Display assembly for an elevator and elevator system

Abstract

A display component for an elevator is provide, including: a display component provided with display content; a frosted glass which is electrically controllable, disposed on one side of the display component with the display content, wherein the frosted glass includes a changeable area which is configured to be electrically controlled to change its transparency, and a projection of the changeable area on the display component overlaps with the display content, the changeable area configured to be in a transparent state when a first control voltage is applied and to be in an opaque state when a second control voltage is applied; a controller, electrically connectable to the frosted glass, configured to receive user-input control signals and / or elevator status signals, and generate control voltages according to the control signals and / or elevator status signals to control the changeable area of the frosted glass, so as to display or obscure the display content on the display component.

Description

[0001] DISPLAY ASSEMBLY FOR AN ELEVATOR AND ELEVATOR SYSTEM

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of elevators, in particular to a display assembly for an elevator and elevator system.

[0004] BACKGROUND

[0005] In general, elevator systems are provided with a car and an operating panel. The operating panel may be used to display a status of the car and receive control signals inputted by users, thereby displaying and controlling the status of the car in the elevator system. Traditional display assemblies provide limited information and may not have rich pattern changes according to user-input control signals and elevator status signals. However, an elevator system employing liquid crystal display technology or organic light-emitting display technology would have increased manufacturing costs. In addition, widespread use of liquid crystal display technology would consume high energy.

[0006] SUMMARY

[0007] Some embodiments of the present disclosure provide a display assembly for an elevator and an elevator system, which may have rich display content according to a user-input control signal and an elevator status signal, while also have advantages of simple structure, low manufacturing costs, and low energy consumption.

[0008] One aspect of the present disclosure provides a display assembly for an elevator, including but not limited to: a display component provided with a display content; a frosted glass which is electrically controllable, disposed on one side of the display component with the display content, wherein the frosted glass includes a changeable area which is configured to be electrically controlled to change its transparency, and a projection of the changeable area on the display component overlaps with the display content, and the changeable area is configured to be in a transparent state when a first control voltage is applied and to be in an opaque state when a second control voltage is applied; a controller, which is electrically connectable to the frosted glass, and configured to receive a user-input control signal and / or an elevator status signal and generate a control voltage according to the user-input control signal and / or the elevator status signal to control the changeable area of the frosted glass to display or obscure the display content on the display component.

[0009] In some embodiments of the present disclosure, the display assembly is configured for being in a standby state, in which the changeable area of the frosted glass is entirely applied with the second control voltage to be in the opaque state.

[0010] In some embodiments of the present disclosure, the display assembly is configured for being in an active state, in which at least a part of the changeable area is applied with the first control voltage so that at least a part of the changeable area is in the transparent state.

[0011] In some embodiments of the present disclosure, the active state further includes a special state, in which the changeable area is applied with the first control voltage so that the changeable area is in the transparent state to display all the display content on the display component.

[0012] In some embodiments of the present disclosure, the changeable area includes multiple changeable sub-areas arranged according to a predetermined rule.

[0013] In some embodiments of the present disclosure, in the active state, the controller is configured to receive the user-input control signal and / or the elevator status signal, apply the first control voltage to a part of the multiple changeable sub-areas to control the part of the multiple changeable sub-areas to be in the transparent state, and apply the second control voltage to another part of the multiple changeable subareas to control the another part of the multiple changeable sub-areas to be in the opaque state, wherein the changeable sub-areas in the transparent state and / or the opaque state form a preset pattern.

[0014] In some embodiments of the present disclosure, the changeable area includes a first changeable sub-area and a second changeable sub-area.

[0015] In some embodiments of the present disclosure, the active state includes a first active state and a second active state; in the first active state, the first changeable sub-area is applied with the first control voltage, and the second changeable sub-area is applied with the second control voltage; in the second active state, the second changeable sub-area is applied with the first control voltage, and the first changeable sub-area is applied with the second control voltage; the controller is configured to receive the user- input control signal and / or the elevator status signal to control the display assembly to switch between the first active state and the second active state.

[0016] In some embodiments of the present disclosure, the first changeable sub-area surrounds the second changeable sub-area.

[0017] In some embodiments of the present disclosure, the first changeable sub-area and / or the second changeable sub-area form the preset pattern.

[0018] In some embodiments of the present disclosure, the display assembly further includes: a control signal input component, electrically connected to the controller, configured to send control signals to the controller in respond to user input.

[0019] In some embodiments of the present disclosure, the control signal input component includes a touch input component or a physical press input component.

[0020] In some embodiments of the present disclosure, the display component includes the display content formed by luminescent materials or non-luminescent materials.

[0021] In some embodiments of the present disclosure, the display assembly further includes an assembly frame, accommodating the display component, the frosted glass, and the controller.

[0022] Another aspect of the present disclosure provides an elevator system including a car; and the display assembly as described above.

[0023] In the display assembly for an elevator provided by embodiments of the present disclosure, the frosted glass is employed, the changeable area of the frosted glass is controlled by the controller that receives the user- input control signal and / or the elevator status signal, so as to display or obscure the display content on the display assembly, so that the display assembly may display multiple different patterns, while maintaining simple structures, low manufacturing costs, and low energy consumption.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reference to the accompanying drawings, the description of embodiments of the present disclosure, as well as its aforementioned and other purposes, features, and advantages, will become clearer, in the drawings:

[0026] Fig.l schematically illustrates an exploded structural diagram of a display assembly for an elevator according to one embodiment of the present disclosure;

[0027] Fig.2 schematically illustrates the display assembly of Fig.1 in the standby state;

[0028] Fig.3 schematically illustrates the display assembly of Fig.1 in one type of active state;

[0029] Fig.4 schematically illustrates the display assembly of Fig.l in another type of active state;

[0030] Fig.5 schematically illustrates the display assembly of Fig.1 in yet another type of active state;

[0031] Fig.6 schematically illustrates an exploded structural diagram of the display assembly for an elevator according to another embodiment of the present disclosure;

[0032] Fig.7 schematically illustrates the display assembly of Fig.6 in the standby state; Fig.8 schematically illustrates the display assembly of Fig.6 in the special state; Fig.9 schematically illustrates the display assembly of Fig.6 in one type of active state;

[0033] Fig.10 schematically illustrates an exploded structural diagram of the display assembly for an elevator according to one embodiment of the present disclosure in the standby state;

[0034] Fig.11 schematically illustrates the display assembly of Fig.10 in the special state; and

[0035] Fig.12 schematically illustrates the display assembly of Fig.10 in one type of active state.

[0036] DETAILED DESCRIPTION OF EMBODIMENTS

[0037] In the following, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary and not intended to limit the scope of the present disclosure. In the detailed description below, many specific details are provided to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may be implemented without these specific details. Additionally, descriptions of well- known structures and techniques are omitted herein to avoid unnecessarily obscuring the concepts of the present disclosure.

[0038] The terms used herein are merely descriptive of specific embodiments and are not intended to limit the present disclosure. The terms "include", "comprise", and the like indicate the presence of the features, steps, operations, and / or assemblies described, but do not exclude the presence or addition of one or more other features, steps, operations, or assemblies.

[0039] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used here should be interpreted as having meanings consistent with the context of the specification and should not be interpreted in an idealized or overly rigid manner.

[0040] In cases where expressions such as "at least one of A, B, and C, etc." are used, the expression should generally be interpreted as understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having only A, only B, only C, A and B, A and C, B and C, and / or A, B, and C).

[0041] Existing display assemblies for an elevator use single-color LEDs (such as red LEDs) to display the status of elevators. Additionally, specific symbols are provided on the control panel (such as buttons) of elevators, which are illuminated when triggered to display the triggered information. However, the existing types of display assemblies provide relatively limited content and may not be quickly adjusted after the product is completed and shipped from the factory. Additionally, if such display assemblies use color high-resolution LED display technology for display, although get rich pattern variations, but lead to increased manufacturing costs, and color high- resolution LED display devices consume high energy when displayed on a large scale.

[0042] In this regard, embodiments of the present disclosure provide a display assembly for an elevator, including but not limited to: a display component, which is provided with a display content; a frosted glass which is electrically controllable, disposed on one side of the display component on which the display content is provided, wherein the frosted glass includes a changeable area which is configured to be electrically controlled to change its transparency, and a projection of the changeable area on the display component overlaps with the display content, and the changeable area is configured to be in a transparent state when a first control voltage is applied and to be in an opaque state when a second control voltage is applied; a controller, which is electrically connectable to the frosted glass and configured to receive a user- input control signal and / or an elevator status signal, and generate a control voltage according to the user- input control signal and / or the elevator status signal to control the changeable area of the frosted glass to display or obscure the display content of the display component.

[0043] In the display assembly for an elevator provided by the embodiment of the present disclosure, the frosted glass is employed, and the controller receives the userinput control signal and / or the elevator status signal to control the changeable area of the frosted glass, so as to display or obscure the display content of the display assembly, so that the display assembly may display multiple different patterns, while maintaining simple structures and low manufacturing costs. Additionally, even if the display assembly displays in a large scale, it still possesses advantages of low energy consumption and rich display content.

[0044] The display assembly for an elevator provided by embodiments of the present disclosure may be applied in a car of an elevator system, for example, it may be disposed inside the car, serves as an elevator button to display the information when users press the button, and / or serves as an elevator control panel to display the working status of the elevator car, the floor information, advertisements, etc. Additionally, the display assembly may be applied in a building in which the elevator system is provided, and it is installed on different floors of the building and electrically connected to the elevator system.

[0045] Fig. 1 schematically illustrates an exploded structural diagram of the display assembly for an elevator according to one embodiment of the present disclosure.

[0046] As shown in Fig. 1, the display assembly 100 for an elevator according to an embodiment of the present disclosure includes an assembly frame 10, a controller 20, a display component 30, and a frosted glass 40 which is electrically controllable.

[0047] The assembly frame 10, for example, is provided as a cuboid structure. The assembly frame 10 has a frame bottom wall 11 and multiple frame side walls 12, which together form an accommodation space A for accommodating the controller 20, the display component 30, and the frosted glass 40, so as to install and fix the controller 20, the display component 30, and the frosted glass 40.

[0048] As shown in Fig. 1, in this embodiment, the assembly frame 10 includes two accommodation spaces A, wherein one accommodation space is located in the upper of the assembly frame 10 and the other one accommodation is located in the lower of the assembly frame 10. The display assembly 100 include one controller 20 to control the changeable area of the frosted glass of the display assembly 100. There are two display components 30 and two frosted glasses 40, which are respectively located in the upper and lower accommodation spaces of the assembly frame 10. The controller 20 may independently control the changeable areas of the two frosted glasses 40.

[0049] In some optional embodiments, one or more than two accommodation spaces are provided in the assembly frame, and the number of the accommodation spaces in the assembly frame may be adjusted according to actual design requirements. A plurality of the controllers may be provided, with each controller independently controlling the changeable area of each frosted glass.

[0050] As shown in Fig.l, in this embodiment, the display component 30 is provided with a display content, such as pre-designed patterns or text. For example, the display content on the display component 30 at the upper side of the assembly frame 10 may differ from that at the lower side of the assembly frame 10.

[0051] The frosted glass 40 is disposed on one side of the display component 30 on which the display content is provided, and the frosted glass includes the changeable area. A projection of the changeable area on the display component overlaps with the display content, and the changeable area is configured to be in a transparent state when a first control voltage is applied and to be in an opaque state when a second control voltage is applied.

[0052] In some optional embodiments, the number of display components may match the number of the frosted glasses. The display content on different display components may be the same or different, and the display content at different locations on the same display component may be the same or different. The display content on the display components may be adjusted according to actual design requirements. For example, the display content on the display components may include patterns of people or objects composed of a single color or multiple colors. The changeable area of the frosted glass in the embodiments of the present disclosure is in the transparent state or the opaque state when different control voltages are applied. When in the transparent state, viewers may see the unobstructed display content on the display component through the changeable area of the frosted glass; when in the opaque state, viewers may not see the obstructed display content on the display component.

[0053] In this embodiment, the first control voltage, for example, is a positive voltage, causing the changeable area to be in the transparent state when powered. The second control voltage, for example, is OV, causing the changeable area to be in the opaque state when unpowered.

[0054] In some optional embodiments, the control voltages for the transparent and opaque states of the changeable area of the frosted glass may be other voltage values, which are related to electrical stimulation of the material. The embodiments of the present disclosure do not specifically limit the control voltages of the frosted glass.

[0055] In the embodiments, by overlapping a projection of the changeable area on the display component with the display content, the changeable area of the frosted glass may be controlled to display or obscure the display content on the display component. Even if the display content on the display component is in a pre-set pattern, richer display effects may be achieved by obscuring different locations of the display content. For example, the display content on the display component may be obscured in a set obscuring sequence, as a result, a better attractive effect on viewers may be obtained.

[0056] In some embodiments, the display assembly 100 may be an advertising display board applied in the elevator car. For example, the display content on the display component may include advertising content composed of multiple comic strips. The changeable area of the frosted glass may be controlled to obscure and display the advertising content composed of multiple comic strips, so as to attract the attention of viewers, which is more attractive than displaying the entire content at once, thereby enhancing the promotional effectiveness of advertising.

[0057] In this embodiment, the controller 20 is electrically connectable to the frosted glass 40. By sending the control voltage from the controller 20 to the frosted glass 40, the changeable area of the frosted glass 40 is controlled. The control voltage is generated based on the user-input control signal and elevator status signal. The controller 20 is configured to receive user- input control signal and / or elevator status signal and generate control voltages according to the user-input control signal and / or the elevator status signal to control the changeable area of the frosted glass 40, so as to display or obscure the display content on the display component.

[0058] For example, the controller 20 may receive the user-input control signal, generate the control voltage according to the control signal, and control the changeable area of the frosted glass 40. Alternatively, the controller 20 may receive elevator status signals and generate the control voltage according to the elevator status signal to control the changeable area of the frosted glass 40. Furthermore, the controller 20 may receive both the user-input control signal and the elevator status signal and generate the control voltage according to the control signal and the elevator status signal to control the changeable area of the frosted glass 40. The controller may achieve control effects on the changeable area of the frosted glass 40 according to the different signals, thereby allowing the display assembly to display richer content.

[0059] In some embodiments, the changeable area of the frosted glass includes one or more areas, and the controller may control the one or more areas individually, thereby displaying or obscuring the display content at different locations of the display assembly.

[0060] As shown in Fig.1, in this embodiment, the display component 30 includes display components installed on the upper and lower of the assembly frame 10, with the display content on the upper and lower display components being different. The frosted glass 40 includes frosted glasses installed on the upper and lower of the assembly frame 10, with the shapes and sizes of the changeable areas of the upper and lower frosted glasses being different.

[0061] Fig.2 schematically illustrates the display assembly of Fig. 1 in the standby state. Fig.3 schematically illustrates the display assembly of Fig. 1 in one type of active state. Fig.4 schematically illustrates the display assembly of Fig.1 in another type of active state. Fig.5 schematically illustrates the display assembly of Fig.1 in yet another type of active state.

[0062] Below, the structure of the display assembly of an embodiment disclosed herein is described in detail in conjunction with Fig.2 to Fig.5. In this embodiment, as shown in Fig.2 to Fig.5, the display assembly 100 is configured for being multiple display states, including a standby state. When the elevator is out of service, the display state of the display assembly is in the standby state.

[0063] As shown in Fig.2, in the standby state of display assembly 100, the changeable areas of the frosted glass are entirely applied with the second control voltage to be in the opaque state. For example, the second control voltage is 0V, causing the changeable areas of the frosted glass 40 entirely to be in the powered-off state. At this time, the changeable area is in the opaque state, causing the display content on the display component on the frosted glass 40 to be invisible to viewers.

[0064] The display states of the display assembly 100 is configured for being an active state. When the elevator is in a running state, the display state of the display assembly is in the active state. As shown in Fig.3 to Fig.5, when in the active state of display assembly 100, at least a part of the changeable area of the frosted glass 40 is applied with the first control voltage so that at least a part of the changeable area of the frosted glass is in the transparent state.

[0065] For example, the first control voltage is greater than 0V. By powering a part of the changeable areas of the frosted glass 40, at least a part of the changeable areas is in the transparent state. The transparent changeable areas and the opaque changeable areas together form a pattern displaying the current state of the elevator, such as the floor number where the elevator car is located. Moreover, viewers may see the display content on the display component through the transparent changeable areas so that more contents of the display component may be displayed on the currentstate pattern that displays the current status of the elevator.

[0066] As shown in Fig.3 to Fig.5, the changeable areas of the frosted glass 40 include a first area DI located on the upper of the display assembly 100 and a second area D2 located on the lower of the display assembly 100. The first area DI is used to display the current status of the elevator, for example, including information such as the floor where the elevator car is located. The second area D2 is used to display the user-input control signal and the status of the user-input control signal, such as elevator up and down control buttons. Users input control signals by pressing or touching the control buttons.

[0067] In optional embodiments, the first and second areas may be used to display other content.

[0068] As shown in Fig.3 and Fig.4, the first area DI in the changeable area includes multiple changeable sub-areas Dll arranged according to preset rules. In this embodiment, multiple changeable sub-areas Dll are arranged in a " H " shape rule. In optional embodiments, each sub-area may be square, with multiple square changeable sub-areas arranged in an array.

[0069] In the active state, the elevator car moves between different floors. The controller 20 is configured to receive elevator status signals (e.g. the floor where the elevator car is located), and control a part of the multiple changeable sub-areas Dll to be in the transparent state, and control another part of the multiple changeable sub-areas Dll to be in the opaque state, so that the transparent changeable sub-areas and / or the opaque changeable sub-areas form a preset pattern, which may display the current status of the elevator, for example, display the floor where the elevator car is located, or display information that the elevator is in trouble.

[0070] In this embodiment, for example, if the elevator car is on the 4th floor, the controller 20 may be used to control a part of the multiple changeable sub-areas Dll to be in the transparent state and control another part of the multiple changeable subareas DI 1 to be in the opaque state, so that the transparent changeable sub-areas and the opaque changeable sub-areas in the first area DI of the changeable area form Pattern 4, thereby displaying the current status of the elevator, that is, displaying the floor where the elevator car is located. When the floor where the elevator car is located changes, the controller receives elevator status signals and changes the control voltages applied to the transparent changeable sub-areas and the opaque changeable sub-areas in the first area DI of the changeable area, causing the pattern to be changed accordingly. This enables real-time display of the current status of the elevator, and viewers may see the display content through the transparent changeable sub-areas, which has a richer display effect.

[0071] In the embodiment, the active state of the display assembly includes a first active state and a second active state. In the first active state, the first changeable sub-area is applied with the first control voltage, and the second changeable sub-area is applied with the second control voltage; in the second active state, the second changeable sub-area is applied with the first control voltage, and the first changeable sub-area is applied with the second control voltage. The controller is configured to receive the user- input control signal and / or the elevator status signal to control the display assembly to switch between the first active state and the second active state.

[0072] As shown in Fig.3 to Fig.5, in this embodiment, the first area DI further includes changeable sub-areas D12, and the changeable sub-areas D12 are disposed surround the changeable sub-areas Dll. Multiple changeable sub-areas Dll which are controlled by the controller to display preset patterns may serve as the first changeable sub-area of the changeable area, and the changeable sub-areas D12 may serve as the second changeable sub-area.

[0073] As shown in Fig.4, the first area DI of the display assembly is in the first active state, with the first sub-area applied with the first control voltage being in the transparent state and the second sub-area applied with the second control voltage being in the opaque state.

[0074] As shown in Fig.5, the first area DI of the display assembly is in the second active state, with the first sub-area applied with the second control voltage being in the opaque state and the second sub-area applied with the first control voltage being in the transparent state.

[0075] The controller, for example, controls the display assembly to switch between the first active state and the second active state when it receives status signals. For example, when the elevator car reaches the 4th floor, upon receiving the arrival status signal, the first area of the display assembly is controlled to switch between the first active state and the second active state to achieve a blinking reminder effect.

[0076] In some optional embodiments, multiple changeable sub-areas, for example, may also be arranged in a matrix format in both horizontal and vertical directions, thereby displaying more complex symbols or patterns to display richer content.

[0077] The changeable area further includes a second area D2, which is a keypad area and may be provided for one, two, or multiple areas. In this embodiment, as shown in Fig.3 to Fig.5, there are two second areas D2, each of which includes a first subarea D21 and a second sub-area D22, with the first sub-area D21 surrounding the second sub-area D22. The second sub-area D22 is provided in the shape of the elevator control signal, indicating the user control the elevator.

[0078] In another optional embodiment, the first and second sub-areas may be simultaneously controlled by the controller to be in the transparent state, displaying the display content on the display assembly located below the first and second subareas to achieve the preset display function or reminder function.

[0079] In this embodiment, for example, as shown in Fig.3, in the first active state, when the second sub-area D22 is applied with the first control voltage greater than OV, it is in the transparent state. Viewers may see the display content on the display assembly through the second sub-area D22, indicating that the user may input the elevator control signal (e.g., elevator up or elevator down). When the user operates the elevator up button on the second area D2 (e.g., by pressing or touching) and the second sub-area D22 is applied with a second control voltage of OV, it is in the opaque state to obscure the display content of the display assembly. And the first sub-area D21 applied with the first control voltage greater than OV is in the transparent state, to display the display content on the display assembly. In this case, as shown in Fig.4, the control signal input by the user has been received and displayed.

[0080] As shown in Fig.5, in this embodiment, for example, when the display assembly is disposed on the 4th floor and the user presses the button on the second area on the display assembly at the 4th floor, the elevator car moves to the 4th floor. Upon reaching the 4th floor, according to the elevator status signal and the control signal, the changeable areas of the first area DI and the second area D2 are controlled to blink alternately, so as to display an arrival state of the elevator. For example, the transparent changeable sub-areas and the opaque changeable sub-areas in the first area D 1 may be simultaneously controlled to blink alternately, and the opaque first sub-area D21 and the transparent second sub-area D22 may be simultaneously controlled to blink alternately, thereby displaying the arrival state of the elevator.

[0081] In optional embodiments, the arrival state may be displayed in other forms, such as synchronous blinking of the first area DI and the second area D2.

[0082] In some embodiments, the display assembly 100 further includes a control signal input component.

[0083] The control signal input component is disposed in the second area D2 and is electrically connected to the controller. The control signal input component is configured to send the control signal to the controller in respond to user input.

[0084] For example, the control signal input component may include a touch input component. Alternatively, the control signal input component may include a physical pressing input component. In some embodiments, the display assembly includes the display content formed by luminescent or non-luminescent materials.

[0085] For example, luminescent materials include self-luminous materials and electroluminescent materials.

[0086] Self-luminous materials, for example, emit light by absorbing energy and reemitting in a short period of time, such as fluorescent materials. Electroluminescent materials refer to materials that emit light by applying voltage or current to the material, such as organic light- emitting materials, semiconductor materials, etc. Non-luminescent materials, for example, may be display patterns drawn with paint of a certain color, which become visible through reflection after receiving external light sources.

[0087] In the embodiments, the active state of the display assembly further includes a special state. In the special state, the controller receives the user-input control signal and / or the elevator status signals to apply the first control voltage to the changeable area, and the changeable area is in the transparent state to display all the display content on the display assembly.

[0088] Fig.6 schematically illustrates an exploded structural diagram of the display assembly for an elevator according to another embodiment of the present disclosure. Fig.7 schematically illustrates the display assembly of Fig.6 in the standby state. Fig.8 schematically illustrates the display assembly of Fig.6 in the special state. Fig.9 schematically illustrates the display assembly of Fig.6 in one type of active state.

[0089] As shown in Fig.6 to Fig.9, the display assembly 200 of the elevator in this embodiment includes an assembly frame 10', a controller 20, a display component 30, and a frosted glass 40 which is electrically controllable.

[0090] As shown in Fig.7 and Fig.8, the frosted glass 40 is provided with a changeable area which is configured to be electrically controlled to change its transparency, including multiple changeable sub-areas Dll' arranged according to preset rules. The controller receives the user-input control signal and / or the elevator status signal, controls a part of the multiple changeable subareas D 11' to be in the transparent state, and another part to be in the opaque state, so that the transparent changeable subareas Dl l' and the opaque changeable sub-areas Dll' form a preset pattern, which may display elevator floor information, status information, etc.

[0091] As shown in Fig.9, the active state of the display assembly 200 further includes a special state. In the special state, the controller controls the changeable area to be in the transparent state to display all the display content on the display component 30.

[0092] Fig.10 schematically illustrates an exploded structural diagram of the display assembly for an elevator according to one embodiment of the present disclosure in the standby state. Fig.11 schematically illustrates the display assembly of Fig.10 in the special state. Fig.12 schematically illustrates the display assembly of Fig.10 in one type of active state.

[0093] The display assembly 300 shown in Fig.10 to Fig.12 has an electrically controlled glass 40. The electrically controlled glass 40 is provided with a changeable area which is configured to be electrically controlled to change its transparency, including a first changeable sub-area 41 and a second changeable subarea 42.

[0094] The first changeable sub-area 41 and the second changeable sub-area 42 form a preset pattern, such as an elevator up or down pattern, to indicate the user to input corresponding control commands for elevator operation.

[0095] In the first active state, the first changeable sub-area 41 is applied with a first control voltage to be in the transparent state to display the display content on the display component. The second changeable sub-area 42 is applied with a second control voltage to be in the opaque state.

[0096] When the user inputs a control signal and the controller receives the signal, the display assembly switches from the first active state to the second active state. In the second active state, the second changeable sub-area 42 is applied with the first control voltage to be in the transparent state, and the first changeable sub-area 41 is applied with the second control voltage to be in the opaque state to display successful input of control signal of the user.

[0097] For example, the second changeable sub-area is in the shape of a warning bell, surrounded by the first changeable sub-area. In the standby state of the display assembly, both the first changeable sub-area and second changeable area are applied with the second control voltage to be in the opaque state, preventing observation of the display content on the display component. In the first active state of the display assembly (e.g., non-emergency state), the controller applies the first control voltage to the second changeable sub-area to enable the second changeable sub-area to be in the transparent state. This allows the display content on the display component to be observed through the second changeable sub-area, while also allowing the observation of the warning bell pattern formed by the second changeable sub-area. When the controller receives a status signal indicating elevator malfunction or emergency, the display assembly switches from the first active state to the second active state (e.g., emergency state). In the second active state, the second changeable sub-area is applied with the second control voltage to be in the opaque state, while the first changeable sub-area is applied with the first control voltage to be in the transparent state. This allows the display content on the display component to be observed through the first changeable sub-area, so as to remind viewers of the emergency situation.

[0098] The display assembly in this embodiment employs the frosted glass, is controlled by a chip controller to receive the user input control signal and / or the elevator status signal to control the changeable areas of the frosted glass. This allows for the display or obscuring of the display content on the display component, so that the display assembly may show multiple different patterns. Additionally, the structure of the display assembly is simple, with low manufacturing costs and low energy consumption. The present disclosure also provides an elevator system including a car and the display assembly as described above. The display assembly may be disposed inside the car or as an assembly connected to the elevator system, used to display information about the elevator system.

[0099] It should be understood that the elevator system according to the embodiments of the present disclosure possesses all the features and advantages of the aforementioned display assembly, as specifically described above, and need not be reiterated here.

[0100] Those skilled in the art will appreciate that various features described in the embodiments and / or claims of the present disclosure may be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, various features described in the embodiments and / or claims of the present disclosure may be combined and / or combined in various ways. All such combinations and / or combinations fall within the scope of the present disclosure.

[0101] The embodiments of the present disclosure have been described above. However, these embodiments are provided for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although various embodiments have been described separately above, this does not mean that the measures in each embodiment may not be advantageously combined. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, all of which should fall within the scope of the present disclosure.

Claims

Claims:

1. A display assembly (100) for an elevator, comprising: a display component (30) provided with a display content; a frosted glass (40) which is electrically controllable, disposed on one side of the display component (30) on which the display content is provided, wherein the frosted glass (40) comprises a changeable area which is configured to be electrically controlled to change its transparency, and a projection of the changeable area on the display component (30) overlaps with the display content, and the changeable area is configured to be in a transparent state when a first control voltage is applied and to be in an opaque state when a second control voltage is applied; and a controller (20), which is electrically connectable to the frosted glass (40), and configured to receive a user-input control signal and / or an elevator status signal, and to generate a control voltage according to the user-input control signal and / or the elevator status signal to control the changeable area of the frosted glass (40) to display or obscure at least a part of the display content on the display component (30).

2. The display assembly (100) according to claim 1, wherein: the display assembly (100) is configured for being in a standby state, in which the changeable area is entirely applied with the second control voltage to be in the opaque state.

3. The display assembly (100) according to claim 2, wherein: the display assembly (100) is configured for being in an active state, in which at least a part of the changeable area is applied with the first control voltage so that at least a part of the changeable area is in the transparent state.

4. The display assembly (100) according to claim 3, wherein:the changeable area comprises multiple changeable sub-areas arranged according to a predetermined rule.

5. The display assembly (100) according to claim 4, wherein: in the active state, the controller (20) is configured to receive the user-input control signal and / or the elevator status signal, apply the first control voltage to a part of the multiple changeable sub-areas to control the part of the multiple changeable sub-areas to be in the transparent state, and apply the second control voltage to another part of the multiple changeable subareas to control another part of the multiple changeable sub-areas to be in the opaque state, wherein the changeable sub-areas in the transparent state and / or in the opaque state form a preset pattern.

6. The display assembly (100) according to claim 3 or 4, wherein: the changeable area comprises a first changeable sub-area (41) and a second changeable sub-area (42).

7. The display assembly (100) according to claim 6, wherein: the active state comprises a first active state and a second active state; in the first active state, the first changeable sub-area (41) is applied with the first control voltage, and the second changeable sub-area (42) is applied with the second control voltage; in the second active state, the second changeable sub-area (41) is applied with the first control voltage, and the first changeable sub-area (42) is applied with the second control voltage; and the controller (20) is configured to receive the user-input control signal and / or the elevator status signal to control the display assembly (100) to switch between thefirst active state and the second active state.

8. The display assembly (100) according to claim 7, wherein: the first changeable sub-area (41) surrounds the second changeable sub-area (42).

9. The display assembly (100) according to claim 7, wherein: the first changeable sub-area (41) and / or the second changeable sub-area (42) form a preset pattern.

10. The display assembly (100) according to claim 1, further comprising: a control signal input component, electrically connected to the controller (20), wherein the control signal input component is configured to send control signals to the controller (20) in respond to user input.

11. The display assembly (100) according to claim 10, wherein: the control signal input component comprises a touch input component or a physical press input component.

12. The display assembly (100) according to any one of claims 1 to 5, 7 to 11, wherein: the display component (30) further comprises the display content formed by luminescent materials or non-luminescent materials.

13. The display assembly (100) according to any one of claims 1 to 5, 7 to 11, further comprising: an assembly frame (10), wherein the assembly frame accommodates the display component (30), the frosted glass (40), and the controller (20).

14. An elevator system comprising: a car; and a display assembly (100) according to any one of claims 1 to 13.

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