prepared by spreading the photoluminescent material into the polymer matrix 58 to form a homogeneous mixture using a variety of methods. Such methods may include preparing an energy conversion layer 54 from a composition in a liquid carrier medium and applying an energy conversion layer 54 to a desired flat and / or non-planar substrate of a fixed vehicle part. The coating of the energy conversion layer 54 can be applied to the fixed part of the vehicle by dyeing, screen printing, pad printing, spraying, slit coating, dip coating, rolling application and strip coating. Additionally, the energy conversion layer 54 may be prepared by methods that do not use a carrier liquid.

For example, a solid-state solution (a homogeneous mixture in a dry state) of one or more photoluminescent materials may be incorporated into a polymer matrix 58 to provide an energy conversion layer 54. The polymer matrix 58 can be formed by extrusion, injection molding, pressure molding, extrusion, thermoforming, etc. In cases where one or more energy conversion layers 54 are made as particles, single layer or multilayer energy conversion layers 54 can be embedded in a fixed part or panel of a vehicle. When the energy conversion layer 54 includes a multi-layer composition, each layer may be coated sequentially. Additionally, the layers can be prepared separately, and later layered or embossed with each other to form a solid layer. Layers can also be jointly extruded to prepare a single multi-layer energy conversion structure.

Returning to FIG. 2A and 2B, the photoluminescent structure 50 may optionally include at least one stability layer 62 to protect the photoluminescent material contained within the energy conversion layer 54 from photolytic and thermal degradation. Stability layer 62 may be configured as a layer optically bonded and adhered to energy conversion layer 54. Stability layer 62 can also be combined with energy conversion layer 54. The photoluminescent structure 50 may also optionally include a protective layer 66 optically bonded and spliced with a layer 62 of stability or some kind of layer or coating to protect the photoluminescent structure 50 from physical and chemical damage caused by environmental factors.

Stability layer 62 and / or protective layer 66 can be combined with energy conversion layer 54 to form a single photoluminescent structure 50 by sequential coating or printing each layer, or by successive layering or embossing. Alternatively, several layers may be combined by successive coating, layering or embossing to form a substructure. The substructure may then be layered or embossed to form a single photoluminescent structure 50. Once formed, the photoluminescent structure 50 may be applied to the selected anchored vehicle part.

In some implementations, the photoluminescent structure 50 may be included in the fixed part of the vehicle as one or more discrete multilayer particles, as shown in FIG. 2c. The photoluminescent structure 50 may also be provided as one or more discrete multilayer particles dispersed in a polymer composition, which is subsequently applied to a fixed part or panel of the vehicle as an adjacent structure. Additional information on the structure of the photoluminescence LONG-TERM SECONDARY RADIATION "(" PHOTOLYTICALLY AND ENVIRONMENTALLY STABLE MULTILAYER STRUCTURE FOR HIGH EFFICIENCY ELECTROMAGNETIC ENERGY CONVERSION AND SUSTAINED SECONDARY EMISSION "), yes supply th July 31, 2012, the entire disclosure of which is incorporated herein by reference.

Referring to FIG. 3, the illumination system 14 is generally shown in one embodiment in a front-illuminated configuration for converting the first radiation 38 from the light source 22 to the second radiation 42. The first radiation 38 contains the first length λ 1 wave, and the second radiation 42 contains the second length λ 2 waves. The backlight system 14 may include a photoluminescent structure 50 provided as a coating and deposited on a substrate 74 of a fixed vehicle part 78. The photoluminescent structure 50 may include an energy conversion layer 54 and, in some implementations, may include a stability layer 62 and / or a protective layer 66. In response to the activation of the light source 22, the first radiation 38 is converted from the first length λ 1 waves to the second radiation 42, having at least a second wavelength λ 2 . The second radiation 42 may contain a plurality of λ 2 , λ 3 , λ 4 wavelengths, configured to emit substantially white light from a fixed vehicle part 78.

In various implementations, the backlight system 14 comprises at least one energy conversion layer 54 configured to convert the first radiation 38 at the first wavelength λ 1 to the second radiation 42 having at least a second wavelength λ 2 . In order to form a plurality of λ 2 , λ 3 , λ 4 wavelengths, the energy conversion layer 54 may comprise a red light emitting photoluminescent material, a green light emitting photoluminescent material and a blue light emitting photoluminescent material, concentrated in the polymer matrix 58. Emitting red, green and blue light photoluminescent materials can be combined to form substantially white light for the second radiation 42. In addition, emitting red, green and blue radiation of f luminescent materials can be used in a variety of proportions and combinations to control the color of the second radiation 42.

Each of the photoluminescent materials can differ in output intensity, output wavelength and peak absorption wavelengths based on the specific photochemical structure and combinations of photochemical structures used in the energy conversion layer 54. As an example, the second radiation 42 can be changed by adjusting the wavelength λ 1 of the first radiation to introduce photoluminescent materials at different intensities to change the color of the second radiation 42. In addition or as an alternative to emitting red, green and blue light photoluminescent materials Other photoluminescent materials can be used alone and in various combinations to form the second radiation 42 in a wide variety of colors. Thus, the backlight system 14 can be configured for a variety of applications to give the desired color and lighting effect for the vehicle 10.

The light source 22 may also be referred to as an excitation source and be configured to emit at least the first radiation 38. The light source 22 may contain any form of light source, for example, halogen lighting, fluorescent lighting, light-emitting diodes (LEDs), organic LED (OLED), polymer LED (PLED) and solid-state lighting or any other form of lighting, configured to output the first radiation 38. The first radiation 38 from the first light source 22 can be configured, and for the condition that the first λ 1 wavelength corresponds to at least one absorption wavelength of one or more photoluminescent materials of the energy conversion layer 54. In response to receiving light with the first wavelength λ 1 , the energy conversion layer 54 can be excited and output one or more output wavelengths λ 2 , λ 3 , λ 4 . The first radiation 38 provides an excitation source for the energy conversion layer 54, aiming at the absorption wavelengths of the various photoluminescent materials used in it. Essentially, the backlight system 14 is configured to output the second radiation 42 to form the required intensity and color of the light.

Although multiple wavelengths are referred to as λ 2 , λ 3 , λ 4 wavelengths, photoluminescent materials can be combined in various proportions, types, layers, etc., to form a variety of colors for the second radiation 42. Photoluminescent materials can also be used in a plurality of photoluminescent elements distributed along the path of the first radiation 38 in order to generate any amount of radiation, for example, the third radiation, the fourth radiation, etc.

In an exemplary implementation, the light source 22 comprises an LED configured to emit a first wavelength λ 1 that corresponds to the blue spectral color range. The color range of the blue spectrum contains a range of wavelengths, generally expressed as blue light (~ 440-500 nm). In some implementations, the first λ 1 wavelength can also contain wavelengths in the near ultraviolet color range (~ 390-450 nm). In an exemplary implementation, λ 1 may be approximately equal to 470 nm. In some implementations, the first wavelength λ 1 may be approximately less than 500 nm, from the condition that the first wavelength of light is not visible to a significant extent.

The color range of the blue spectrum and shorter wavelengths can be used as an excitation source for the illumination system 14 due to these wavelengths having limited perceptual sharpness in the visible spectrum of the human eye. By using shorter wavelengths λ 1 and converting the first wavelength by converting layer 54 to at least one longer wavelength, the backlight system 14 creates a visual effect of light arising from the photoluminescent structure 50. In this configuration, light is emitted from the photoluminescent structure 50 of vehicle locations 10 that may be unavailable or expensive to add traditional light sources that require electrical connections.

As described in the materials of the present application, each of a plurality of λ 2 , λ 3 , λ 4 wavelengths can correspond to a substantially different spectral color range. The second wavelength λ 2 may correspond to the excitation of a red light emitting photoluminescent material having a wavelength of approximately 620-750 nm. The third wavelength λ 3 may correspond to the excitation of a green-emitting photoluminescent material having a wavelength of approximately 526-606 nm. The fourth λ 4 wavelength can correspond to a photoluminescent material emitting blue or blue-green light, having a wavelength longer than the first λ 1 wavelength, and approximately 430-525 nm. Although the lengths of λ 2 , λ 3 , λ 4 waves are described in the materials of this application as used to form substantially white light, various combinations of photoluminescent materials can be used in the conversion layer 54 to convert the first wavelength λ 1 to one or more wavelengths matching the variety of colors.

In some embodiments, the color of the diffuse glow perceived by the observer may be changed by adjusting the intensity or the level of energy release of the light source 22. For example, if the light source 22 is configured to output the first radiation 38 at a low level, essentially all of the first radiation 38 may be converted to a second radiation 42. In this configuration, the color of the light corresponding to the second radiation 42 may correspond to the color of the diffuse glow. If the light source 22 is configured to output the first radiation 38 at a high level, only a portion of the first radiation 38 can be converted to the second radiation 42. In this configuration, the color of the light corresponding to the mixture of the first radiation 38 and the second radiation 42 can be output as a diffuse glow .

Although a low level and a high level of intensity are described, referring to the first radiation 38, it will be understood that the intensity of the first radiation 38 may vary among a variety of intensity levels to adjust the color shade corresponding to the diffuse glow. As described herein, the color of the second radiation 42 may be largely dependent on the specific photoluminescent materials used in the photoluminescent element 34. Additionally, the conversion ability of the photoluminescent element may largely depend on the concentration of the photoluminescent materials used in the photoluminescent element 34. By adjusting the range of intensities that can be output from the source 22 of the light, concentration and proportions by photolumines non-centric materials in the photoluminescent element 34, and the types of photoluminescent materials used in the photoluminescent element 34, the illumination systems described in the materials of the present application can be operable to form ranges of color shades of the diffuse glow by mixing the first radiation 38 with the second radiation 42.

Referring to FIG. 4, the backlight system 14 is shown in a front-lit configuration according to another embodiment. In this exemplary embodiment, the light source 22 may be configured to emit the first radiation 38 in the direction of the plurality of photoluminescent elements 82. In this example, the plurality of photoluminescent elements 82 contains the first photoluminescent element 86, the second photoluminescent element 90 and the third photoluminescent element 94. Each of photoluminescent elements 86, 90, 94 can be made with the ability to convert the first length λ 1 of the wave of the first radiation 38 into one or more of the set of lengths λ 2 , λ 3 , λ 4 waves. Thus, the first radiation 38 can be converted into a plurality of radiation originating from each of the photoluminescent elements 82, to form a multicolor lighting effect.

For example, the first photoluminescent element 86 may contain photoluminescent materials in the conversion layer, configured to produce a second radiation 42. The second photoluminescent element 90 may contain photoluminescent materials in the conversion layer, configured to generate a third radiation 98. The third photoluminescent element 94 may contain photoluminescent materials in the conversion layer, made with the ability to generate a fourth radiation 102. Like the layer 54 is converted This is described in reference to FIG. 3, photoluminescent materials made with the ability to emit light of different colors can be used in a variety of proportions and combinations to control the output color of each of the second radiation 42, the third radiation 98 and the fourth radiation 102. Based on the required lighting effect, each of the radiation 42, 98 , 102 may contain photoluminescent material made with the ability to emit light, having essentially similar colors or a wide variety of color combinations.

To achieve different colors and combinations of photoluminescent materials described in the materials of this application, the backlight system 14 can use any form of photoluminescent materials, for example, photoluminescent materials, organic and inorganic dyes, etc. For more information regarding the fabrication and use of photoluminescent materials to achieve different emissions, refer to U.S. Patent No. 8,207,511 for CHENT and others, entitled “PHOTOLUMINESCENT FIBERS, COMPOSITES AND FABRICS MADE OF THEM” (“PHOTOLUMINESCENT FIBERS, COMPOSITHITEFENT”) MADE OF THEM ” ), with the filing date of June 26, 2012; U.S. Patent No. 8,247,761 to Agravala and others, entitled “PHOTOLUMINESCENT MARKING WITH FUNCTIONAL LINING” (“PHOTOLUMINESCENT MARKINGS WITH FUNCTIONAL OVERLAYERS”), with a filing date of August 21, 2012; US Patent № 8,519,359 on Kingsley and the other entitled "Stable to photolysis and in various media structure for highly efficient conversion of electromagnetic energy and sustainable secondary emission» ( «PHOTOLYTICALLY AND ENVIRONMENTALLY STABLE MULTILAYER STRUCTURE FOR HIGH EFFICIENCY ELECTROMAGNETIC ENERGY CONVERSION AND SUSTAINED SECONDARY EMISSION»), with the filing date August 27, 2013; U.S. Patent No. 8,664,624 to Kingsley et al. entitled "ILLUMINATING SUPPLY SYSTEM FOR SUSTAINABLE SECONDARY EMISSION" ("ILLUMINATION DELIVERY SYSTEM FOR GENERATING SUSTAINED SECONDARY EMISSION"), with a filing date of 4 March 2014; US Patent Publication No. 2012/0183677 on Agrawala and Others, entitled “PHOTOLUMINESCENT STRUCTURES, METHODS OF MANUFACTURE AND NEWEST APPLICATIONS” (“PHOTOLUMINESCENT COMPOSITIONS, METHODS OF MANUFACTURE AND NOVEL USES”), with a filing date of July 19, 2013 US Patent Publication No. 2014/0065442 to Kingsley and Others, entitled “PHOTOLUMINESCENT OBJECTS” (“PHOTOLUMINESCENT OBJECTS”), filed on March 6, 2014; and US Patent Publication No. 2014/0103258 on Agrawala and Others, entitled “COLORED LUMINESTER COMPOSITIONS AND TEXTILE PRODUCTS” (“CHROMIC LUMINESCENT COMPOSITIONS AND TEXTILES”), filed on April 17, 2014, all of which are incorporated into this application by links in its entirety.

As illustrated in FIG. 5, the light source 22 is adapted to direct the first radiation 38 down towards the engine compartment 18 when the hood 30 is oriented in the open position. For example, the light source 22 can be attached to the inner surface 26 of the hood 30, from the condition that the first radiation 38 is directed essentially downward, focused centrally in the engine compartment 18. Although the first radiation 38 can be directed through the essentially open volumetric space between the hood 30 and the engine compartment compartment 18, the backlight light on the first length λ 1 wave can be limited by perception. The limited visible or perceived illumination of the first wavelength λ 1 may be due to the presence of the first wavelength λ 1 in the blue or near ultraviolet (UV, UV) spectral color ranges. Due to the limited sensitivity of the human eye to light with such short wavelengths (for example, blue-colored light), the first radiation may go unnoticed by the observer of the backlight system 14. Thus, the photoluminescent element 34 can be illuminated on the basis of the condition that the activation source of the photoluminescent element 34 is not visible in order to provide an impression of exquisite diffused illumination.

Again with reference to FIG. 5, the engine compartment 18 includes a variety of fixed vehicle parts, configured to store and transport fluids used in operating the vehicle 10. Some of the fixed parts include fluid containers, such as engine coolant container 110 , a container 114 (eg, a tank) for the windshield washer fluid and a container 118 (eg, a tank) for the power steering fluid. Each of the containers 110, 114, 118 is configured to store the fluid and act as a reservoir for the fluid. Maintaining proper fluid levels in each of the containers 110, 114, 118 is important to ensure that vehicle 10 continues to function correctly and to prevent damage to vehicle 10.

Next, with reference to FIG. 6, engine coolant container 110 is depicted in more detail. Engine coolant container 110 is depicted as comprising a lid 122, a supply port 126 and a drain window 130. The engine coolant container 110 acts as a reservoir for storing engine coolant that is not used by the vehicle 10. Supply air supply 126 provides the engine coolant is able to flow into the overflow container 110, and the drain port 130 allows the coolant to return to the cooling system of the vehicle 10 when yes necessary. In the illustrated embodiment, a fluid level indicator 134 is located on the outer surface 132 of the overflow container 110, having a maximum fluid level mark 138 and a minimum fluid level mark 142. Maximum and minimum fluid levels marks 138, 142 may have filling lines and / or text to help determine the filling range in which the fluid level in the engine coolant container 110 should be maintained. It should be clear that the indicator 134 level of fluid can take a variety of configurations, and that the description is exemplary and is not implied limiting. The engine coolant container 110 is desirably comprised of a durable polymer (eg, plastic) capable of being resistant to the heat and chemical composition of the engine coolant 150. Preferably, the engine coolant container 110 is translucent or substantially transparent, such that a level of fluid within the container 110 can be observed by a human.

Traditionally, the fluid level indicators and filling lines are molded into the outer surface of the fluid containers (eg, engine fluid container 110, windshield washer fluid container 114, and power steering fluid container 118). Conventional fluid display systems rely on the transparent and / or translucent nature of the fluid container so that the observer can observe the fluid height inside the container 110 and compare it with the fluid level indicator, thus allowing the observer to determine if the fluid level is environment within the proper working range of filling. However, the determination of the level of fluid in traditional systems is complicated in non-optimal lighting conditions.

In one embodiment, the implementation of the photoluminescent element 34 may be located on the outer surface 132 of the coolant container 110 and made in the form of a fluid level indicator 134. In such an embodiment, the light source 22 that irradiates the engine compartment 18 with the first radiation 38 can excite the fluid level indicator 134 and cause the fluid level marks 138, 142 to emit the second radiation 42. The second radiation 42 would create an appearance for the observer that the marks The maximum and minimum fluid levels of the fluid level indicator 138, 142 were emitting a diffuse glow. The diffuse light emitted from the fluid level indicator 134 would make it easier to determine whether the fluid level inside the engine coolant container 110 is within the filling range, since the maximum and minimum fluid level marks 138, 142 would be clearly shown to the observer. The fluid level indicator 134 may be applied to the outer surface 132 of the coolant container 110 by any of the aforementioned application methods described in connection with the photoluminescent elements 34, including dyeing, screen printing and packing printing. It should be understood that the photoluminescent element 34 can be made as a fluid level indicator and deposited on the outer surfaces of other fluid containers within the engine compartment 18 (for example, a windshield washer fluid container 114 or a steering fluid container 118. control with an amplifier) and be excited in a manner substantially similar to that described in connection with engine coolant container 110.

FIG. 7 is an enlarged cross-sectional view of the engine coolant container 110 of FIG. 6 for a more detailed display. When used, the engine coolant container 110 functions as a reservoir for the engine coolant 150. When the engine coolant 150 occupies the overflow container 110, it calms down to form a fluid level 154, above which the free space 158 is defined inside the engine coolant container 110. As vehicle 10 needs more or less engine coolant 150, the fluid level 154 dynamically rises or falls inside the engine coolant container 110, thereby expanding or compressing the free space 158. At the top of the container 110 is located the second source 162 of light placed within the free space 158 of the container 110. It should be noted that the second source 162 of light may be located anywhere in the upper part of the container 110, and also along side portions of container 110 or lid 122. Second light source 162 can emit fifth radiation 166, which is similar to first radiation 38 in its ability to excite photoluminescent element 34 or many photoluminescent elements 82 into emitting second radiation 42. In an exemplary embodiment, the second The light source 162 is an LED, which operates essentially as described above in connection with the first light source 22. In other embodiments, the second light source 162 may be a light guide, fiber optics, or other light source. The second light source 162 may be activated by opening the hood 30, initializing the feature of the vehicle, or may be configured to operate continuously.

Again with reference to FIG. 7, according to one of the exemplary embodiments, the photoluminescent element 34 may be located on the inner surface of the coolant container 110 and adapted to cover the inner surface of the container 110. The photoluminescent element 34 may cover most of the inner side of the container 110, including above and below the level of 154 fluid. In other embodiments, the implementation of the photoluminescent element 34 may cover only part of the container 110 for the engine coolant or be applied in the form of some ornament or pattern.

As also shown in FIG. 7, the photoluminescent element 34 is substantially subjected to backlighting by a second light source 162 relative to the observer. In other words, the photoluminescent element 34 is located between the observer and the second source 162 of light. As the fifth emission 166 is emitted from the second light source 162, it propagates outside and contacts the engine coolant 150. Fifth radiation 166 and engine coolant 150 interact in such a way that the fifth radiation is substantially reflected or absorbed by engine coolant 150. The reflected portion of the fifth radiation 166 then continues inside the free space 158 until it penetrates and excites the photoluminescent element 34. The back-lit configuration of the photoluminescent element 34 and the transparent or semi-transparent nature of the engine coolant container 110 allow the second radiation 42 passed through the engine coolant container 110 and out into the engine compartment 18. The resulting reflection and absorption effect of the fifth radiation 166 is It is that the engine coolant container 110 appears to be essentially highlighted above, but not below the fluid level 154. In other words, the coolant container 110 is essentially illuminated only in portions corresponding to the free space 158. As such, the fluid level 154 can be visible from the outside and be defined by the observer as the interface between the illuminated and unlighted parts of the engine coolant container 110.

As the fluid level 154 rises inside the engine coolant container 110, the illuminated portion of the engine coolant container 110 decreases, and as the fluid level 154 descends, the illuminated portion of the engine coolant container 110, which visible to a person outside, will increase. Thus, the coolant fluid level 154 150 can be easily determined by an observer based on the degree of illumination of the engine coolant container 110. In some embodiments, the intensity of the first radiation 38, and therefore the second radiation 42, can be tied to the internal backlight, so that the effects of day and night can be taken into account and the intensity adjusted. An ordinary specialist in the field of technology will be understood that the photoluminescent element 34 may be deposited on the inner surface of the container 114 for the windshield washer fluid and the container 118 for the power steering fluid, based on the condition that the fluid level inside these containers 114 , 118 for a fluid could be determined essentially in a similar way.

In embodiments using photoluminescent materials on both, the outer surface 132 and the inner surface of the engine coolant container 110, different elements (for example, the first photoluminescent element 86, the second photoluminescent element 90 or the third photoluminescent element 94) from a variety of photoluminescent elements 82 can be used for each surface. In one of the exemplary embodiments, the first photoluminescent element 86 may be located on the inner surface of the engine coolant container 110, and the second photoluminescent element 90 may be located on the outer surface 132 and designed as a fluid level indicator 134. Once the fluid level 154 is determined based on the degree of illumination of the engine coolant container 110, as described above, it can be compared with the maximum and minimum marks 138, 142 of the fluid level indicator 134 to help the observer determine if the level is 154 fluids within the proper filling range. To assist in determining whether the fluid level 154 is within the proper filling range, the first and second photoluminescent elements 86, 90 can be made with the ability to emit different colors from each other (for example, the second and third emissions 42, 98).

For the purpose of describing and demarcating these doctrines, it is noted that the terms "substantially" and "approximately" are used in this application to present the inherent degree of uncertainty that can be attributed to any quantitative comparison, value, dimension, or other representation. The term "substantially" and "approximately" are also used in the materials of this application to represent the extent to which a quantitative representation may deviate from the stated reference value without leading to a change in the main function of the subject matter of the invention.

It should be understood that changes and modifications may be made to the above construction without departing from the concepts of the present invention, and in addition, it should be understood that such concepts are intended to be covered by the following claims, unless this formula explicitly states otherwise. .

Claims (32)

1. The backlit fluid level indication system for a vehicle comprising:
container;
fluid located in the container;
photoluminescent element located on the container; and
a light source configured to emit radiation to excite the photoluminescent element and thereby illuminate the container,
wherein the fluid level is determined based on the degree of illumination of the container when the photoluminescent element is exposed to radiation.
2. The fluid level indication system according to claim 1, wherein the light source is located inside the container.
3. The fluid level indication system according to claim 1, wherein the photoluminescent element is located on the inner surface of the container.
4. The fluid level indication system according to claim 3, wherein the photoluminescent element covers a large part of the inner surface.
5. The fluid level indication system according to claim 1, wherein the container is located in the engine compartment of the vehicle.
6. The fluid level indication system according to claim 5, wherein the container is a container for engine coolant.
7. The fluid level indication system according to claim 1, wherein the container further comprises an outer surface and a second photoluminescent element located on the outer surface of the container.
8. The lighting system for the vehicle container, comprising:
fluid container;
photoluminescent element located on the container; and
a light source located close to the container, wherein the light source is adapted to emit radiation of a first wavelength directed towards the photoluminescent element, wherein the photoluminescent element is adapted to convert the first wavelength to at least a second wavelength greater than the first length waves to illuminate the container.
9. The lighting system according to claim 8, wherein the fluid is located inside the fluid container, the fluid determining the level of the fluid.
10. The lighting system according to claim 9, in which the photoluminescent element is located on the inner surface of the container.
11. The illumination system according to claim 10, in which the fluid level is determined based on the degree of illumination of the fluid container when the photoluminescent element is exposed to radiation of a first wavelength.
12. The lighting system according to claim 8, in which the photoluminescent element is located on the outer surface of the container for the fluid.
13. The lighting system according to claim 8, wherein the fluid container is a container for engine coolant.
14. The lighting system for the vehicle container, comprising:
a fluid storage container that determines the level of the fluid and the free space above the fluid;
photoluminescent element located on the container; and
a light source located inside the container, configured to emit radiation to excite the photoluminescent element,
while the photoluminescent element illuminates the container above the level of the fluid.
15. The lighting system according to claim 14, wherein the fluid level is determined based on the degree of illumination of the container when the photoluminescent element is exposed to radiation.
16. The lighting system according to claim 14, in which the photoluminescent element is located on the inner surface of the container.
17. The lighting system according to claim 16, in which the photoluminescent element covers a large part of the inner surface.
18. The lighting system according to claim 14, wherein the radiation is substantially absorbed or reflected by the fluid.
19. The lighting system according to claim 14, in which the container is located in the engine compartment of the vehicle.
20. The lighting system according to claim 19, wherein the container is a container for engine coolant.
RU2015144223A 2013-11-21 2015-10-14 Liquid medium level gauge with photoluminescent backlight RU2685088C2 (en)

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BR102015026083A2 (en) 2018-02-27
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RU2015144223A (en) 2017-04-19
MX357904B (en) 2018-07-30

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