Roller blind system with integrated photovoltaic

Abstract

The invention relates to a roller blind system. The roller blind system is composed of a roller blind composed of a photovoltaic film configured to face an exterior of a building envelope when in use, and an energy storage system that can receive energy generated by the photovoltaic film. The motor may be connected via the drive system for winding the roller blind to be wound to an advanced or retracted position, and the controller is configured to operate at least the motor for causing the roller blind to be wound forward or retracted to a desired extended position.

Description

Technical Field

[0001] The present disclosure relates to a roller blind system with integrated photovoltaics, and more particularly to a roller blind system composed of a photovoltaic system. The roller blind system includes functional components capable of utilizing electricity generated by the photovoltaic system. Background Art

[0002] Roller blinds or screens have a variety of uses and are generally used to control the amount of light entering a room or space from a window, providing a blind as a covering or screen over the window. Roller blinds have a variety of uses, including commercial and industrial uses. For example, roller blinds are also used in agricultural applications to shade or block sunlight from entering a glasshouse or greenhouse or other similar enclosed space (whether for controlling light / energy entering a house, for plant growth, or for animal shelter). Offices and residential or other commercial buildings also often use roller blinds to help control glare or sunlight entering the building.

[0003] Many roller blinds are manually operated by a pull cord attached to a roller or other gear. Similarly, many roller blinds are operated via a motor and its associated gear or drive mechanism to actuate the rolled blind to unroll or unroll from a rolled state to a desired extended position. A variety of control systems are provided to allow the user to determine the length of their desired blind extension or retraction - for example, the retracted position and the extended position can be controlled, and the blind can be operated on a schedule or manually or via other user-determined control operations.

[0004] Some motorized roller blinds operate via an electrical connection to a power source (e.g. mains or building power), or may operate via batteries. Some roller blinds may also operate using a separate solar cell or photovoltaic system, usually located at a remote location, to generate electricity, store it, and then use it to advance or retract the roller blind as needed.

[0005] Wherever reference is made in this specification to external sources of information (including patent specifications and other documents), this is generally for the purpose of providing a context for discussing features of the invention. Unless otherwise stated, reference to such sources of information should not be construed as an admission in any jurisdiction that such sources of information are prior art or form part of the common general knowledge in the art. Summary of the invention

[0006] It is an object of the present disclosure to provide a roller blind system which may, at least to some extent, overcome one or more of the above problems or difficulties, or provide the industry / public with a useful choice.

[0007] An alternative object of the present disclosure is to provide a roller blind system that provides a roller blind system capable of generating its own power, advantageously wherein at least a portion of the roller blind includes a photovoltaic film that faces the outside of the building envelope when in use, or alternatively, the photovoltaic film is integrated as part of the roller blind itself and can operate independently electrically (i.e., not remotely powered by a remote photovoltaic power system or connected to a main power or building power source), and the system can at least to some extent overcome one or more of the above-mentioned problems or difficulties, or provide a useful option for the industry / public.

[0008] An alternative object of the present disclosure is to provide a roller blind system comprised of a photovoltaic film, wherein the portion of the photovoltaic film that remains exposed is substantially sufficient to enable the roller blind system to achieve minimum operation, or to provide minimum power requirements for the minimum operation of the roller blind system, by extending at least a portion of the roller blind from a fully retracted position or a fully rolled up or rolled up position.

[0009] An alternative object of the present disclosure is to provide a roller blind system consisting of a photovoltaic film capable of generating electricity, wherein the generated electricity is used to operate a lamp integrated in the roller blind system for lighting the room or space in which the roller blind system is installed.

[0010] According to at least one embodiment of the embodiments disclosed herein, in a first aspect, a rolling blind system is provided, the rolling blind system comprising:

[0011] A roller blind, the roller blind consisting of a photovoltaic film, the photovoltaic film being arranged to face the outside of the building envelope or a light source when in use,

[0012] an energy storage system that receives electricity generated by the photovoltaic film,

[0013] a motor, which can be connected via a drive system for winding up a roller blind, which is to be wound into an advanced or retracted position or between an advanced or retracted position,

[0014] A controller is configured to operate at least the motor to roll the roller blind forward or retract to a desired extended position.

[0015] According to the first aspect, the following details are provided:

[0016] The photovoltaic film may be a substantially flexible film.

[0017] The roll-up blind and the photovoltaic film may be attached or connected to each other.

[0018] The roll-up blind and the photovoltaic film may be attached or connected to each other by lamination, or may be laminated together.

[0019] The photovoltaic film may extend substantially over the width of the roll-up blind, partially or substantially completely over the width.Alternatively or additionally, the photovoltaic film may extend substantially along the length of the roll-up blind, partially or substantially completely along the length.

[0020] The interior-facing side of the photovoltaic film may consist of a decorative or non-decorative decoration.

[0021] The decorative or non-decorative decoration may be a printed layer or a laminated layer or a layer of material otherwise attached to the interior-facing side of the photovoltaic film.

[0022] The interior-facing side of the roller blind can consist of a colored layer, a non-colored layer or a colored layer.

[0023] The photovoltaic film may consist of a decorative layer or a non-decorative layer as a photovoltaic film layer, or may consist of a colored layer, a non-colored layer, or a colored layer as a photovoltaic film layer.

[0024] The energy storage system may include one or more batteries, optionally with sufficient capacity to store all the energy generated by the photovoltaic film per day.

[0025] The system may be provided in a ready-to-use configuration, wherein the energy storage system has been factory installed to have at least a minimum charge for initial operation or initial configuration in the field or to have the capability for immediate use.

[0026] The system is provided in a pre-assembled or ready-to-use configuration for field installation.

[0027] The energy storage system is provided in a disconnected state, awaiting final installation on site.

[0028] A charging port may be provided to enable or provide electrical charging to the onboard energy storage system, or alternatively, the charging port may be configured to draw power from the energy storage system (eg, in emergency use situations or as a remote charging device function).

[0029] The charging port may be a Universal Serial Bus (USB) port.

[0030] The system may be electrically independent of the building wiring system, or may be electrically independent of the building's power supply, or may be electrically connected or connectable to the building's power supply or the building wiring system to enable one or more lights to operate when the energy storage system is not sufficiently charged.

[0031] The system may also consist of a housing which is a box or cassette covering (or casing) of the system.

[0032] The system may also include one or more lights.

[0033] One or more lights may be provided to assist in illuminating the room or space in which the system is installed or operated.

[0034] One or more lights are disposed about or within the housing.

[0035] The housing may include one or more apertures through which the light from the one or more lamps may be projected or directed.

[0036] A diffuser may be provided on the face of one or more of the lamps or on the face of one or more of the apertures to diffuse the light.

[0037] The controller may adjust the brightness or luminous flux (or lumens) emitted by one or more lamps.

[0038] The light provided by the one or more lamps may be projected or directed throughout a room / space, or in an upward direction, such as toward a ceiling.

[0039] The sides or ends of the housing may include one or more lamps.

[0040] At least one of the one or more lamps is arranged to project or direct light upwardly toward a ceiling of a room / space in which the system is to be installed or operated.

[0041] At least one of the one or more lights may be disposed on an interior-facing side surface of the housing (ie, facing in the direction of an interior room / space, for example to project or direct light through the interior room / space).

[0042] The inwardly facing side surface of the housing may be angled such that a top edge of the housing extends horizontally beyond a lower edge of the housing.

[0043] The system may include one or more sensors for measuring and / or detecting one or more room conditions.

[0044] The one or more room conditions may be one or more of: motion or activity within the room / space (e.g., occupancy), light levels within the room / space (e.g., ambient flux levels within the room / space), external ambient light levels, a combination of room / space and external light levels, temperature of the room / space, a timer schedule based on time of day or day of week, manual signal input from a user, gestures from a user (e.g., macro or micro physical gestures from a user), voice or other audible sounds from a user (e.g., direct or indirect voice or audible sound activation or control or command via one or more devices capable of measuring or detecting such sounds).

[0045] The controller may operate to adjust one or more of the following:

[0046] - a motor adjusts the roller blind or screen to a desired extended position based on one or more room conditions, such as reduced light levels in the room / space or reduced incoming external light (e.g. sunlight as a light source),

[0047] - Light output levels responsive to ambient light conditions (e.g., light output may be increased or decreased stepwise as required, or provision may be made for a slow or soft start or a slow or soft end to turning one or more lights on or off).

[0048] The controller operates so that adjustments can be made based on measured or detected room conditions.

[0049] Room conditions may be measured or sensed by one or more sensors integrated with the system or as part of the housing.

[0050] Room conditions may be measured or sensed by one or more sensors remotely disposed about the room / space, and feeding signals back to the controller (eg, one or more remote sensors may communicate with the controller via a wired or wireless communication link).

[0051] The manual input from the user may be a signal sent to / received by a sensor or controller to manually provide a desired extended position of the roller blind.

[0052] A user may manually set or adjust a preferred light level in a room or a room temperature from a default setting, or based on the amount of motion or level or activity in the room over a period of time, or a predetermined timer schedule or other automatic adjustment may be adjusted based on measured or detected room / space conditions. For example, seasonal adjustments based on seasonal light source levels may be used to adjust a set point or predetermined extension position of a roller shade comprised of a photovoltaic film to a predetermined length portion.

[0053] Signals from the user for manual setting or adjustment can be communicated via a data communication link or network protocol via wired or wireless communication or network or a combination thereof (examples include but are not limited to: NFC, wi-fi, Bluetooth, LTE, Zigbee communication link or network protocol enabled systems).

[0054] Manual adjustment may be made via a switch on a control panel or housing or other associated controls of the system (eg, may have an on / off switch).

[0055] The roller shade system can be provided as a single unit that is configured to be fastened or fixed in place (e.g., the system can be fastened or fixed in place to cover (partially or substantially all of) a window or other sunlight-transmitting medium, including but not limited to one or more of the following: glass, polymer, composite material).

[0056] The system may be configured as a single module or multiple modules (optionally, wherein one or more modules may be connected or connectable, directly or indirectly, to one or more other modules), which may be factory pre-assembled or field-assembled.

[0057] The system may be provided as a single module without additional field assembly or other connections, or may be provided as a single complete unit in a ready-to-ship or ready-to-install configuration.

[0058] The system is operable independently of or independently of a building's mains or power supply, alternatively the system may be connected or connectable to a building's mains or power supply as a backup power source.

[0059] The system may communicate, or be arranged to be in communication, with a building management system (BMS).

[0060] The system may be operated or controlled via a BMS.

[0061] When the system is in use or in an installed configuration, the roll-up blind is rolled up into a configuration such that a portion of the photovoltaic film remains exposed.

[0062] Even in the fully or completely retracted blind position or the fully rolled up or rolled up position, a portion of the roll-up blind comprised of the photovoltaic film may remain exposed to face outside the building envelope when in use.

[0063] In use, a predetermined length portion of the roll-up blind comprised of the photovoltaic film may remain exposed (eg, for generating photovoltaic energy and / or for capture by the energy storage system).

[0064] In use, the predetermined length portion of the roller blind comprised of the photovoltaic film can be held advanced (or extended) from a fully or completely retracted position or from a fully rolled up or rolled up position (e.g., to expose the photovoltaic film to generate photovoltaic energy and / or capture by the energy storage system). Advantageously, the predetermined length portion can optionally be adjusted based on season or weather patterns to compensate for seasonal or weather pattern light source levels.

[0065] The system may be pre-programmed to roll up the roller shade or screen to a predetermined extended length or position (eg, an advanced or retracted position) upon initial setup (eg, initial operation or initial activation).

[0066] The maximum retracted position of the roller blind when in use may provide a predetermined minimum extended length for a minimum amount of power generation or charging substantially sufficient to enable use by the system (eg to be retained by the energy storage system).

[0067] Once installed or in the use configuration, a portion of the roller blind may remain exposed to provide trickle charging capability.

[0068] The minimum exposed surface area of ​​the photovoltaic film that remains exposed can be self-adjusted according to the minimum required trickle charge or minimum storage power requirement of the energy storage system. For example, the minimum exposed surface area of ​​the photovoltaic film can be self-adjusted according to seasonal changes to meet the minimum trickle charge or minimum storage power requirement required by the energy storage system.

[0069] The energy storage system can be a battery or other electrical energy storage device.

[0070] Data regarding one or more sensed room conditions may be provided to a building management system (BMS) or other control system.

[0071] Multiple systems can be provided, and two or more of these systems can operate substantially based on a retracted or advanced curtain length or position (or extended length) or based on substantially matching curtain positions. For example, at least two or more systems can operate based on a common or common retracted or advanced curtain length or position (or extended length).

[0072] The photovoltaic film may cover substantially all or substantially part of the surface area of ​​the roll-up blind (eg, to enable some light to pass through the blind).

[0073] The photovoltaic film may be arranged in a pattern on the roll-up blind (eg, a series of stripes, either angled or substantially vertical or substantially horizontal, with reference to the up-and-down directionality of the roll-up blind as it moves between its retracted and advanced positions).

[0074] At least the bottom portion (or tail or foot) of the roller blind may be comprised of a photovoltaic film (e.g., when the roller blind is unrolled or advanced from a retracted position, at least the first portion of the roller blind that advances from a fully or completely retracted roller blind position or in a fully rolled up or rolled up position may be comprised of a photovoltaic film, while a portion of the roller blind, such as a portion of the roller blind that may often remain substantially in a rolled up or unused or retracted position when in use, may not have a photovoltaic film).

[0075] According to at least one embodiment of the embodiments disclosed herein, in a second aspect, a rolling blind system is provided, the rolling blind system comprising:

[0076] a roller blind, the roller blind consisting of a photovoltaic film, the photovoltaic film being arranged to face the outside of the building envelope when in use,

[0077] an energy storage system that can receive electricity generated by the photovoltaic film,

[0078] a motor, which can be connected via a drive system for winding up a roller blind, which is to be wound into an advanced or retracted position,

[0079] a controller configured to operate at least the motor for winding the roller blind forward or retracting it to a desired extended position,

[0080] Wherein, when in use, a predetermined length portion of the roller blind consisting of the photovoltaic film remains exposed.

[0081] According to the second aspect, the following details are provided:

[0082] The predetermined length portion of the roll-up blind comprised of photovoltaic film that remains exposed is the minimum surface area of ​​photovoltaic film that is substantially sufficient for minimum operation of the system (or, for example, for at least minimum photovoltaic energy generation and capture or charging by the energy storage system).

[0083] The system of the second aspect further comprises any one or more of the system features defined in the first aspect.

[0084] A system as defined in the first and / or second aspects, wherein one or more of a power conditioner, power distribution device or other power modulation device is utilized. Such devices may be provided onboard as part of the system, rather than as a remote component or module.

[0085] A system as defined in the first and / or second aspects, wherein the system uses a low voltage (eg 12 V) system. This may help to improve electrical safety for installers and users.

[0086] A system as defined in the first and / or second aspects, wherein the electricity generated or stored by the energy storage system is configured to be used entirely or substantially entirely for functional parts of the roller blind system, for example by providing power to one or more lights that can be integrated into the roller blind system, or as part of a housing or curtain box configuration. In this way, the electricity generated by the photovoltaic film is used in preference to providing lighting or illumination of a room or space, for example, over lighting provided in a room or space powered by a building power supply or a mains grid. Therefore, by effectively 'shifting' the lighting power demand to the lights provided by the curtain system defined herein, the power demand of the building, room or space can be reduced. With respect to the use of the electricity stored by the energy storage system, it will be appreciated that the curtain system can retain a small amount of power to enable the roller blind to be advanced or retracted.

[0087] While it will be appreciated that the roller blind system as defined herein is preferably electrically independent of and operationally independent of the mains power source, the blind system may provide a charging port to charge or provide power to operate lights or motorized blinds in the event of a power outage, or to provide additional power to operate system functions, such as to power lights at night or provide additional redundancy to the system to allow the roller blind to be advanced or retracted when needed if the blind system runs out of power / depletes (i.e., dies).

[0088] According to at least one embodiment of the embodiments disclosed herein, in a third aspect, a rolling blind system is provided, the rolling blind system comprising:

[0089] at least one first roller blind and at least one second roller blind mounted in a substantially parallel configuration and arranged in such a manner that, in use, the first roller blind is relatively more outwardly positioned than the second roller blind, or towards a light source, and the second roller blind is relatively more inwardly positioned than the first roller blind, or away from the light source, wherein at least one of the at least one first roller blind or the at least one second roller blind, or both the at least one first roller blind and the at least one second roller blind are comprised of a photovoltaic film configured to face the light source (e.g., the exterior of a building envelope) in use,

[0090] And wherein each of the at least one first roller blind and the at least one second roller blind can operate independently; an energy storage system that can receive electricity generated by the photovoltaic film; a motor for winding up the at least one first roller blind and / or each of the at least one second roller blind, which can be connected via a drive system, and each of the first roller blind and / or the second roller blind is wound to an advanced or retracted position; a controller, which is configured to at least operate the motor so that each of the at least one first roller blind and / or the at least one second roller blind is wound forward or retracted to a desired extended position.

[0091] When the system is in use, a predetermined length portion of at least one of the roll-up blinds consisting of the photovoltaic film remains exposed to the light source.

[0092] A roller blind system may also consist of a housing which is a box or cassette covering (or housing) of the system.

[0093] The roller blind system may be a double (two) blind configuration.

[0094] At least one first roll-up blind can consist of a photovoltaic film, or a portion of the first roll-up blind can consist of a photovoltaic film.

[0095] At least one second roll-up blind can consist of a photovoltaic film, or a portion of the second roll-up blind can consist of a photovoltaic film.

[0096] The photovoltaic film of the first roller blind or the photovoltaic film of the second roller blind, or the photovoltaic film of a part of the first roller blind or the photovoltaic film of a part of the second roller blind can be substantially the tail or foot of both the first roller blind and / or the second roller blind, and the photovoltaic film can extend substantially across the width of the roller blind, partially or substantially completely across the width, or alternatively or additionally, the photovoltaic film can extend substantially along the length of the roller blind, partially or substantially completely along the length.

[0097] The second roller blind may be a substantially blackout type roller blind.

[0098] The second roller blind may be substantially free of photovoltaic film.

[0099] A portion or portions of the second roller blind (e.g., segmented portions or sections that may optionally be separated from one another) may consist of a photovoltaic film. Optionally, in the case where a portion or portions of the extended length of the second roller blind consist of a photovoltaic film, the remainder of the extended length of the second roller blind may be free of a photovoltaic film and may be a blackout type blind material.

[0100] The portion of the second roll-up blind consisting of the photovoltaic film may be the tail or foot (ie the bottom or lower portion) of the second roll-up blind.

[0101] The portion of the second roll-up curtain consisting of the photovoltaic film may be about 95% or less of the stretched length of the second roll-up curtain, or may be about 90% or less of the stretched length of the second roll-up curtain, or may be about 80% or less, or may be about 75% or less, or may be about 70% or less, or may be about 60% or less, or may be about 50% or less, or may be about 40% or less, or may be about 30% or less, or may be about 25% or less, or may be about 20% or less, or may be about 15% or less, or may be about 10% or less, or may be about 5% or less.

[0102] The first roller blind may consist of a photovoltaic film.

[0103] A portion or portions of the first roller blind (eg segmented portions or sections which may optionally be separated from one another) may consist of a photovoltaic film.

[0104] The portion of the first roller blind consisting of the photovoltaic film may be about 100% or less of the stretched length of the first roller blind, or may be about 95% or less of the stretched length of the first roller blind, or may be about 90% or less, or may be about 80% or less, or may be about 75% or less, or may be about 70% or less, or may be about 60% or less, or may be about 50% or less, or may be about 40% or less, or may be about 30% or less, or may be about 25% or less, or may be about 20% or less, or may be about 15% or less, or may be about 10% or less, or may be about 5% or less.

[0105] The system, wherein in the extended length of the second roller blind, the second roller blind may include at least one portion consisting of a photovoltaic film and at least one other portion being a shading material (e.g., may not have a photovoltaic film), and wherein in the extended length of the first roller blind, the extended length of the first roller blind may be substantially composed of a photovoltaic film.

[0106] The second roll-up blind may consist of a portion comprising a photovoltaic film and the remainder of the extended length consists of a light blocking type material (without a photovoltaic film), and the first roll-up blind consists essentially of a photovoltaic film.

[0107] The first roller blind may be configured in the manner defined in the roller blind system in the first aspect and / or the second aspect.

[0108] The second roller blind may be configured in the manner defined in the roller blind system in the first aspect and / or the second aspect.

[0109] The system as described above, wherein the first roller blind and the second roller blind may be configured in a single housing or casing as defined in the first aspect and / or the second aspect.

[0110] With respect to any of the first, second or third aspects described above, in the case where the photovoltaic film is provided as part of a roll-up blind, the photovoltaic film consists of a front side or positive side that initially receives light or energy from a light source or energy source and a rear side or back side consisting of a reflector for reflecting the received energy (e.g., energy from the light source or energy source).

[0111] Any of the above-mentioned features, embodiments or aspects may be combined with one or more of the other features, embodiments or aspects described herein.

[0112] The term "comprising" as used in the specification and claims means "consisting at least in part of..." When interpreting each statement in the specification and claims containing the term "comprising", there may also be features other than this term or features beginning with this term. Related terms such as "including" and "containing" should be interpreted in the same way.

[0113] Reference to numerical ranges disclosed herein (e.g., 1 to 10) is also intended to include all rational numbers within that range (e.g., 1, 1.1, 2, 3, 3.9, 4, 5, 6, 6.5, 7, 8, 9, and 10) and any range of rational numbers within that range (e.g., 2 to 8, 1.5 to 5.5, and 3.1 to 4.7), and thus, all subranges of all ranges explicitly disclosed herein are explicitly disclosed herein. These are merely examples for specific purposes, and all possible combinations of values ​​between the lowest and highest values ​​recited should be considered to be expressly stated in this application in a similar manner.

[0114] As used herein, the term "and / or" means "and" or "or", or both.

[0115] A noun as used herein may refer to a plural form and / or a singular form of the noun.

[0116] For those skilled in the art to which the present invention relates, many structural changes and distinct embodiments and applications of the present invention can be imagined without departing from the scope of the present invention defined by the appended claims. The disclosure and description herein are purely illustrative and are not intended to be limiting in any way.

[0117] The present disclosure is constituted by the foregoing and also contemplates configurations of which the following are given only as examples. The features disclosed herein may be combined into new embodiments that solve compatible components of the same or related inventive concepts. BRIEF DESCRIPTION OF THE DRAWINGS

[0118] Preferred embodiments of the present disclosure will be described, by way of example only, with reference to the following drawings.

[0119] Figure 1 A front (from an interior position) perspective illustrative view of an exemplary embodiment of a roller shade system as disclosed herein is shown.

[0120] Figure 2 A perspective illustrative view of a rear or outer side surface (from an exterior position) of an exemplary embodiment of a roller shade system as disclosed herein is shown.

[0121] Figure 3 A plurality of roller shade systems are shown as viewed from an interior position, illustrating how such an array or a plurality of such roller shade systems may be viewed when arranged in a side-by-side or substantially adjacent type configuration and located in front of a window W.

[0122] Figure 4A schematic diagram of a first roller blind A is shown, which can be connected to another roller blind B by electrical connection or via a communication data link (or both), whether the second roller blind is a typical roller blind or a roller blind system as described herein. Also shown are optional configurations of a plurality of other units, such as the unit shown as unit N, which can be connected to other roller blind units or roller blind systems.

[0123] Figure 5 A front perspective view of a double roller blind system is shown.

[0124] Figure 6 A rear perspective view of the dual roller blind system is shown in a first configuration.

[0125] Figure 7 A rear perspective view of the dual roller blind system is shown in a second configuration.

[0126] Figure 8 A plurality of dual roller shade systems are shown as viewed from an interior position, illustrating how such an array or a plurality of such roller shade systems may be viewed when arranged and positioned in front of a window W in a side-by-side or substantially adjacent type configuration.

[0127] Fig. 9A A schematic diagram of a double roller blind system with a first roller blind B1 and a second roller blind B2 is shown in a first configuration.

[0128] Fig. 9B The second configuration is shown Fig. 9A Schematic diagram of a double roller blind system.

[0129] Fig. 10A A schematic diagram of a double roller blind system with a first roller blind B1 and a second roller blind B2 is shown in a first configuration.

[0130] Fig. 10B Shown in the second configuration Fig. 10A Schematic diagram of the double roller blind system in . DETAILED DESCRIPTION

[0131] Various embodiments are described with reference to the accompanying drawings. Throughout the drawings and the specification, the same reference numerals may be used to designate the same or similar components, and redundant descriptions thereof may be omitted.

[0132] As described herein in various embodiments is a roller blind system.

[0133] In a first embodiment, a roller blind system 1 is provided, which includes a roller blind 2, the roller blind 2 being composed of a photovoltaic film 3, the photovoltaic film being configured to face the outside 4 of the building envelope when in use. An energy storage system (not shown, but located in a housing 5 or a curtain box) can receive electrical energy generated by the photovoltaic film 3. A motor (not shown, but located in the housing or the curtain box) can be connected via a drive system for winding the roller blind 2, thereby winding the roller blind 2 to an advanced or retracted position. A controller (not shown, but located in the housing 5 or the curtain box) is configured to operate at least the motor for winding the roller blind forward or retracting to a desired extended position or length L.

[0134] In a second embodiment, there is provided a roller blind system 1 as described with reference to the first embodiment above, further wherein in use a predetermined length (PL) portion of the roller blind 2 consisting of the photovoltaic film 3 remains exposed.

[0135] In a third embodiment, a roller blind system 1 is provided, substantially as described with reference to the first embodiment, additionally comprising one or more lamps 7 powered by an energy storage system.

[0136] In a fourth embodiment, a system is provided, comprising one or more of the roller blind systems 1 as described with reference to any one of the first, second or third embodiments, wherein such roller blind system 1 is electrically connectable or interconnectable to at least one additional motorized blind in order to power the one or more additional motorized blinds.

[0137] A detailed description will now be provided with reference to the above-described embodiments, the drawings and the claims.

[0138] Advantageously, a roller blind system 1 is provided which can be provided in a ready-to-use configuration, either as a single unit or module, or as a series of units or modules which can be easily interconnected or assembled at the factory or on site.

[0139] The system 1 can be provided in a completely portable configuration so that it can be installed and removed each time as needed, and it is self-contained and can substantially generate enough electricity to operate the motor for advancing or retracting the roller blind. In addition, including one or more lights 7 in such a system 1 can allow the roller blind system to control the light in the room or space by advancing or retracting the roller blind itself, and one or more lights 7 can also be operated to artificially illuminate the room or space. In this way, the photovoltaic film 3 can generate electricity and can be used by the system 1.

[0140] For safety reasons of the consumer or installer or a particular site, such a system 1 may be operated at a relatively low voltage, for example as a 12 volt system, although other voltage systems may be employed as desired.

[0141] Industrial, commercial, residential and other buildings (including agricultural or livestock buildings) can use roller blinds or screen systems to control the amount of light or solar radiation entering the building or space. The particular advantage of providing a roller blind system that integrates a photovoltaic film 3 (a substantially flexible film) with the roller blind itself is that it enables the solar energy of light entering the space to be controlled, while also achieving the dual advantage of generating electricity when the roller blind is moved from a fully retracted position (or rolled up or rolled configuration) to a more advanced (extended) (or unfolded or extended configuration) position. The system can utilize the electricity generated from this configuration according to the needs of the user.

[0142] However, in a particular configuration, one or more lights 7 can be integrated with the roller blind system 1. For example, as part of the housing 5 in which the roller blind is arranged, or as part of a curtain box (a curtain box generally refers to a housing 5 in which the roller blind is arranged or protected or visually hidden). The housing 5 can be in the shape of a curtain box.

[0143] Thus, providing one or more lamps 7 (e.g., LED-type lamps) powered by electricity generated by the photovoltaic film (optionally stored in an energy storage system) makes it possible to control the lighting level within a room or space. For example, the roller blind can be in a partially or fully extended state or position, and the photovoltaic film 3 is then exposed to receive light passing through the window W or other light-transmitting material (which can be, for example, a polymer or glass or other material). During the day, as long as the photovoltaic film is exposed, electricity can be generated and stored for use. When the level of solar radiation is relatively high, or on a relatively warm day in the environment (or for any other reason), or when the light is generally bright, the roller blind can be partially or fully extended to control the natural light entering the building through the window. This helps to reduce the light and solar gain within the room or space. At the same time, electricity can also be generated.

[0144] For example, in a situation where a roller blind reduces light levels below a desired internal light level, rather than retracting the roller blind to allow more natural light (and solar gain) into a room or space, electricity generated from the photovoltaic film 3 can be used to power one or more lights 7 to artificially illuminate the room or space.

[0145] Such roller blind systems 1 described herein can be used as part of multiple typical motorized roller blinds, for example (depending on the power requirements of typical motorized roller blinds), one or more roller blind systems described herein can be used to provide power to operate other typical motorized roller blinds. In this way, the roller blind composed of the photovoltaic film 3 can be a power generating roller blind system 1, which can be electrically connected or interconnected with other typical motorized roller blinds in a suitable manner. Such connections between roller blinds can be achieved via various electrical connection systems. Data connections can also be provided, for example for shared control systems, so that curtains or lighting or other devices can be collectively or simultaneously controlled.

[0146] Similarly, two or more roller shade systems 1 as described herein can be operatively (e.g., electrically) connected to each other. For example, a roller shade system 1 such as described herein may be exposed to higher or lower insolation levels at certain times of the day than other shades, and thus power sharing can be utilized across a network or array of shade systems to allow power to be collectively distributed between the network or array as needed.

[0147] Providing one or more lights 7 allows the use of electricity generated by the photovoltaic film 3. In this way, the power demand of a building or facility or room or space can be reduced by effectively reducing the need for mains or building powered lighting in the room or space. Artificial lighting within a building, room or space can account for a reasonable amount of the total electricity use of the building. Any reduction in the total electricity use of a building is beneficial.

[0148] Such a housing 5 or a curtain box can integrate one or more lamps 7 .

[0149] Ideally, the photovoltaic film utilized is a substantially flexible film. In this way, the flexible film can be rolled up as part of a roll-up blind and can be repeatedly rolled up and unrolled and is substantially suitable for repeated use without degrading performance.

[0150] The roll-up blind and the photovoltaic film can be attached or connected to each other. For example, where there are multiple layers, the layers can be laminated together, or can be bonded or adhered to each other, or can be sewn or sewed to each other, including using mechanical connections and thermoforming to attach or connect or otherwise connect the blind material to the photovoltaic film.

[0151] It should also be understood that the photovoltaic film itself can be a curtain material, or a separate curtain material or layer can be provided to which the photovoltaic film is connected or attached. In this case, if the curtain material is to be provided as a separate layer separate from the photovoltaic film, a color or pattern or other decoration can be applied to the inside (i.e., the side facing the room / space) of the photovoltaic film or curtain material. This can include tints, colors, etc.

[0152] The photovoltaic film 3 may extend substantially over the width 6 of the roller blind, or may extend partially over the width 6 of the roller blind, may extend partially or substantially completely over the width. Alternatively or additionally, the photovoltaic film may extend substantially along the length of the roller blind, partially or substantially completely along the length. As described above, the side of the photovoltaic film 3 facing the interior (i.e., the room) may optionally include decorative or non-decorative decorations.

[0153] Where a decorative or non-decorative decoration is provided, this may be in the form of a printed or laminated layer or otherwise attached or applied layer of material to the interior (ie room) facing side of the photovoltaic film.

[0154] As mentioned above, the interior (ie room) facing side of the roller blind may consist of a colored layer, an uncolored layer or a colored layer.

[0155] The photovoltaic film may consist of a decorative layer or a non-decorative layer as a photovoltaic film layer, or may consist of a colored layer, a non-colored layer, or a colored layer as a photovoltaic film layer.

[0156] The energy storage system (not shown, but hidden within the housing 5) may include one or more batteries. The energy storage system has sufficient capacity to store all the energy generated by the photovoltaic film each day.

[0157] System 1 can be provided in a "ready-to-use" configuration, in which the energy storage system is installed at the factory to have at least a minimum charge for initial operation or initial configuration on site or to have immediate use capability. The energy storage system can be charged at the factory, but simple on-site steps may be required to safely allow the energy storage system to effectively become part of the circuit (for example, a strip of non-conductive material may be provided to prevent the establishment of a circuit between the energy storage system and the rest of the power supply or control system). Alternatively, the energy storage system may be provided as a separate unit or module that can be relatively easily connected or installed to the on-site location of use. Alternatively, the energy storage system may be provided in a disconnected state, awaiting final installation or on-site connection during installation.

[0158] In various embodiments, it is advantageous to provide a system or series of units or modules for easy assembly on site. Alternatively, the system is provided for on-site installation in a pre-assembled or "ready-to-use" configuration.

[0159] While it is contemplated that the system 1 described herein is intended to be electrically independent of a building's power or wiring system, a charging port may be provided to provide emergency or supplemental charging for the onboard energy storage system, or alternatively, a charging port may be provided to draw power from the energy storage system (e.g., in emergency use situations or as a remote charge of a device function). This provides some redundancy.

[0160] The charging port can be any form of electrical connection, but in one example can be in the form of a universal serial bus (USB) port, or can be other electrical port configurations configured to receive or provide power and / or data links. For example, Power over Ethernet (PoE) can be utilized.

[0161] Where the system 1 includes one or more lights 7, these lights may be used to assist in illuminating the room or space in which the system is installed. The lights 7 may be disposed about or within the housing 5. For example, the housing 5 may include one or more apertures (also identified as 7 on the housing 5) through which light from the one or more lights is projected or directed.

[0162] A diffuser may be provided on the face of one or more lamps or on the face of one or more apertures to diffuse the light.

[0163] One or more lamps or lamp groups may be provided, and a reflector may be arranged behind the lamp or lamp group. One or more lamps are positioned in front of the reflector, optionally, a diffuser is positioned in front of the lamp, and optionally, this arrangement of reflectors and lamps is arranged in a housing 5 (e.g., a curtain box, or a curtain box type curtain box device).

[0164] Reflectors may be selected to help project or direct light throughout substantially the entire room or space, or toward the ceiling of the room or space to help distribute the light throughout the room or space.

[0165] A controller (not shown, but integrated into the circuit and located within housing 5) may be used to controllably and selectively adjust the brightness or luminous flux (or lumens) emitted by one or more lamps.

[0166] In one embodiment, the side or end surface of the housing 5 may include one or more holes to allow one or more beams of light to be emitted.

[0167] In another embodiment, it may be advantageous to position at least one of the one or more lamps so as to project or direct light upwardly toward the ceiling of the room / space in which the system is to be installed.

[0168] For example, at least one of the one or more lamps can be disposed on an interior-facing side surface of the housing (i.e., facing the direction of the interior room / space). In another example, at least one of the one or more lamps can be disposed on a top (or ceiling)-facing side surface of the housing (i.e., the top surface of the housing, which is generally facing upward toward the ceiling).

[0169] In the example where one or more lights are disposed on an inwardly facing side surface of the housing, such side surface may be angled so that the top edge of the housing extends horizontally beyond (or further outward than) the lower edge of the housing. This would form an angled face.

[0170] In various embodiments, one or each lamp or group of lamps may be provided with a reflector, the lamp being located in front of the reflector, optionally a diffuser being located in front of the lamp, and optionally this arrangement of reflector and lamp being provided within a housing or within the body of a cassette arrangement.

[0171] In various embodiments, system 1 includes one or more sensors 8 for measuring and / or detecting one or more room conditions.

[0172] The one or more room conditions may be one or more of: motion or activity within the room / space (e.g., occupancy), light levels within the room / space (e.g., ambient flux levels within the room / space), external ambient light levels, a combination of room / space and external light levels, temperature of the room / space, a timer schedule based on time of day or day of week, manual signal input from a user, gestures from a user (e.g., macro or micro physical gestures from a user), voice or other audible sounds from a user (e.g., direct or indirect voice or audible sound activation or control or command via one or more devices capable of measuring or detecting such sounds).

[0173] The controller may operate to adjust one or more of the following:

[0174] - a motor to adjust the roller blind or screen to a desired extended position based on one or more room conditions, such as reduced light levels in the room / space or reduced incoming external light (e.g. sunlight as a light source),

[0175] - Light output levels responsive to ambient light conditions (e.g., light output may be increased or decreased stepwise as required, or provision may be made for a slow or soft start or a slow or soft end to turning one or more lights on or off).

[0176] The controller can make adjustments based on measured or detected room conditions.

[0177] For example, room conditions may be measured or sensed by one or more sensors integrated with the system or as part of the housing. Such measurement or sensing may be performed by one or more sensors remotely disposed around the room / space and feeding signals back to the controller (e.g., one or more remote sensors communicating with the controller via a wired or wireless communication link).

[0178] In some configurations, manual input from a user may be sent, for example, a signal may be sent / received to / from a sensor or controller, to manually provide a desired extended position of the roller blind.

[0179] The user may also manually set or adjust the preferred light level in a room or the temperature of a room from a default setting or based on the amount of motion or level or activity in the room over a period of time, or may adjust a predetermined timer schedule or other automatic adjustment based on measured or detected room / space conditions. For example, seasonal adjustments based on seasonal light source levels may be used to adjust a set point or predetermined extension position of a roller shade comprised of a photovoltaic film to a predetermined length portion.

[0180] The controller may take into account sensed and measured room conditions on its own, and take into account user input settings or control signals.

[0181] The signals used by the user for manual setting or adjustment can be communicated via a data communication link or network protocol via wired or wireless communication or network or a combination thereof (examples include but are not limited to: NFC, wi-fi, Bluetooth, LTE, Zigbee communication link or network protocol enabled systems).

[0182] It should also be understood that manual adjustments can be made via a control panel or switch on the housing or other associated controls of the system (eg, may have an on / off switch or other touch panel or control channel).

[0183] Advantageously, the roller blind system 1 is provided as a single unit that is configured to be fastened or fixed in place (e.g., the system may be fastened or fixed in place to cover (partially or substantially entirely) a window or other sunlight-transmitting medium, including but not limited to one or more of the following: glass, polymer, composite material). An example of a fastening or fixing system is a mechanical bracket 9 that may be provided that may be attached to a wall or window frame or ceiling of a room via screws.

[0184] In some embodiments, system 1 is configured as a single module or multiple modules (optionally, where one or more modules may be directly or indirectly connected or connectable to one or more other modules), which may be factory pre-assembled or field-assembled.

[0185] In some embodiments, the system 1 is provided as a single module without additional on-site assembly or other connections, or as a single complete unit in a ready-to-ship or ready-to-install configuration.

[0186] Alternatively, the system 1 may be provided as a multi-module configuration, which includes a first module as the housing 5 , a second module as the roller blind, and a third module as an energy storage system pack (eg, a battery pack).

[0187] The system 1 or a controller of the system 1 may enable or provide communication with a building management system (BMS), or receive control signals or be controllable via a BMS.

[0188] When the curtain system is in the in-use or installed configuration, the curtain is rolled into a configuration in which a portion of the photovoltaic film 3 remains exposed and exposed to the outside of the building envelope. In this way, even if the curtain is fully rolled up, a small portion of the photovoltaic film remains exposed. This can allow a small amount of charging or power generation after the system has been installed, even if the unit is now activated. In a further alternative, once the system has been installed and the unit is activated, there can be a default setting in which a small portion or length of the curtain can be unrolled or advanced from the fully rolled-up state (for example during transportation) to provide the minimum length portion that may need to be exposed to generate some power or charge from the photovoltaic film 3 that is subsequently exposed to light.

[0189] For example, even in a fully or completely retracted shade position, a portion of the photovoltaic film may remain exposed, facing outside of the building envelope, during use.

[0190] For example, a predetermined length portion LP of the roll-up blind comprising the photovoltaic film 3 remains exposed (eg for generating photovoltaic energy and / or for capture by the energy storage system).

[0191] When in use, a predetermined length portion of the roller blind (including the photovoltaic film) can be maintained advanced from a fully or completely retracted position (e.g., for generating photovoltaic energy and / or capture by the energy storage system). This predetermined length portion can be adjusted by the controller over time as the controller learns the charge generated by different surface areas of the photovoltaic film exposed at different times of the day or season, or the system or controller can be pre-programmed with specific values ​​based on geographic location, or can be associated with weather forecasts.

[0192] In a further embodiment, the system can be pre-programmed so that the roller blind or curtain is rolled to a predetermined extended length or position (e.g., rolled to an advanced or retracted position) during initial setup. For example, this can be a predetermined length PL, or it can be a longer length L.

[0193] The maximum retracted position of the curtain when in use can provide a predetermined minimum extended length that is substantially sufficient to achieve a minimum amount of power generation or charge for use by the system (e.g., or to be retained by the energy storage system). For example, the system 1 can be configured to ensure that the tail remains suspended outside the housing 5 so that a portion of the photovoltaic film 3 is exposed for power generation. In this regard, once installed or in a use configuration, a portion of the curtain (e.g., a predetermined length portion PL) will remain exposed to provide a trickle charging capability for the energy storage system.

[0194] The minimum exposed surface area of ​​the photovoltaic film 3 that remains exposed can be self-adjusted according to the required minimum trickle charge or minimum storage power requirement of the energy storage system. For example, the minimum exposed surface area of ​​the photovoltaic film that remains exposed can be self-adjusted according to seasonal changes to meet the minimum required trickle charge or minimum storage power requirement of the energy storage system.

[0195] While the energy storage system may be a battery, other electrical energy storage device(s) may also be used.

[0196] In further embodiments, data related to one or more sensed room conditions may be provided to a building management system (BMS) or other control system.

[0197] A plurality of roller blind systems 1 may be provided, and two or more of them may operate according to a retracted or advanced blind length or position (or extended length) or according to substantially matching blind positions. For example, at least two or more systems may operate according to a common or common retracted or advanced blind length or position (or extended length). In this way, an array or network or networking arrangement of a plurality of roller blind systems 1 may be provided.

[0198] With regard to the photovoltaic film 3, the photovoltaic film 3 may cover substantially all or substantially part of the surface area of ​​the curtain (eg, to enable some light to pass through the curtain).

[0199] The photovoltaic film 3 itself may be arranged as a pattern on the curtain (eg a series of stripes, either angled or substantially vertical or substantially horizontal, with reference to the up and down directionality of the curtain as it moves between its retracted and advanced positions).

[0200] In some embodiments, at least a bottom portion (or foot) of the curtain may be comprised of a photovoltaic film. For example, when the curtain is unrolled or advanced from a retracted position, at least a first portion of the curtain that advances from a fully or completely retracted curtain position may be comprised of a photovoltaic film, while a portion of the curtain (e.g., a portion of the curtain that may often remain substantially in a rolled up or unused or retracted position when in use) may be free of a photovoltaic film.

[0201] In other embodiments, the roller blind system 1 as described herein can be coupled or interconnected to other motorized roller blind units to receive their power from the system 1. For example, unit A can be connected to unit B, such as Figure 4 As shown. Other units N as needed may also be connected. The interconnections may be different types of electrical or data connections or both to help facilitate coordination or network control of shade control or lighting control.

[0202] The system 1 described herein can provide emergency power (via a charging port) and / or lighting. For example, during a power outage, such a system is electrically independent and can operate lights as needed to illuminate a room or space.

[0203] One or more lights may also project or direct light downwardly across a room or space.

[0204] The system described herein provides a portable unit that can be retrofitted to both new and old buildings or spaces.

[0205] The maximum operating voltage of the systems described herein is preferably 30 volts or less, but depends on the application.

[0206] Multiple units can be connected in series or parallel depending on the desired power configuration.

[0207] The power generated can be monitored and data related to power generation capacity can be stored. This data can be input into the system controller to optimize operating parameters, such as the length or surface area of ​​the photovoltaic film that may need to be exposed to achieve the lowest power generation capacity. Solar tracking functions can also be included to help determine the network configuration of one or more shades to help improve the power generation efficiency and / or light control efficiency of a room or space.

[0208] In various embodiments, the electricity generated or stored per day or per light / dark cycle is consumed by one or more lamps. In this way, the power consumption of artificial lighting in a room or space can be minimized or significantly reduced by ensuring that the electricity generated per day is substantially used up.

[0209] Such systems may be connectable to cloud or internet based systems for remote monitoring or control or networking capabilities.

[0210] In addition to the above description, the details thereof may also be incorporated into further roller blind systems. For example, a roller blind system consisting of two or more roller blinds, which are usually arranged parallel to each other, a so-called "double curtain" configuration. Such a multi-curtain system may typically allow one of the roller blinds to have some light blocking properties (e.g., the second roller blind B2) while still allowing some light to pass through its curtain material, while the other roller blind (e.g., the first roller blind B1) may be used as a device that completely blocks light transmission, and may in fact be used as a blocking curtain or a blackout curtain to substantially block the passage of almost all light.

[0211] Advantageously, whether it is a single roller blind (for example, the first roller blind B1 when set as a photovoltaic film roller blind) or a combination of two blinds (for example, the first roller blind B1 and the second roller blind B2), it basically blocks or blocks almost all light from entering the building or space (for example, sunlight, street lights), and blocks light from emitting from the building or space composed of such a roller blind system (for example, internal lighting). In this way, shading can be provided in two directions (blocking or preventing light from entering the building or space, and blocking or preventing light from leaving the building or space). This can provide a secondary function of protecting privacy within a building or space (such as a bedroom or other space that may require privacy).

[0212] In an example operating mode of a dual roller blind system, the second roller blind B2 can be in an extended length position to provide sunshade, and if it includes a portion (such as a tail or foot) composed of a photovoltaic film, a sunshade effect and some photovoltaic power generation can be generated, while the first roller blind B1 is in a retracted position. In a further example operating mode, the first roller blind B1 can be rolled up to an extended or extended length position to provide additional photovoltaic power generation, as well as additional shading (or privacy). At night, both the first roller blind B1 and the second roller blind B2 can be in an extended or extended length position to block light from the outside / external environment (to prevent or block street lights / external lighting at night, morning sunlight, and block light from inside the building from shining outdoors) and privacy functions in the evening and at night, and may also include daytime for privacy purposes.

[0213] refer to Figures 5 to 10B The following embodiment is such a multi-curtain configuration, however each roller blind can be configured or operated as part of a roller blind system as defined in the previous embodiment.

[0214] In this further embodiment, a roller blind system 10 can be provided, which consists of at least one first roller blind B1 and at least one second roller blind B2, and the first roller blind and the second roller blind are installed in a basically parallel configuration and arranged in the following manner: when in use, the first roller blind B1 is positioned relatively more outward or toward the light source 40 than the second roller blind B2, and the second roller blind B2 is positioned relatively more inward or away from the light source 40 than the first roller blind B1.

[0215] At least one of the first roller blind B1 or the second roller blind B2, or both the first roller blind and the second roller blind are composed of a photovoltaic film 30, which is configured to face a light source 40 (e.g., outside of a building envelope) when in use. Each of the first roller blind and the second roller blind can operate independently, and the energy storage system can receive electricity generated by the photovoltaic film. The motor can also be connected via the drive system for winding each of the first roller blind and / or the second roller blind, each of the first roller blind and / or the second roller blind is wound to an advanced or retracted position, wherein the controller is configured to at least operate the motor to cause each of the first roller blind and / or the second roller blind to be wound forward or retracted to a desired extended position. In the figure, the full extension length is represented by L.

[0216] In some embodiments, in use, a predetermined length portion of at least one of the roll-up blinds comprised of photovoltaic film 30 remains exposed for exposure to a light source to generate the minimum charge or power requirement required by the system. Fig. 9A and Fig. 10A , which shows a portion of the photovoltaic film 30 on the roller blind B1 as an extended portion extended from a fully rolled-up configuration. Such a configuration allows a small length or tail to remain exposed to generate charge or power, which may be sufficient to meet the minimum power requirements of the system, such as for operating a light of the housing or casing or operating a motor to advance or retract the roller blind (B1 or B2) to a desired extended length.

[0217] Fig. 9A and Fig. 9B The second roller blind B2 is shown as a configuration that is only a blackout type curtain and operates to provide blackout capability when needed, while the first roller blind B1 is composed of a photovoltaic film 30 and operates to provide not only power generation, but also a blackout layer for the interior of the building due to the blackout properties of the photovoltaic film. In this configuration, a first (but partial) blackout for the interior of the building can be provided by exposing a small section of the photovoltaic film tail or foot of the first roller blind B1, and an additional layer or blackout can be provided by the second roller blind B2. Fig. 9B Shows Fig. 9A configuration, in which the first roller blind B1 is further extended to better shade the interior of the building (ie, shading capability), while also having the additional benefit of generating more electricity through the photovoltaic film.

[0218] Fig. 10A and Fig. 10B Shown with Fig. 9A and Fig. 9BA similar configuration is provided, but the second roller blind B2 has a portion P composed of a photovoltaic film, and the rest of the second roller blind B2 does not have the photovoltaic film 30, but has a light shielding capability (to reduce the transmission of light, but still allow some light to pass through, as shown by the dotted line of the roller blind B2). In this way, the first roller blind B1 is operated to generate electricity when it is in the initial extended position or when the photovoltaic film is exposed to the light source 40, and when it is in the fully or more extended extended position (such as Fig. 10B When the first roller blind B1 is extended (shown), more shading capability can be provided to prevent light (and heat energy) from entering the building, with the added benefit of generating greater power through the power generated by the photovoltaic film on a portion of the second roller blind B2, in addition to the power generated by the photovoltaic film of the first roller blind B1 exposed to the light source 40. Some power can be generated by having the second roller blind B2 have a tail or foot in a position that is predetermined to be exposed to generate power, while allowing some light to pass through the building. However, if a greater shading effect is desired, or more power generation is required, the first roller blind B1 can be extended (lowered) to expose more of the photovoltaic film, and doing so increases the shading effect and increases power generation.

[0219] Another advantage of using a photovoltaic film incorporated into a roller blind is that the back side (i.e., the non-incident light side) of the solar cell is composed of a back reflector, which is usually located behind the solar active material and is usually made of a layer of deposited silver or aluminum or other suitable reflective material, and it acts as a reflector to reflect energy back to the outside (i.e., reflect toward the light source or energy source). This energy is electromagnetic energy or infrared energy. The energy that the solar cell (i.e., the photovoltaic film) cannot convert into electricity will be reflected toward the light source, such as through window glass and buildings. This is particularly beneficial in warm climates to further reflect heat energy, helping to reduce the solar heat gain of buildings.

[0220] The roller blind system can also be composed of a shell of a curtain box or curtain box type covering (or shell) 50 as the system. Such a shell or shell 50 is as described above and can accommodate multiple curtains, such as a first roller blind B1 and a second roller blind B2. The shell or shell is advantageously as described above, for example, including one or more holes, a light 70 and a sensor 80.

[0221] The roller blind system can be a double (two) curtain configuration. The first roller blind B1 can be composed of a photovoltaic film 30, or a portion P of the first roller blind can be composed of a photovoltaic film 30, or the first roller blind can have no photovoltaic film at all (for example, can be composed entirely of a light-shielding material S).

[0222] The second roll-up blind B2 may consist of the photovoltaic film 30 , or a portion P of the second roll-up blind may consist of the photovoltaic film 30 .

[0223] Figure 5A double curtain configuration is shown with a first roller blind B1 and a second roller blind B2, which are housed in a housing 50. The housing 50 is as described in item 5 in the above embodiment and includes a light 70 and a sensor 80. The first roller blind B1, the second roller blind B2 may have a width 60 and a total extended length L. A bracket 90 may be provided for fixing such a housing in place. Figure 6 Shown in more detail Figure 5 , and shows a second rolling curtain B2 as a light-shielding curtain material S, wherein the first rolling curtain B1 is composed of a photovoltaic film 30 . Figure 7 Another alternative configuration is shown, in which a portion P of the second roller blind B2 is composed of a photovoltaic film 30, wherein the remainder of the second roller blind B2 is a blackout curtain material S, and the first roller blind B1 has a photovoltaic film portion 30 that is suspended outside, exposing a predetermined length portion, and can be used to generate electricity.

[0224] Figure 8 Multiple modules of a rolling shade system configured as a double shade system are shown.

[0225] The photovoltaic film of both the first roller blind or the second roller blind, or the photovoltaic film of a part of the first roller blind or the photovoltaic film of a part of the second roller blind can be substantially the tail or foot of both the first roller blind and / or the second roller blind, and the photovoltaic film can extend substantially over the width of the roller blind (partially or substantially completely over the width), or alternatively or additionally, the photovoltaic film can extend substantially along the length of the roller blind (partially or substantially completely along the length).

[0226] The second roller blind may be a substantially blackout type roller blind, or may be substantially free of photovoltaic film.

[0227] A portion or portions of the second roller blind (e.g., segmented portions or sections that may optionally be separated from one another) may consist of a photovoltaic film. Optionally, in the case where a portion or portions of the extended length of the second roller blind consist of a photovoltaic film, the remainder of the extended length of the second roller blind may be free of a photovoltaic film and may be a blackout type blind material.

[0228] The portion of the second roll-up blind consisting of the photovoltaic film may be the tail or foot (ie the bottom or lower portion) of the second roll-up blind.

[0229] The portion of the second roll-up curtain consisting of the photovoltaic film may be about 95% or less of the stretched length of the second roll-up curtain, or may be about 90% or less of the stretched length of the second roll-up curtain, or may be about 80% or less, or may be about 75% or less, or may be about 70% or less, or may be about 60% or less, or may be about 50% or less, or may be about 40% or less, or may be about 30% or less, or may be about 25% or less, or may be about 20% or less, or may be about 15% or less, or may be about 10% or less, or may be about 5% or less.

[0230] The first roller blind may consist of a photovoltaic film.

[0231] A portion or portions of the first roller blind (eg segmented portions or sections which may optionally be separated from one another) may consist of a photovoltaic film.

[0232] The portion of the first roller blind consisting of the photovoltaic film may be about 100% or less of the stretched length of the first roller blind, or may be about 95% or less of the stretched length of the first roller blind, or may be about 90% or less, or may be about 80% or less, or may be about 75% or less, or may be about 70% or less, or may be about 60% or less, or may be about 50% or less, or may be about 40% or less, or may be about 30% or less, or may be about 25% or less, or may be about 20% or less, or may be about 15% or less, or may be about 10% or less, or may be about 5% or less.

[0233] In this system, in the extended length of the second roller blind, the second roller blind may include at least a portion consisting of a photovoltaic film and at least another portion of a shading material (for example, there may be no photovoltaic film), and in the extended length of the first roller blind, the extended length of the first roller blind may be essentially composed of a photovoltaic film.

[0234] The second roll-up blind may consist of a portion comprising a photovoltaic film and the remainder of the extended length consisting of a light blocking material (without the photovoltaic film), and the first roll-up blind consisting essentially of the photovoltaic film.

[0235] The first roller blind may be configured in the manner defined in the roller blind system in the first aspect and / or the second aspect.

[0236] The second roller blind may be configured in the manner defined in the roller blind system in the first aspect and / or the second aspect.

[0237] The system as described above, wherein the first roller blind and the second roller blind may be configured in a single housing or casing as defined in the first aspect and / or the second aspect.

[0238] Where in the foregoing description reference is made to integers or components having known equivalents thereof, these integers are herein incorporated as if individually set forth.

[0239] Although the present disclosure has been described in terms of certain embodiments, other embodiments that are apparent to those of ordinary skill in the art are also within the scope of the present disclosure. Therefore, various changes and modifications may be made without departing from the spirit and scope of the present disclosure. For example, various components may be repositioned as needed. In addition, not all features, aspects, and advantages are necessary to practice the present disclosure. Therefore, the scope of the present disclosure is limited only by the appended claims.

Claims

1. A rolling curtain system, comprising: a roller blind, the roller blind consisting of a photovoltaic film, the photovoltaic film being arranged to face the outside of the building envelope when in use, an energy storage system capable of receiving energy generated by the photovoltaic film, a motor, which can be connected via a drive system to wind up the roller blind, which is to be wound into an advanced position or a retracted position, A controller is configured to operate at least the motor to roll the roller blind forward or retract to a desired extended position.

2. The system according to claim 1, characterized in that The photovoltaic film is a substantially flexible film.

3. The system according to claim 1 or 2, characterized in that: The roll-up blind and the photovoltaic film are attached or connected to each other.

4. The system according to any one of claims 1 to 3, characterized in that The roll-up blind and the photovoltaic film are laminated together, or bonded or adhered to each other, or sewn or sewed to each other.

5. The system according to any one of claims 1 to 4, characterized in that The photovoltaic film extends substantially in one or both of the following ways: extends across the width of the roller blind, or can extend partially across the width of the roller blind, partially or substantially completely across the width, or the photovoltaic film can extend substantially along the length of the roller blind, partially or substantially completely along the length.

6. The system according to any one of claims 1 to 5, characterized in that The interior-facing side of the photovoltaic film includes a decorative or non-decorative decoration.

7. The system according to any one of claims 1 to 6, characterized in that The decorative or non-decorative decoration is a printed layer or a laminated layer or a layer of material otherwise attached to the interior facing side of the photovoltaic film.

8. The system according to any one of claims 1 to 7, characterized in that The inner-facing side of the roller blind comprises a colored layer, a non-colored layer or a colored layer.

9. The system according to any one of claims 1 to 8, characterized in that The photovoltaic film is composed of a decorative layer or a non-decorative layer as a photovoltaic film layer, or is composed of a colored layer, a non-colored layer or a colored layer as a photovoltaic film layer.

10. The system according to any one of claims 1 to 9, characterized in that The energy storage system comprises one or more batteries, optionally with sufficient capacity to store all the energy generated by the photovoltaic film per day.

11. The system according to any one of claims 1 to 10, characterized in that The system is provided in a ready-to-use configuration, wherein the energy storage system is factory installed with at least a minimum charge for initial operation or initial configuration on site or with immediate use capability.

12. The system according to any one of claims 1 to 11, characterized in that The system is provided in a pre-assembled or ready-to-use configuration for field installation.

13. The system according to claim 12, characterized in that The energy storage system is provided in a disconnected state, awaiting final installation on site.

14. A system according to any one of claims 1 to 13, the system also includes a charging port to provide charging to the onboard energy storage system, or alternatively, the charging port is configured to extract power from the energy storage system (for example, in emergency use or as remote charging of a device function).

15. The system according to claim 14, characterized in that The charging port is a Universal Serial Bus (USB) port, or other electrical port configuration configured to receive or provide power and / or a data link.

16. The system according to any one of claims 1 to 15, characterized in that The system is electrically independent of a building power source or a building wiring system, or is electrically connected or connectable to a building power source or a building wiring system to enable operation of one or more lights in the event that the energy storage system is not sufficiently charged.

17. A system according to any one of claims 1 to 16, further comprising a housing as a box or cassette covering of the system.

18. The system of any one of claims 1 to 17, further comprising one or more lamps.

19. The system according to claim 18, characterized in that The one or more lights are arranged to assist in illuminating the room or space in which the system is installed.

20. The system according to claim 18 or 19, characterized in that The one or more lights are disposed around or within the housing.

21. A system according to any one of claims 18 to 20, characterized in that The housing includes one or more apertures through which the light from the one or more lamps is projected or directed.

22. A system according to any one of claims 18 to 21, characterised in that A diffuser is arranged on the surface of the one or more lamps or on the surface of the one or more holes to diffuse the light.

23. A system according to any one of claims 18 to 22, characterised in that The controller regulates the brightness or luminous flux (or lumens) emitted by the one or more lamps.

24. A system according to any one of claims 18 to 23, characterised in that Light provided by the one or more lamps is projected or directed throughout the room / space.

25. A system according to any one of claims 18 to 24, characterised in that A side surface or an end surface of the housing includes the one or more lamps.

26. A system according to any one of claims 18 to 25, characterised in that At least one of the one or more lamps is arranged to project or direct light upwardly towards a ceiling of a room / space in which the system is to be installed.

27. A system according to any one of claims 18 to 26, characterised in that At least one of the one or more lamps is disposed on an interior-facing side of the housing (ie, facing in the direction of an interior room / space).

28. A system according to any one of claims 18 to 27, characterised in that The interior-facing side surface of the housing is angled such that a top edge of the housing extends horizontally beyond a lower edge of the housing.

29. The system according to any one of claims 18 to 28, characterized in that The lamp is provided with a reflector in front of which the lamp is positioned; optionally, a diffuser in front of which the lamp is positioned, and optionally, such arrangement of the reflector and the lamp is provided in a housing or in a main body of a cassette device.

30. The system according to any one of claims 1 to 29, characterized in that The system includes one or more sensors for measuring and / or detecting one or more room conditions.

31. The system according to claim 30, characterized in that The one or more room conditions are one or more of: motion or activity within the room / space (e.g., occupancy), light levels within the room / space (e.g., ambient flux levels within the room / space), external ambient light levels, a combination of room / space and external light levels, temperature of the room / space, a timer schedule based on time of day or day of week, manual signal input from a user, gestures from a user (e.g., macro or micro physical gestures from a user), voice or other audible sounds from a user (e.g., direct or indirect voice or audible sound activation or control or command via one or more devices capable of measuring or detecting such sounds).

32. The system according to any one of claims 1 to 18, characterized in that The controller operates to adjust one or more of the following: - the motor adjusts the roller blind or curtain to a desired extended position according to one or more of the room conditions, such as reduced light levels in the room / space or reduced incoming external light (e.g. sunlight as a light source), - Light output levels responsive to ambient light conditions (e.g. light output can be stepped up or down as required, or provision can be made for a slow or soft start or a slow or soft end to turning the one or more lights on or off).

33. The system according to claim 32, characterized in that The controller operates to make adjustments based on measured or sensed room conditions.

34. The system according to claim 33, characterized in that The room conditions are measured or sensed by one or more sensors integrated with the system or as part of the housing.

35. The system according to claim 33 or 34, characterized in that The room conditions are measured or sensed by one or more sensors remotely disposed around the room / space, and signals are fed back to the controller (eg, the one or more remote sensors are capable of communicating with the controller via a wired or wireless communication link).

36. A system according to any one of claims 1 to 35, characterized in that Manual input from a user is a signal sent to / received by a sensor or the controller to manually provide a desired extended position of the roller blind.

37. A system according to any one of claims 1 to 36, characterized in that The user manually sets or adjusts the preferred light level in a room or the temperature of a room from default settings, or manually sets or adjusts the preferred light level in a room or the temperature of a room based on the amount or level of motion or activity in the room over a period of time, or adjusts a predetermined timer schedule or other automatic adjustment based on measured or detected room / space conditions.

38. A system according to any one of claims 1 to 37, characterized in that Signals from the user for manual settings or adjustments will be communicated via a data communication link or network protocol via wired or wireless communications or a network or a combination thereof (examples include but are not limited to: NFC, wi-fi, Bluetooth, LTE, Zigbee communication links or network protocol enabled systems).

39. The system according to any one of claims 1 to 38, characterized in that Manual adjustment is performed via a switch on a control panel or housing or other relevant controller of the system (eg, it can have an on / off switch).

40. The system according to any one of claims 1 to 39, characterized in that The roller shade system is provided as a single unit, and the roller shade system is configured to be fastened or fixed in place (e.g., the system can be fastened or fixed in place to cover (partially or substantially all of) a window or other sunlight-transmitting medium, including but not limited to one or more of the following: glass, polymer, composite material).

41. A system according to any one of claims 1 to 40, characterized in that The system is configured as a single module or multiple modules (optionally, one or more modules are directly or indirectly connectable or connectable to one or more other modules), and the modules are factory pre-assembled or can be assembled on site.

42. The system according to claim 41, characterized in that The system is provided as a single module without requiring additional field assembly or other connections, or as a single complete unit in a ready-to-ship or ready-to-install configuration.

43. A system according to any one of claims 1 to 42, characterized in that The system is operable independently of or independently of a building's power or electricity supply, and optionally the system is connected or connectable to the building's power or electricity supply as a backup power source.

44. A system according to any one of claims 1 to 43, characterized in that The system communicates or is arranged to be in communication with a building management system (BMS).

45. The system according to claim 44, characterized in that The system can be operated or controlled via a BMS.

46. ​​A system according to any one of claims 1 to 45, characterized in that In use or in the installed configuration, the curtain is rolled into a configuration such that a portion of the photovoltaic film remains exposed.

47. A system according to any one of claims 1 to 46, characterized in that Even in the fully or completely retracted shade position or the fully rolled up or rolled up position, a portion of the photovoltaic film remains exposed to face outside of the building envelope during use.

48. A system according to any one of claims 1 to 47, characterised in that In use, a predetermined length portion of the roll-up blind comprising the photovoltaic film remains exposed (eg, for generating photovoltaic energy and / or for capture by the energy storage system).

49. The system according to any one of claims 1 to 48, characterized in that In use, a predetermined length portion of the roll-up blind including the photovoltaic film is maintained advanced from a fully or completely retracted position (eg, for generating photovoltaic energy and / or capture by the energy storage system).

50. The system according to any one of claims 1 to 49, characterized in that The system is pre-programmed to roll up the roller shade or screen to a predetermined extended length or position (eg, to an advanced or retracted position) upon initial setup.

51. The system according to any one of claims 1 to 50, characterized in that The maximum retracted position of the curtain when in use provides a predetermined minimum extended length for a minimum amount of power generation or charging substantially sufficient to enable use by the system (eg, to be retained by the energy storage system).

52. The system according to any one of claims 1 to 51, characterized in that Once installed or in the use configuration or in the fully rolled up or rolled up position, a portion of the curtain remains exposed to provide trickle charging capability.

53. The system according to any one of claims 1 to 52, characterized in that The minimum exposed surface area of ​​the photovoltaic film that remains exposed is self-adjusted based on the minimum required trickle charge or minimum stored power requirement of the energy storage system.

54. A system according to any one of claims 1 to 53, characterized in that The energy storage system is a battery or other electrical energy storage device.

55. The system according to any one of claims 1 to 54, characterized in that Data regarding one or more sensed room conditions is provided to a building management system (BMS) or other control system.

56. The system according to any one of claims 1 to 55, characterized in that Multiple systems are provided, and two or more of the systems operate substantially based on retracted or advanced shade lengths or positions (or extended lengths) or operate based on substantially matching shade positions.

57. The system according to any one of claims 1 to 56, characterized in that The photovoltaic film covers or obscures substantially all or substantially a portion of the surface area of ​​the curtain (eg, to allow some light to pass through the curtain).

58. The system according to any one of claims 1 to 57, characterized in that The photovoltaic film is arranged in a pattern on the curtain (eg, a series of stripes, either angled or substantially vertical or substantially horizontally, with reference to the up-and-down directionality of the curtain as it moves between its retracted and advanced positions).

59. The system according to any one of claims 1 to 58, characterized in that At least the bottom or lower portion of the curtain, also referred to as the tail or foot, is comprised of a photovoltaic film (e.g., when the curtain is unrolled or advanced from a retracted position, at least the first portion of the curtain that advances from a fully or completely retracted curtain position or in a fully rolled up or rolled up position can be comprised of a photovoltaic film, and a portion of the curtain, such as a portion of the curtain that can more often remain in a substantially rolled up or unused or retracted position when in use, can be free of a photovoltaic film).

60. A rolling curtain system, comprising: a roller blind, the roller blind consisting of a photovoltaic film, the photovoltaic film being arranged to face the outside of the building envelope when in use, an energy storage system capable of receiving electricity generated by the photovoltaic film, a motor connectable via a drive system to wind up the roller blind, which is to be wound into an advanced or retracted position, a controller configured to operate at least the motor to cause the roller blind to be rolled forward or retracted to a desired extended position, Wherein, when in use, a predetermined length portion of the roller blind consisting of the photovoltaic film remains exposed.

61. The system according to claim 60, characterized in that The predetermined length portion of the roll-up blind comprised of photovoltaic film that remains exposed is the minimum surface area of ​​photovoltaic film that is substantially sufficient for minimum operation of the system (or, for example, for at least minimum photovoltaic energy generation and capture or charging by the energy storage system).

62. The system of claim 60 or 61, further comprising any one or more systems according to any one or more of claims 1 to 59.

63. A rolling curtain system, comprising: a roller blind, the roller blind consisting of a photovoltaic film, the photovoltaic film being arranged to face the outside of the building envelope when in use, an energy storage system capable of receiving electricity generated by the photovoltaic film, a motor connectable via a drive system to wind up the roller blind, which is to be wound into an advanced or retracted position, a controller configured to operate at least the motor to cause the roller blind to be rolled forward or retracted to a desired extended position, and One or more lights to be powered by the energy storage system.

64. The system of claim 63, further comprising any one or more systems according to any one or more of claims 1 to 62.

65. System comprising one or more roller blind systems according to any one of claims 1 to 64, wherein: The one or more roller blind systems can be electrically connected to a motorized blind system or one or more roller blind systems.

66. The system according to claim 65, characterized in that The roller blind system according to any one of claims 1 to 64 provides power to another (electrically connected) motorized roller blind.

67. A rolling curtain system, comprising: at least one first roller blind and at least one second roller blind, the at least one first roller blind and the at least one second roller blind being mounted in a substantially parallel configuration and arranged in such a way that, in use, the first roller blind will be positioned relatively more outwards, or towards the light source, than the second roller blind, and the second roller blind will be positioned relatively more inwards, or further away from the light source, than the first roller blind, wherein at least one of the at least one first roller blind or the at least one second roller blind, or both the at least one first roller blind and the at least one second roller blind, consists of a photovoltaic film, which is configured to face a light source (e.g., outside of a building envelope) when in use, and wherein each of the at least one first roller blind and the at least one second roller blind is capable of operating independently, an energy storage system capable of receiving electricity generated by the photovoltaic film, a motor, which can be connected via the drive system, for winding each of the at least one first roller blind and / or the at least one second roller blind, each of the first roller blind and / or the second roller blind being to be wound into an advanced or retracted position, and A controller is configured to operate at least the motor for causing each of the at least one first roller blind and / or the at least one second roller blind to be rolled forward or retracted to a desired extended position.

68. The system according to claim 67, characterized in that In use, a predetermined length portion of at least one of the roll-up blinds consisting of the photovoltaic film remains exposed to a light source.

69. The system according to claim 67 or 68, characterized in that The roller blind system also consists of a housing which is a box or cassette covering (or housing) of the system.

70. The system according to any one of claims 67 to 69, characterized in that The roller blind system is a double (two) blind configuration.

71. The system according to any one of claims 67 to 70, characterized in that The at least one first roll-up blind consists of a photovoltaic film, or a portion of the first roll-up blind consists of a photovoltaic film.

72. The system according to any one of claims 67 to 71, characterized in that The at least one second roll-up blind consists of a photovoltaic film, or a portion of the second roll-up blind consists of a photovoltaic film, or the second roll-up blind is completely free of a photovoltaic film.

73. The system according to any one of claims 67 to 72, characterized in that The photovoltaic film of the first roller blind or the photovoltaic film of the second roller blind, or the photovoltaic film of a part of the first roller blind or the photovoltaic film of a part of the second roller blind is substantially the tail or foot of the first roller blind and / or the tail or foot of the second roller blind, and the photovoltaic film optionally extends substantially over the width of the roller blind, partially or substantially completely over the width, or alternatively or additionally, the photovoltaic film optionally extends substantially along the length of the roller blind, partially or substantially completely along the length.

74. A system according to any one of claims 67 to 73, characterized in that The second roller blind is essentially a blackout roller blind.

75. The system according to any one of claims 67 to 74, characterized in that The second roll-up blind is substantially free of photovoltaic film.

76. The system according to any one of claims 67 to 75, characterized in that A portion or multiple portions of the second roller blind (for example, segmented portions or sections that can be optionally separated from each other) are composed of a photovoltaic film, or optionally, when a portion or multiple portions of the extended length of the second roller blind are composed of a photovoltaic film, the remaining portion of the extended length of the second roller blind is free of photovoltaic film and is optionally a blackout curtain material.

77. The system according to any one of claims 67 to 76, characterized in that The portion of the second roll-up blind consisting of a photovoltaic film is the tail or foot of the second roll-up blind.

78. The system according to any one of claims 67 to 77, characterized in that The portion of the second roll-up blind consisting of the photovoltaic film is about 95% or less of the stretched length of the first roll-up blind, or about 90% or less, or about 80% or less, or about 75% or less, or about 70% or less, or about 60% or less, or about 50% or less, or about 40% or less, or about 30% or less, or about 25% or less, or about 20% or less, or about 15% or less, or about 10% or less, or about 5% or less of the stretched length of the first roll-up blind.

79. The system according to any one of claims 67 to 78, characterized in that The first rolling blind is composed of a photovoltaic film.

80. The system according to any one of claims 67 to 79, characterized in that A portion or a plurality of portions of the first roller blind, such as segmented portions or sections which are optionally separated from one another, consist of a photovoltaic film.

81. The system according to any one of claims 67 to 80, characterized in that The portion of the first roll-up blind consisting of the photovoltaic film is about 100% or less of the stretched length of the second roll-up blind, or about 95% or less, or about 90% or less, or about 80% or less, or about 75% or less, or about 70% or less, or about 60% or less, or about 50% or less, or about 40% or less, or about 30% or less, or about 25% or less, or about 20% or less, or about 15% or less, or about 10% or less, or about 5% or less of the stretched length of the first roll-up blind.

82. The system according to any one of claims 67 to 81, characterized in that In the extended length of the second roller blind, the second roller blind includes at least a portion consisting of a photovoltaic film and at least another portion consisting of a shading material (for example, optionally without a photovoltaic film), and wherein, in the extended length of the first roller blind, the extended length of the first roller blind is essentially composed of the photovoltaic film.

83. The system according to any one of claims 67 to 82, characterized in that The second roll-up blind consists of a portion comprising a photovoltaic film and the remainder of the extended length consists of a light blocking material (optionally without a photovoltaic film), and the first roll-up blind consists essentially of a photovoltaic film.

84. The system according to any one of claims 67 to 83, characterized in that The first roller blind is configured according to the system of any one of claims 1 to 66.

85. The system of any one of claims 67 to 83, wherein: The second roller blind is configured according to the system of any one of claims 1 to 66.

86. The system of any one of claims 67 to 85, wherein: The first roller blind and the second roller blind are arranged in a single housing or casing according to the system of any one of claims 1 to 66.

87. The system according to any one of claims 1 to 86, characterized in that When the photovoltaic film is provided as part of a roll-up blind, the photovoltaic film consists of a front side or face side that initially receives light or energy from a light or energy source and a rear side or back side that includes a reflector for reflecting the received energy (e.g., energy from a light or energy source).

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