EP4629219A1

EP4629219A1 - Sensor display with indication functionality

Info

Publication number: EP4629219A1
Application number: EP24167991.9A
Authority: EP
Inventors: Markus Künzli; Roger Kistler; Emanuel Wild; Cristiano Vizzotto de Menezes
Original assignee: Tridonic GmbH and Co KG
Current assignee: Tridonic GmbH and Co KG
Priority date: 2024-04-02
Filing date: 2024-04-02
Publication date: 2025-10-08
Also published as: WO2025209752A1

Abstract

A device and component of a system for displaying sensor information to a user, specifically from a luminaire system. The device comprises a display cap 100 for displaying sensor information to a user, the display cap 100 comprising a display cap body 110 which has a proximal end 111 and a distal end 112, wherein the proximal end 111 is configured to be inserted into or fixed onto an interface element 211; an optical receiver 120 for receiving light from a light emitting component from the proximal end 111; and a display surface 130 disposed at the distal end 112, which displays at least a symbol 131 representing a measurable environmental factor, wherein a portion of the display surface 130 is lit with the light received in the optical receiver 120. The system comprises a luminaire system 200 comprising a housing 210, the display cap 100, a controlling module 220, a sensing unit 230, and a controllable light source 240, wherein the sensing unit 230 is configured to measure a range of measurement levels of at least one environmental factor; wherein the housing 210 accommodates the interface element 211 which interfaces with the proximal end 111 of the display cap 100 to connect the display cap 100 to the housing 210, and a light guide 212, such as a fiber optic cable or an electrical cable, which either connects the optical receiver 120 of the display cap 100 to the controllable light source 240, or connects the controllable light source 150, 240 in the proximal end 111 of the display cap 100 to the controlling module 220; and wherein the controlling module 220 is configured to receive a signal from the sening unitr 230, and control an activation state of the controllable light source 240 based on the signal received from the sensing unit 230.

Description

The present invention is relevant to the field of modular building infrastructure systems.
Building infrastructure systems such as lighting systems, are often equipped with sensors, whether for single environmental factors or for a plurality, that are used for driving various functions. It is, for example, a common occurrence for a luminaire to have a passive infrared sensor (PIR) as a movement sensor that determines the activation state of the luminaire. It is also known in the art for luminaires to be equipped with sensors to detect hazard factors such as smoke or high temperatures.
Present luminaires, however, are often not designed with environmental factor display to a user without access to a control program of the luminaire system in mind, but rather are designed to react to said conditions via internal drivers and/or report said conditions to an external application.
It is thus an object of the present invention to provide a means of communicating selected environmental factors to a user with a modular and inexpensive solution that may be quickly implemented for new and potentially existing luminaire systems with minimal redesign thereof.
A first aspect of the present invention is a display cap for displaying sensor information to a user. The display cap comprises a display cap body which has a proximal end and a distal end, wherein the proximal end is configured to be inserted into or fixed onto an interface element; an optical receiver for receiving light from a light emitting component from the proximal end; and a display surface disposed at the distal end, which displays at least a symbol representing a measurable environmental factor, wherein a portion of the display surface is lit with the light received in the optical receiver.
This configuration provides a solution to displaying measured factors characterized by design simplicity, which results in both a high measure of production speed and cost-effectiveness.
In a preferred embodiment of the first aspect, the display cap further comprises an identifying element for identifying a display cap type based on the symbol displayed by the display surface. The identifying element is configured to interface with an identifying element reader located in the interface element.
This embodiment provides the advantage of a modular design that may be interchangeably used on a single receptacle to achieve different display goals. This is especially advantageous when there are multiple interfaces available, for example, a plurality of identical luminaires or luminaire system components that all possess or connect to a multi-factor sensor wherein each interface may carry a different display cap based on user needs.
In a preferred embodiment of the first aspect, the proximal end comprises a fixing means which comprises at least one fixing magnet, at least one flange configured to interface with the housing via securing means, and/or a threading or other mechanical fastening means. The at least one fixing magnet may, for example, be a ring of magnets or a single ring-shaped magnet for easily aligning the display cap with the interface component and the optical receiver with the light emitting component. The at least one flange may, for example, be a pair of flange wings with a pair of screw holes one each, wherein said screw holes may be aligned with holes on the interface component or housing. The threading may, for example, be a threading similar to that found on a bottle cap.
Each of the above is an example of a simple, easy to implement way to mount a display cap. In the case of caps being interchangeable on an interface, each cap may be provided with the same proximal end for both increased manufacturing efficiency and for greater modular applicability.
In a preferred embodiment of the first aspect, the display surface comprises a translucent area for diffusing the light received by the optical receiver to at least a part of the display surface. The translucent area may, for example, be the symbol or a high-visibility area such as a ring around the perimeter of the display surface.
This embodiment allows the display surface to be highly visible and allows for parts of the display surface to stand out in a helpful way (i.e. the symbol). Notably, the surface having a translucent area allows for a user to view the display surface more readily from multiple angles because the light therefrom is more uniformly scattered.
In a preferred embodiment of the first aspect, the distal end and/or the display surface comprises one or more through holes.
This embodiment allows gases and/or aerosols to pass through the cap in the case that it covers a sensor orifice.
In a preferable embodiment of the first aspect, the display cap further comprises a light source, preferably an LED.
This embodiment can allow for a more easily implementable design, as the light guide may be an electrical cable in this case, which is less sensitive to bending and can be less expensive. This is particularly relevant in cases wherein an existing design is modified to have an interface component for a display cap, since considerations may not have been made previously for allowing a light guide path in the form of a fiber optic cable to be present.
A second aspect of the present invention is a component of a building infrastructure system, preferably a luminaire or a sensor. The explanations given hereinafter mostly use the example of a lighting system but it is evident that such example is by no means limiting the present invention. The component comprises a housing, a display cap, a controlling module, a sensing unit, and a controllable light source. The sensing unit is configured to measure a range of measurement levels of at least one environmental factor. The display cap comprises a display cap body which has a proximal end and a distal end, wherein the proximal end is configured to be inserted into or fixed onto an interface element, an optical receiver for receiving light from a light emitting component from the proximal end, and a display surface disposed at the distal end, which displays at least a symbol representing a measurable environmental factor. A portion of the display surface is lit with the light received in the optical receiver. The housing accommodates the interface element which interfaces with the proximal end of the display cap to connect the display cap to the housing, and a light guide, such as a fiber optic cable or an electrical cable, which either connects the optical receiver of the display cap to the controllable light source, or connects the controllable light source in the proximal end of the display cap to the controlling module. The controlling module is configured to receive a signal from the sensing unit, and control an activation state of the controllable light source based on the signal received from the sensing unit.
This embodiment allows for a design to be modified relatively easily to display a sensor reading via a display cap. Such a design may be modified from an existing luminaire system with minor adjustments such that production processes do not require significant updating.
In a preferred embodiment of the second aspect, the display cap further comprises an identifying element for identifying a display cap type based on the symbol displayed by the display surface via at least one of: a mechanical component such as a specifically patterned topological surface, a reflective optically readable component such as a QR or bar code, an emissive optically readable component such as a frequency- or emissivity- or wavelength- tuned LED, an electrical circuit component such as a contact switch, and/or a magnetic component such as a specific pattern of magnets or a magnetic strip.
Furthermore, the interface element further comprises an identifying element reader that determines the display cap type of the display cap according to the identifying element thereon. The controlling module is configured to receive a signal from the identifying element reader, and control an activation state of the controllable light source further based on the signal received from the identifying element reader.
This allows the modularity to be increased by the cap determining which output is displayed based on what the user decides is most important. This is especially advantageous when there are multiple interfaces available, for example, a plurality of identical luminaires, sensors or luminaire system modules that all possess or connect to a multi-factor sensing unit wherein each interface may carry a different display cap based on user needs.
In a preferred embodiment of the second aspect, the display cap comprises a standardized design such that a display cap representing one environmental factor may be exchanged for a display cap representing a different environmental factor. Following this, the identifying element reader is configured to recognize a plurality of display cap types based on a plurality of environmental factors.
This increases modularity and solidifies the possibility for multi-sensor luminaires to be manufactured with the same identity reader element such that several luminaires can display a plurality of factors.
In a preferred embodiment of the second aspect, the interface element is a modular device selectively fixable to or in the housing.
In a preferred embodiment of the second aspect and according to the above embodiment, the modular device is configured to be fixedly accommodated in place of, into, or onto an existing module of the luminaire system.
The above two embodiments have the advantageous effect of decreasing the barrier to modular capability of the luminaire system, given that the module might be applicable in place of or onto other parts with minimal technical effort.
In a preferred embodiment of the second aspect and according to one of the above two embodiments, the modular device is configured to accommodate at least a part of the light guide.
The modular device accommodating a part or the entire light guide allows for fewer components or at least less space needed for those components being required to be added into the main housing of the luminaire.
In a preferred embodiment, the controllable light source is configured such that the activation state includes emitting one of a plurality of colors.
Furthermore, each of the plurality of colors represents a part of the range of measurement levels measured by the sensing unit.
Utilizing a plurality of colors for data indication promotes of simplicity the display cap by allowing it to have display that does not require any dynamic components, since the lighting state is determined by the controllable light source. In essence, this means that the display cap does not require something like an LCD for displaying specific numbers or other measurement qualia.
In a preferred embodiment, the plurality of colors is a color scale. Colors towards a first end of the scale may be set to represent normal values, and colors towards a second end of the scale may be set to represent elevated or potentially hazardous values. The color scale is more preferred to be a temperature scale with green or blue at the first end and red at the second end. The color scale may instead, for example, be a monochromatic scale of intensity, or the color scale may be a combination of intensity and chromatic scales.
Further advantageous beyond the display cap retaining simplicity, a color scale is an easy-to-in-tuit way to determine the state of the measurement in question. Furthermore, if the color scale is mixed with an intensity scale, the dependence on color is not as strong, which is more accessible to users who are, for example, colorblind.
In a preferred embodiment, the at least one environmental factor may comprise an ambient pressure, a partial pressure of a gas such as carbon dioxide, a concentration of an aerosol such as smoke, a concentration or relative measurement of humidity, a temperature of the ambient conditions or the luminaire itself, a type of radiation such as visible light or infrared light, and/or a type of vibration.
Embodiments of the present invention will be described in greater detail below with reference to the attached drawings, which show:

Fig. 1 - a basic embodiment of the cap
Fig. 2 - a preferred embodiment with identifying element
Fig. 3 - a preferred embodiment with symbol, ring, LED
Fig. 4 - a basic embodiment of the system
Fig. 5 - a preferred embodiment with identifying element
Fig 6 - a preferred embodiment with modular interface element

Specific terms are used in the figures, which are shortly described below for clarity.
The term "Cap" refers to a device that covers a certain area of the object it is attached to, whether via surface fastening or insertion. More specifically, for illustrative purposes, the body thereof (e.g. Display Cap Body) may be understood to be largely cylindrical in form. It should be noted, however, that the device comprising the display cap can also include components such as flanges or other mechanical fastening components, and in some potential implementations the main body may itself not be round.
The term "Proximal" refers to a side spatially closer to a main body in a system, in the case of the present invention this term refers to a side closest to a housing of a luminaire system.
The term "Distal" refers to a side spatially further from a main body in a system, in the case of the present invention this term refers to a side furthest from a housing of a luminaire system.
The term "Optical Receiver" refers to a component that receives light. This may be a transparent or translucent material, such as acrylic.
The term "Environmental Factor" refers to any type of measurable value that could be detected by a sensing unit.
The term "Symbol" refers to a recognizable shape or line art that, to a user, represents a measurable value. Some such symbols may be a gauge representing ambient pressure; a cloud with a chemical formula, such as CO₂ or CO, representing the gaseous presence of said chemical; a smoke/vapor icon representing smoke or other related aerosols; a nose or biohazard trefoil representing organic or otherwise olfactible compound in the air; a water drop representing humidity; a thermometer representing temperature; a portion of a sine wave representing electromagnetic radiation; a radiation trefoil representing ionizing radiation; or a variative waveform representing vibration which may include sound levels or structural vibration.
The term "Luminaire" refers to a device that comprises a lighting fixture and a series of peripheral components. In the present invention, the focus is on peripheral components, particularly on a controller, sensor, and modular display components.
The term "Light Guide" refers to either an optical transfer element such as a fiber optic cable or an electrical transfer element such as an electrically conductive wire. This feature is, in any case, responsible for the transfer of a signal from a controlling device to the optical receiver either directly or via a light source closer to the optical receiver, wherein said signal results in a lighting state of a display cap.
The term "Sensing Unit" refers to any device of a sensor, modular or integrated (into a luminaire system) that performs sensing of at least one environmental factor.
In figure 1, a display cap 100 for displaying sensor information to a user is provided. The display cap 100 comprises a display cap body 110, which for illustrative purposes may be pictured as dimensionally similar to a common bottle cap. The display cap body 110 has a proximal end 111 and a distal end 112, wherein the proximal end 111 is designed for connection to an interface element, particularly an interface element 211 of a luminaire system 200. In its most basic form, such a connection may be visualized as a press-on or threaded screw-on configuration common with cap-like components, but in this embodiment there is no limitation on the particular type or mechanism of connection used.
The basic embodiment in figure 1 also comprises an optical receiver 120, which receives light from a source at the proximal end 111. The optical receiver 120 may further comprise a clear contact gel or glue or resin to more easily facilitate the transfer of light. In connection to, or even comprising a terminus of the optical receiver 120 on the distal end 112, is a display surface 130, which is lit with light received by the optical receiver. The display surface 130 displays at least a symbol 131 that represents the sensor information, which is a representation of an environmental factor. As shown in fig. 1, the symbol 131 is recognizable as a commonly stylized measuring tool, but it may also be a representation of the measured factor itself, such as a cloud for a gas.
In some implementations of this embodiment, the display surface 130 may be an opaquely painted acrylic sheet with the at least a pattern of the symbol 131 being a bare spot in the paint, such that light illuminates only the symbol. Furthermore, the entire display cap 100 may be thermoformed or injection molded acrylic (or other translucent or transparent material such as glass or other clear plastic) with only the display surface 130 and the optical receiver 120 having exposed portions for light transference. Such an implementation may decrease time needed for assembly of the display cap 100 due to little or no bonding of parts being required.
In figures 2A through 2C, building on the embodiment of the display cap 100 as discussed hereinabove and shown in figure 1, there is a plurality of potential fixing means 1111 available in combination with a plurality of different versions of an identifying element 140, both being disposed towards the proximal end 111 of the display cap body 110.
Some advantageous combinations of the fixing means 1111 and identifying element 140 are shown in figures 2A to 2C:
In an embodiment shown in figure 2A, the fixing means 1111 is a plurality of magnets, and the identifying element 140 is a specific pattern of the plurality of magnets. There can then be a plurality of patterns of the plurality of magnets, such that multiple types of the display cap 100 may be identified by the identifying element 140 without the necessity of having a separate feature for performing display cap type identification. In the case of this embodiment, the plurality of magnets may be arranged such that they trigger a specific plurality of magnetic switches (or sensors) of an identifying element reader that interfaces with the proximal end 111 of the display cap 110. In this way, multiple display cap types may be identifiable by an identifying element reader through simple magnetic switches (or sensors) determined by the placement of the fixing means 1111 during manufacturing of the display cap 100. The information displayed is then based on the determined magnetic pattern.
In an embodiment shown in figure 2B, the fixing means 1111 is a set of flanges emerging radially from the proximal end 111 configured to accommodate screws. Such an embodiment provides a known and constant positioning for the identifying element 140 with respect to an interface element. This allows for the identifying element 140 to be a stationary readable element such as a bar code or a magnetic code strip, which allows for an identifying element reader to be in a fixed position relative to the display cap 100, reducing design complexity.
In an embodiment shown in figure 2C, the fixing means 1111 is a plurality of protrusions, the protrusions being, for example, bayonet fixture pins or parts of a spring clip mounting. In the case of bayonet fixing, a known endpoint for rotation is known, so only a region of the display cap body 110 may be needed for accommodating the identifying element 140, which is, in the case of figure 2C, an electrical contact for short-circuiting a switch element which is a part of an identifying element reader having a plurality of switch elements at multiple heights, such that a plurality of display cap types may be identifiable based on the vertical placement of the respective identifying element 140 of each display cap type. Vertical, in this case, is particularly the direction formed by traveling from the proximal end 111 to the distal end 112 and vice versa.
In each embodiment shown in figures 2A to 2C, the display cap 100 is able to be set up with a minimal effort from a skilled person and may be manufactured with simple and inexpensive methods such as injection molding, press-fitting, thermoforming, and/or gluing, and may be connected a luminaire system having an appropriate interface element without any need for special expertise.
Figure 3 shows the display cap 100 according the above embodiments, wherein the display cap 100 is shown as bisected along a plane orthogonal to the display surface 130 to show internal structures thereof, wherein the display cap 100 further comprises a light source 150, preferably an LED, is provided as a part of the display cap 100. The light source 150 is present largely in the proximal end 111 of the display cap body 110, and is configured to shine into the optical receiver such that the display surface 130 is lit with light therefrom. In this embodiment, the fixing means 1111 is a simple threading on the display cap body 110, but any version of the fixing means 1111 may be used.
No identifying element is shown in figure 3, but the presence of the light source 150 does not preclude any identifying element 140 from being used.
Notably, in an embodiment wherein the light source 150 is provided in the display cap 100, the display cap 100 can be further from a control module due to it not requiring a light guide to be a relatively expensive fiber optic or cable or other light transporting tool, and instead it can be a wire leading to and powering/controlling the light source 150. Especially in embodiments wherein the display cap 100 is used in a distributed system, embodiments wherein the display cap 100 has the light source 150 may be advantageous in terms of resources and difficulty of installation despite the display cap 100 itself being more expensive to manufacture.
Further in the embodiment shown in figure 3, the display cap 100 is provided with one or more through hole 133 piercing the display surface 130. The through hole(s) 133 provide a means of gas transfer to a sensing unit positioned near the proximal end 111 wherein it would otherwise be covered by the display cap 100. Such an embodiment supports potential modular capabilities in cases wherein a sensing unit or sensor is located in a housing or module on which the display cap 100 is mounted. In cases where multiple sensing units are present, the appropriate display cap 100 may be selected from a design family that comprises multiple symbols 131 but nonetheless all have through holes 133 for allowing a gas or aerosol sensing units to still function even when it is not represented by the display cap 100.
Further in the embodiment shown in figure 3, the display cap 100 is provided with a translucent area 132 on the display surface 130. The translucent area 132 is configured to scatter light received into the optical receiver 120 such that it increases the visibility of at least the symbol 131, but it may also comprise a further area, such as a ring around a perimeter of the display surface 130, to further improve visibility.
Figure 4 shows a basic embodiment of a component 200 of a luminaire system, which is a preferred example of a building infrastructure system. The component 200, while displayed as a box, may take a plurality of forms including a single lighting fixture or a sensor, Alternatively, the elements shown in the illustration refer to a distributed system with multiple modules spatially separated throughout a space.
The component 200, preferably a sensor or a luminare,comprises a housing 210, such as a shell or supporting structure containing or accommodating the relevant features of the component 200. The component 200 further comprises the display cap 100, which is described in the above embodiments. The display cap 100 is arranged such that its proximal end 111 is disposed on or in an interface element 211 accommodated on or in the housing 210.
The component 200 further comprises a controlling module 220, such as a luminaire driver module or microcontroller, which controls at least a lighting state of the display cap 100. Furthermore, the component 200 comprises a light guide 212 that may comprise an optical component such as fiber optic cable or an electrical component such as a wire. The light guide connects the controlling module 220 to the display cap 100 via either connecting a controllable light source 240 to the optical receiver 120 of the display cap 100 in the form of an optical component such as a fiber optic cable or connecting the controlling module 220 to a light source accommodated in the display cap 100, such as the light source 150, in the form of a wire. In the case of the light guide 212 being a wire, the light source 150 is the controllable light source 240.
The component 200 further comprises a sensing unit 230, which may be present in the vicinity of the display cap 100 or which may be in a different location in the case of a spatially distributed system. The sensing unit 230 may comprise a sensor elements that detect a plurality of environmental factors, and transmit information regarding said factors to the controlling module 220.
In figure 5, the above embodiment is expanded upon in a side view of the display cap 100 and interface element 211 via the same bisected view shown in figure 3. Notable features shown are the display cap 100, which comprises a similar embodiment as that of figure 2B; the housing 210; the interface element 211 (in this case as a part of the housing 210); the identifying element 140 of the display cap 100 corresponding to an identifying element reader 2111 of the interface element 211; and the light guide 212, shown here as an optical component, connecting to the optical receiver 120 of the display cap 100.
Furthermore, it is noted that a wire is shown connecting the identifying element reader 2111 to a non-shown component. The component not shown here is the controlling module 220. It should be further noted that, in the case that the interface element 211 is integrated with the housing 210, the interface element may generally be described as a portion of the housing 210 that accommodates or comprises the proximal end 111 of the display cap 100, the fixing means 1111 of the display cap 100, if present, and the identifying element reader 2111, if present.
As discussed regarding the embodiments shown in figures 2A through 2C, there exists a plurality of potential identifying elements 140 and fixing means 1111 combinations for the display cap 100, it logically follows that the interface element 211 may exist in a plurality of coinciding configurations. It should be recognized that, depending on the embodiment of the identifying element 140 and the identifying element reader 2111, there is a tradeoff to be made in space, weight, part cost, and assembly complexity terms. The embodiments of figures 2A and 2C, for example, would involve a plurality of switches and/or switch combinations that would require more wiring be provided and increase the complexity in terms of raw number of parts that must be installed; the embodiment of figure 2B, however, would require fewer parts be installed in the interface element 211 but would require a more complex and expensive identifying element reader 2111 for reading the optical code (in this case bar code) thereon.
In figures 6A and 6B, the interface element 211 is shown as a module that is selectively fixable onto or into (into in figure 6A) the housing 210. The embodiment shown in figures 6A and 6B shows the module accommodating a part of the light guide 212 and the wiring related to the identifying element reader 2111. In such a case, the connection between the controlling module 220 and the module of the interface element 211 would comprise a plug attachment that is attached to the module of the interface element 211 when it is fixedly inserted into or placed onto the housing 110.
In some embodiments, the interface element 211, when implemented as a module, may be configured to be selectively replaceable into or onto existing modular receptacles in existing luminaire designs. In a preferred embodiment, the interface element 211 is configured to replace a passive infrared (PIR) module. In some embodiments, the interface element 211, when implemented as a module, the module may further accommodate the sensor 230.
While not shown in a figure, it is further notable that the preferred embodiment of the present invention involves the lighting state of the display surface 130 of the display cap 100 being controlled by the controlling module 220 via the light guide 212, more specifically the lighting state of the display surface 130 is preferably one of or a combination of a color scale and an intensity scale. This choice in lighting states allows the display cap 100 to be a passive component with no dynamic features (except in the case of the light source 150). The display cap 100 is overall designed with the express purpose of being a simple solution to providing information to a user about the environment of the luminaire system 200.
In the most preferred embodiment, a luminaire forms the component 200 and comprises the interface element 211 with the features described herein above, and is a distributed system with a plurality of sensors 240 that may have their measured environmental information selectively viewed via the display cap 100 of a desired cap type as chosen by a user. Furthermore, each version of the display cap 100 intended for the component 200 is interchangeable due to being designed with a compatible fixing means 1111 and identifying element 140, such that an iteration of the display cap 100 with the symbol 131 representing a temperature may be replaced at will by a user with a different iteration of the display cap 100 with the symbol 131 representing humidity. When the identifying element 140 of the humidity-labeled display cap 100 is read by the identifying element reader 2111, the controlling module 220 automatically signals the controllable light source 240 to light up with the appropriate lighting state according to the range of values measured by the sensor 230 that corresponds to the humidity.
The indefinite article "a" or "an" does not exclude a plurality. A single element or other unit may fulfill the functions of several entities or items recited in the claims. It should be noted when considering implementations of the present invention that, when combining embodiments, all embodiments not separated with an "or" statement are able to be combined. A person skilled in the art may effectively apply embodiments connected with "and/or" statements where appropriate and advantageous.

Claims

A display cap (100) for displaying sensor information to a user, the display cap (100) comprising:
- a display cap body (110) which has a proximal end (111) and a distal end (112),
wherein the proximal end (111) is configured to be inserted into or fixed onto an interface element (211);

- an optical receiver (120) for receiving light from a light emitting component from the proximal end (111); and

- a display surface (130) disposed at the distal end (112), which displays at least a symbol (131) representing a measurable environmental factor,
wherein a portion of the display surface (130) is lit with the light received in the optical receiver (120).
The display cap (100) according to claim 1,
wherein the display cap (100) further comprises
an identifying element (140) for identifying a display cap type based on the symbol (131) displayed by the display surface (130),

wherein the identifying element (140) is configured to interface with an identifying element reader (2111) located in the interface element (211).
The display cap (100) according to claim 1 or 2,
wherein the proximal end (111) comprises a fixing means (1111), the fixing means (1111) comprising
at least one fixing magnet,

at least one flange configured to interface with the housing (210) via securing means, and/or

a threading or other mechanical fastening means.
The display cap (100) according to any one of claims 1 to 3,
wherein the display surface (130) comprises a translucent area (132) for diffusing the light received by the optical receiver (120) to at least a part of the display surface (130).
The display cap (100) according to any one of claims 1 to 4,
wherein the distal end (112) and/or the display surface (130) comprises one or more through holes (133).
The display cap (100) according to any one of claims 1 to 5,
wherein the display cap (100) further comprises a light source (150), preferably an LED.
A component for a building infrastructure system (200) comprising:
- a housing (210),

- a display cap (100)

- a controlling module (220),

- a sensing unit (230), and

- a controllable light source (240),

wherein the sensing unit (230) is configured to
measure a range of measurement levels of at least one environmental factor;

wherein the display cap (100) comprises
- a display cap body (110) which has a proximal end (111) and a distal end (112),
wherein the proximal end (111) is configured to be inserted into or fixed onto an interface element (211),

- an optical receiver (120) for receiving light from a light emitting component from the proximal end (111), and

- a display surface (130) disposed at the distal end (112), which displays at least a symbol (131) representing a measurable environmental factor,
wherein a portion of the display surface (130) is lit with the light received in the optical receiver (120);

wherein the housing (210) accommodates
the interface element (211) which interfaces with the proximal end (111) of the display cap (100) to connect the display cap (100) to the housing (210), and

a light guide (212), such as a fiber optic cable or an electrical cable, which either connects the optical receiver (120) of the display cap (100) to the controllable light source (240), or connects the controllable light source (150, 240) in the proximal end (111) of the display cap (100) to the controlling module (220); and

wherein the controlling module (220) is configured to
receive a signal from the sensing unit (230), and

control an activation state of the controllable light source (240) based on the signal received from the sensing unit (230).
The component according to claim 7,
wherein the display cap (100) further comprises
an identifying element (140) for identifying a display cap type based on the symbol (131) displayed by the display surface (130) via at least one of

a mechanical component,

a reflective optically readable component,

an emissive optically readable component,

an electrical circuit component, and/or

a magnetic component;

wherein the interface element (211) further comprises
an identifying element reader (2111) that determines the display cap type of the display cap (100) according to the identifying element (140) thereon; and

wherein the controlling module (220) is configured to
receive a signal from the identifying element reader (2111), and

control an activation state of the controllable light source (240) further based on the signal received from the identifying element reader (2111).
The component according to claim 8,
wherein the display cap (100) comprises a standardized design such that a display cap representing one environmental factor may be exchanged for a display cap representing a different environmental factor, and

wherein the identifying element reader (2111) is configured to recognize a plurality of display cap (100) types based on a plurality of environmental factors.
The component according to any one of claims 7 to 9,
wherein the interface element (211) is a modular device selectively fixable to or in the housing (210).
The component according to any one of claim 10,
wherein the modular device is configured to be fixedly accommodated in place of, into, or onto an existing module of the building infrastructure system.
The component according to claim 10 or 11,
wherein the modular device is configured to accommodate at least a part of the light guide (212).
The component according to any one of claims 7 to 12,
wherein the controllable light source (240) is configured such that the activation state includes emitting one of a plurality of colors; and

wherein each of the plurality of colors represents a part of the range of measurement levels measured by the sensing unit (230).
The component according to claim 13,
wherein the plurality of colors is a color scale,

wherein colors towards a first end of the scale represent normal values and colors towards a second end of the scale represent elevated or potentially hazardous values.
The component according to any one of claims 7 to 14,
wherein the at least one environmental factor comprises
- an ambient pressure,

- a partial pressure of a gas,

- a concentration of an aerosol,

- a concentration or relative measurement of humidity,

- a temperature,

- a type of radiation, and/or

- a type of vibration.