CA2142084C - Illuminating device with optical conductors for escalators or moving walkways - Google Patents
Illuminating device with optical conductors for escalators or moving walkways Download PDFInfo
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- CA2142084C CA2142084C CA002142084A CA2142084A CA2142084C CA 2142084 C CA2142084 C CA 2142084C CA 002142084 A CA002142084 A CA 002142084A CA 2142084 A CA2142084 A CA 2142084A CA 2142084 C CA2142084 C CA 2142084C
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- light
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- illuminating device
- light source
- light sources
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- 239000004020 conductor Substances 0.000 title claims abstract description 66
- 238000005286 illumination Methods 0.000 claims abstract description 46
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/22—Balustrades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Escalators And Moving Walkways (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Couplings Of Light Guides (AREA)
- Planar Illumination Modules (AREA)
Abstract
In an escalator (6), passive light sources (2) are mounted at freely selectable illumination points (5), which light sources are each connected by way of a respective optical conductor (4), which is constructed as glass fibre, with an active light source (1) and illuminate the movable stair or pallet belt (14) with the thus received light by way of a respective integrated optical system (1.4).
The active light source (1) is easily accessible, centrally arranged and contains a lamp (1.2), the light of which is fed into the discrete optical conductors (4) at the end face in the optical conductor terminal (1.3). These optical conductors together form a fibre-optical light transmission network (3) from the active light source (1) to the passive light sources (2) and are combined at each of both sides of the movable stair belt (14) into a respective strand/shaped optical conductor bundle (2), which bundles are laid into the pedestal channels (23), with branches (24). .The passive light sources (2) need no current supply and also produce no heat and are let into light outlets (25) of the inward balustrade sides (26), the pedestal plates (27), the outer balustrade cover strips (28) or the inner balustrade cover strips (29).
This illuminating device serves not only for the illumination, but also for the decorative make-up and makes special light effects possible by the use of coloured or polarised light. By reason of structural advantages, it is particularly suitable for use in the case of narrow profile balustrades and also outdoors, in the case of wetness or moisture.
The active light source (1) is easily accessible, centrally arranged and contains a lamp (1.2), the light of which is fed into the discrete optical conductors (4) at the end face in the optical conductor terminal (1.3). These optical conductors together form a fibre-optical light transmission network (3) from the active light source (1) to the passive light sources (2) and are combined at each of both sides of the movable stair belt (14) into a respective strand/shaped optical conductor bundle (2), which bundles are laid into the pedestal channels (23), with branches (24). .The passive light sources (2) need no current supply and also produce no heat and are let into light outlets (25) of the inward balustrade sides (26), the pedestal plates (27), the outer balustrade cover strips (28) or the inner balustrade cover strips (29).
This illuminating device serves not only for the illumination, but also for the decorative make-up and makes special light effects possible by the use of coloured or polarised light. By reason of structural advantages, it is particularly suitable for use in the case of narrow profile balustrades and also outdoors, in the case of wetness or moisture.
Description
214~08~
. _,_ DESCRIPTION:
Illuminating device with optical conductors for escalators or moving walkways The invention relates to an illuminating device with optical conductors for escalators or moving walkways, which contain a movable stair or pallet belt and display at least one vertical balustrade arranged laterally therebeside as well as a hand rail guided at the upper end thereof in a rail, wherein light from at least one central light source is guided to illumination points along the escalator ~or the moving walkway by optical conductors extending at least partially along the balustrade. Such illuminations serve generally in escalators or moving walkways to increase the safety for the user and to improve the decorative make-up by special light effect.
Usually, the illuminations for escalators and moving walkways are constructed in the form of elongate fluorescent lamps which are arranged below the hand rail or recessed in the balustrades, whereby also a~certain protection against vandals is assured by the recessed arrangement. Such conventional illumination equipments are however badly suited for installation in escalators and moving walkways with so-called narrow profile balustrades, which because of their small volume profile below the hand rail look very elegant and for that reason enjoy increasing popularity. The installation of elongate fluorescent lamps of large volume into the narrow balustrade profile would result in constructional problems and might also not satisfy aesthetically.
On the other hand, illumination devices have however become known, which enable an adequate illumination also for narrow profile balustrades without in that case impairing the optical overall impression of the particularly delicate balustrade profile or narrowing its decorative effect. Such solutions consist substantially of lamps of small dimensions let in below the hand rail or in the balustrade pedestal. Hitherto, . smaller low-voltage tubes or also Halogen lamps were mostly used for this purpose.
Both suffer from the disadvantage that a relatively large number of lamp units must be used, which because of their different service life leads to frequent additional service operations at the escalators or moving walkways. Halogen lamps moreover present the constructor with heat problems, since they require a very good insulation because of their relatively high heat radiation in order that no hot installation parts form, with which the users of the escalators or moving walkways can come into contact. Moreover, low-voltage tubes such as Halogen lamps must be so installed that they can be exchanged free of problems. The step region, which is important for the safety of stepping, also often remains illuminated only inadequately so that it become necessary to mount additional illumination devices in the region of the comb plate for the entry or exit. Illuminations improved later in such a manner impair the elegant appearance of the narrow profile balustrades and are often perceived as pure utility illuminations.
Furthermore, an escalator with a balustrade as well as a hand rail guided at the upper edge of the same, in which a stationary optical conductor consisting of light-conducting fibres is mounted in a rectangular cavity underneath the hand rail, has become known from the German Patent specification 42 09 505. The cavity of rectangular cross-section is closed off downwardly by a transparent PERSPEX cover. The rectangular optical conductor consists of a plurality of individual optical fibres which together conduct the light, which is produced by a light source and fed in at its end face, in longitudinal direction through the optical conductor.
The individual optical fibres however do not extend exactly in longitudinal direction of the optical conductor, but at an extremely acute angle thereto so that they also impinge on the downwardly directed light exit surface of the optical conductor at this extremely acute angle.
The rectangular cross-section of the optical conductor thus reduces over the length of the optical conductor in the manner of a wedge, wherein the cross-sectional area remaining each time from a full cross-section is filled out by a counter layer. Counter layers, such as optically conducting fibres, are flexible so that the optical conductor can be laid parallelly to the endlessly circulating hand rail stationarily in the cavity of rectangular cross-section lying thereunder. The light, which is ~ fed in by the light source at the end face, is conducted further in the optically conducting fibres until it impinges at an acute angle on the transparent PERSPEX cover which covers the optical conductor downwardly and ~142~~~
. _,_ DESCRIPTION:
Illuminating device with optical conductors for escalators or moving walkways The invention relates to an illuminating device with optical conductors for escalators or moving walkways, which contain a movable stair or pallet belt and display at least one vertical balustrade arranged laterally therebeside as well as a hand rail guided at the upper end thereof in a rail, wherein light from at least one central light source is guided to illumination points along the escalator ~or the moving walkway by optical conductors extending at least partially along the balustrade. Such illuminations serve generally in escalators or moving walkways to increase the safety for the user and to improve the decorative make-up by special light effect.
Usually, the illuminations for escalators and moving walkways are constructed in the form of elongate fluorescent lamps which are arranged below the hand rail or recessed in the balustrades, whereby also a~certain protection against vandals is assured by the recessed arrangement. Such conventional illumination equipments are however badly suited for installation in escalators and moving walkways with so-called narrow profile balustrades, which because of their small volume profile below the hand rail look very elegant and for that reason enjoy increasing popularity. The installation of elongate fluorescent lamps of large volume into the narrow balustrade profile would result in constructional problems and might also not satisfy aesthetically.
On the other hand, illumination devices have however become known, which enable an adequate illumination also for narrow profile balustrades without in that case impairing the optical overall impression of the particularly delicate balustrade profile or narrowing its decorative effect. Such solutions consist substantially of lamps of small dimensions let in below the hand rail or in the balustrade pedestal. Hitherto, . smaller low-voltage tubes or also Halogen lamps were mostly used for this purpose.
Both suffer from the disadvantage that a relatively large number of lamp units must be used, which because of their different service life leads to frequent additional service operations at the escalators or moving walkways. Halogen lamps moreover present the constructor with heat problems, since they require a very good insulation because of their relatively high heat radiation in order that no hot installation parts form, with which the users of the escalators or moving walkways can come into contact. Moreover, low-voltage tubes such as Halogen lamps must be so installed that they can be exchanged free of problems. The step region, which is important for the safety of stepping, also often remains illuminated only inadequately so that it become necessary to mount additional illumination devices in the region of the comb plate for the entry or exit. Illuminations improved later in such a manner impair the elegant appearance of the narrow profile balustrades and are often perceived as pure utility illuminations.
Furthermore, an escalator with a balustrade as well as a hand rail guided at the upper edge of the same, in which a stationary optical conductor consisting of light-conducting fibres is mounted in a rectangular cavity underneath the hand rail, has become known from the German Patent specification 42 09 505. The cavity of rectangular cross-section is closed off downwardly by a transparent PERSPEX cover. The rectangular optical conductor consists of a plurality of individual optical fibres which together conduct the light, which is produced by a light source and fed in at its end face, in longitudinal direction through the optical conductor.
The individual optical fibres however do not extend exactly in longitudinal direction of the optical conductor, but at an extremely acute angle thereto so that they also impinge on the downwardly directed light exit surface of the optical conductor at this extremely acute angle.
The rectangular cross-section of the optical conductor thus reduces over the length of the optical conductor in the manner of a wedge, wherein the cross-sectional area remaining each time from a full cross-section is filled out by a counter layer. Counter layers, such as optically conducting fibres, are flexible so that the optical conductor can be laid parallelly to the endlessly circulating hand rail stationarily in the cavity of rectangular cross-section lying thereunder. The light, which is ~ fed in by the light source at the end face, is conducted further in the optically conducting fibres until it impinges at an acute angle on the transparent PERSPEX cover which covers the optical conductor downwardly and ~142~~~
is radiated from there parallelly to the balustrade wall surface continuously into the foot region.
Since the optical conductor employed extends along the hand rail over the full length of the upper balustrade rim, the illumination achievable over the stepping path is preset by the light conduction and in principle restricted in respect of the light intensity. It might therefore be difficult with this balustrade illumination adequately to illuminate the stepping path in respect of elimination of danger or decorative make-up in all cases. On the other hand, a structuring of the optical conductor in the sense of an increase in the light yield, leads to a relatively wide build-up which is badly suited for installation into the narrow profile of narrow profile balustrades. Furthermore, in the case of the provided optical conductor, a fibre-optical element is concerned, which by reason of its integration into the hand rail is tailored individually for each installation. An adaptation to different forms of construction or light conditions is hardly possible so that the application of such an optical conductor is greatly restricted in respect of flexibility and freedom of choice. Nere, the invention is to create a remedy.
Accordingly, it is the task of the invention according to the application to propose an illumination equipment for escalators and moving walkways, which is suitable for installation in narrow profile balustrades and all other known balustrades and the decorative make-up of which as well as its elegant optical overall impression is re-inforced by structural advantages and special light effects. The illumination according to the application shall, in particular also for narrow profile balustrades, assure an illumination which is close to the movable stair or pallet belt ---- and consequently effective and be suitable for use in the external region with moisture and wetness.
This problem is solved according to the invention by the means as characterised in the independent patent claim. Advantageous developments are indicated in the dependent claims.
The advantages achieved by the invention according to the application result substantially from the circumstance that the passive light sources are constructed as integral units, in which no heat is produced and which are operated without mains connection and largely resistant to moisture and wetness.
. . """"
214~~~
Since the optical conductor employed extends along the hand rail over the full length of the upper balustrade rim, the illumination achievable over the stepping path is preset by the light conduction and in principle restricted in respect of the light intensity. It might therefore be difficult with this balustrade illumination adequately to illuminate the stepping path in respect of elimination of danger or decorative make-up in all cases. On the other hand, a structuring of the optical conductor in the sense of an increase in the light yield, leads to a relatively wide build-up which is badly suited for installation into the narrow profile of narrow profile balustrades. Furthermore, in the case of the provided optical conductor, a fibre-optical element is concerned, which by reason of its integration into the hand rail is tailored individually for each installation. An adaptation to different forms of construction or light conditions is hardly possible so that the application of such an optical conductor is greatly restricted in respect of flexibility and freedom of choice. Nere, the invention is to create a remedy.
Accordingly, it is the task of the invention according to the application to propose an illumination equipment for escalators and moving walkways, which is suitable for installation in narrow profile balustrades and all other known balustrades and the decorative make-up of which as well as its elegant optical overall impression is re-inforced by structural advantages and special light effects. The illumination according to the application shall, in particular also for narrow profile balustrades, assure an illumination which is close to the movable stair or pallet belt ---- and consequently effective and be suitable for use in the external region with moisture and wetness.
This problem is solved according to the invention by the means as characterised in the independent patent claim. Advantageous developments are indicated in the dependent claims.
The advantages achieved by the invention according to the application result substantially from the circumstance that the passive light sources are constructed as integral units, in which no heat is produced and which are operated without mains connection and largely resistant to moisture and wetness.
. . """"
214~~~
Accordingly, there is no danger that balustrades or hand rails are heated impermissibly or that the persons to be transported come into contact with voltage-carrying electrical equipments, such as holders or cables. In the case of application in the external region, short-circuits due to moisture or wetness are excluded.
Furthermore, the invention according to the application represents an adjustable and detachable construction which after the installation can be adapted simply and rapidly to changed conditions as can result from constructional rearrangements or changed light conditions. An illumination equipment constructed in such a manner has a_flexibility in the application and a freedom in the structuring as could not be achieved by individually tailored illuminations.
Furthermore, it has proved that the essential elements of the invention according to the invention, namely the central active light source, the discrete optical conductors as well as the compact passive light sources are related to function and not installation and can thus be used irrespective of the constructional structure of an installation. In respect of the illumination elements and their connection, one can speak of a build-up in the manner of a kit. For that reason, the same individual parts mass-produced in standard sizes can always be used for the different variants of execution of escalators and moving walkways. From this, there results the advantage of a simple production as well as an uncomplicated disposition of the material requirement. The adaptation to the individual case of application takes place by way of the discrete optical conductors through the appropriate positioning of the passive light sources.
The kit-like elements making up the illumination device according to the invention are also so constructed that they let themselves be assembled and also again disassembled easily in situ and display a relatively low weight. The illumination device according to the invention is therefore excellently suitable for installation in situ, where one often has to work under difficult conditions due to constructional or other difficulties.
It has also proved to be advantageous that a very lively image of the stair or pallet belt arises due to the discreet light and shadow effect of the passive. light sources arranged at a spacing up to about 30 centimetres.
These passive light sources produce neither light nor heat, but radiate the light received from the associated optical conductors onto the stair belt.
Since they are consequently not subject to any wear or ageing they have a very long service life and require practically no maintenance. This has proved to be very advantageous in view of the number of the passive light sources used as well as their often concealed installation in the balustrade pedestal. This contrasts against the individual or several central active light sources, in which the light required for the operation of the optical conductors and thereby much heat is produced. In that case, however, individual lamps are concerned each time, which can be cooled in suitable manner and installed at an easily accessible place, for example in the machine room.
A change of lamp, when necessary, is therefore possible very simply and rapidly and without having to disassemble the stair cladding for this purpose.
In one aspect, the present invention provides an illuminating device including optical conductors for one of escalators and moving walkways, the one of the escalators and moving walkways including one of a movable stair and pallet belt respectively, having at least one vertical balustrade arranged laterally thereof, as well as a hand rail guided at the upper end thereof on a further rail, wherein light from at least one central light source is guided to a plurality of individual illumination points along the one of the escalator and moving walkway through the optical conductors extending at least partially along the balustrade, wherein the plurality of individual illumination points are passive light sources, each of the passive light sources including an assembly device, an optical conductor holder and an integrated optical system, the plurality of individual illumination points being located at spatially discrete positions along the one of the escalator and moving walkways and being connected via a respective discrete glass fiber optical conductor with an optical conductor terminal of the at least one central light source, and wherein the at least one central light source including a lamp positioned within a housing.
The invention is explained in the following in its application in the case of an escalator with narrow profile balustrades at both sides, wherein a stair belt illumination arranged in the balustrade pedestal is provided, with the aid of the description as well as the drawing. The device shown here is however generally usable when a real elements, for example in the view from underneath, or individual constructional elements within the plant are to be illuminated in the case of escalators or moving walkways with glass cladding. In the drawing illustrating merely this stair belt illumination as example of application of the invention, there show:
-5a-Figure 1 schematically, the disposition and basic build-up of the illuminating device according to the invention for the illumination of a stair step from the balustrade pedestal.
Figure 2 in plan view and partially in vertical section, an escalator with narrow profile balustrades, Wherein the passive light sources of the illuminating device according to the invention are installed in both the balustrade pedestals for the spatially discrete illumination of the movable stair belt.
Figure 1 illustrates schematically the individual components as well as the build-up of the illuminating device according to the invention, which device in the shown embodiment consists substantially of an active light source 1, a plurality of passive light sources 2 as well as a fibre-optical light transmission network 3 connected therebetween.
The active light source 1 is preferably installed at a central point of the escalator installation and in a housing 1.1 contains a lamp 1.2, which produces light of high intensity fed in the optical conductor terminal 1.3 into the discrete optical conductors 4 of the fibre-optical light transmission network 3. In the case of the lamp 1.2, there is for example concerned a suitable fluorescent tube or a Halogen lamp which can be backed by a light-reflecting mirror surface 1.4 to increase the light yield. In addition, a suitable cooling is provided because of the great heat output connected with the light production. The fibre-optical light transmission network 3 produces the optical connection from the active light source 1 to the individual illumination points 5 in the escalator 6.
For this purpose, each discrete optical conductor 1 is connected at one end to the common optical conductor terminal 1.3 of the active light source 1 and at the other end both an individual passive light source 2 associated therewith in the illumination point 5. Thus, only two terminals are provided for each optical conductor 4, whereby a high reliability is assured for the light transmission network 3. The discrete optical conductors 4 thus transmit the light, which is produced by the active light source 1 and fed in at their end faces, substantially in their longitudinal directions to the passive light sources 2, where it is radiated for illumination of the escalator 6. The passive light sources 2 each display a respective assembly device 2.1, by which they can be installed at suitable illumination points 5 of the escalator 6, namely in the pedestal plate 8 of the balustrade 7 in the case of the example of embodiment of the Figure 1. The connection of the optical conductors 4 at the inputs of the passive light sources 2 takes place each time by means of an optical conductor holder 2.2 and a respective integrated optical system 2.3 is provided at the outputs for the radiation of the received light. The optical conductor holder 2.2 with the connected optical conductor 4 as well as also the integrated optical system 2.3 contain no voltage-carrying or heat-producing parts so that the passive light sources 2 as well as the also the optical conductors 4 feeding the light to them are usable freely _,_ 21~20~~
in wetness and moisture outdoors.
The function of the illuminating equipment according to the application is evident from the interconnection of its elements. In the example of application of the Figure 1, the light produced in the active light source 1 is transmitted by way of the discrete optical conductors 4 to the passive light sources 2 in the pedestal plate 8 or to below the fl exi bl a hand rai 1 11, whi ch i s pl aced on the bal ustrade 7 by means of a cover prof i 1 a 9 and a gu i de rai 1 10, and radi ated from there by means of the integrated optical system 2.3 to the foot region of the balustrade 7, to the outer cover profile 13 or in the direction of the step-shaped platform 12.
Figure 2 shows an embodiment of the illuminating device according to the invention in its application for illumination of a continuous escalator 6, which contains substantially a movable stair belt 14, with an upper load-carrying travel path 15, a lower return path 16 and a turning portion 17 at the lower stair end as well as a turning portion 18 at the upper stair end. The movable stair belt 14 consists of a plurality of step-shaped platforms 12, which are articulatedly connected one among the other at both their sides into an endless loop, run in guide rails and are driven by an upper sprocket wheel which sits on a motor-driven main shaft and is not illustrated further here. Furthermore, this escalator 6 is so constructed and driven as is familiar to the expert active in the field of the escalator technology.
However, in the case of the present continuous escalator 6 according to Figure 2, the balustrades 19 at both sides of the movable stair belt 14 are constructed as narrow profile balustrades 7, which can be transparent, for example assembled from synthetic material or clear glass panes.
Because of their particularly narrow profile and also because of the elegant optical overall impression, they are not suitable for the installation of conventional lamps of large volume. Correspondingly, the flexible hand rail 11, which is placed onto the balustrade 19 by means of a cover profile 9 and a guide rail 10, is also constructed to be narrow and ~ the cavity lying thereunder is of too small a volume for conventional lamps to be accommodated therein. As can be recognised from Figure 2, the illuminating device in the present example contains an active light source 2142~8~
_$_ 1, which is normally provided with a suitable cooling and in which any desired lamp of sufficiently high light intensity can be used as lamp 1.2.
Since elevated temperature and thereby reduced service life of the components must be reckoned with in spite of the cooling, the active light source 1 is mounted to be easily accessible, for example within the escalator 6 between the upper load-carrying travel section 15 and the return section 16, so that a replacement of the lamp 1.2 on its failure or for the purpose of the precautionary maintenance is possible easily and rapidly and without for this purpose having to remove the escalator cladding 20 or the underneath view cladding 21.
For the operation of the illuminating device according to the invention, the light produced by the active light source 1 must be transmitted to the passive light sources 2 mounted at suitable illumination points 5 in the escalator installation. The fibre-optical light transmission network 3 consisting of the discrete optical conductors 4 serves for this purpose. These optical conductors 4 are combined at each of both the sides of the movable stair belt 14 into a respective strand-shaped optical conductor bundle 22, which bundles are laid into the pedestal channels 23 and stand in connection with the individual passive light sources 2 by way of branches 24. In the present example of embodiment, the innovation is constructed as stair belt illumination in the pedestal of the escalator 6. Accordingly, the passive light sources 2 are mounted in light outlets 27 in the pedestal plate 8 of the narrow profile balustrades 7 and so oriented that the light received from the optical conductors 4 is radiated onto the step-shaped platforms 12. In an alternative embodiment, the passive light sources 2 can be let into light outlets 25 of the inward balustrade sides 26, the inward or outward balustrade cover profiles or balustrade cover strips 28.
The use of discrete passive light sources 2 leads normally to a discontinuous and likewise discrete illumination of the stair belt 14, which results in a very lively picture of the step-shaped platforms 12 and moreover makes special light effects possible. On the other hand, the elements of the illuminating equipment also display small dimensions in normal mode of construction so that, in the~case of installation at a close spacing or even flush installation, the impression of a quasi-continuous illumination can readily be achieved by the discrete passive light sources 2.
''' ~14~~8~:
_g_ The use of coloured or polarised light is provided for the achievement of particular optical effects, wherein the requirements of the escalator illumination are prerequisites for the light in both cases.
In place of a single central active light source 1, several active light sources can also be deployed, which on the use of coloured light each cover a discrete spectral range and are associated individually or in combi nati on wi th the opti cal conductors 4 by way of correspond i ng opti cal conductor terminals 1.3.
On the other hand, a coloured illumination can also be achieved with a single wide-band active light source 1, the light of which contains at least the spectral ranges corresponding to the desired colours. The individual colours are then filtered out of the emitted light by a filter equipment 1 connected behind the active light source 1 in the housing 1.1 or allocated spectrally to the individual illumination points 5 by means of colour filters which form a respective light exit surface in each of the integrated optical systems of the passive light sources 2.
It is obvious to the expert that the invention is not restricted to a stair belt illumination in the balustrade pedestal 29. It is suitable generally for the light-technical refurbishing of existing escalators or moving walkways, in particular such with narrow profile balustrades 7, in which the usual profile of large volume is not available below the hand rail 11. As a further variant, the housing 1.1 can be dispensed with for the central active light source 1 and, instead thereof, the lamp 1.2 together with the light-reflecting mirror surface 1.4 can be constructed as part of the optical conductor terminal 1.3.
REFERENCE SYMBOLS:
1) A central active light source 1 Figure 1 Housing 1.1 Lamp 1.2 Optical conductor terminal 1.3 Light-reflecting mirror surface 1.4 2) Plurality of passive light sources 2 ~
Assembly device 2.1 Optical conductor holder 2.2 Integrated optical system 2.3 3) Fibre-optical light transmission network 3 4) Discrete optical conductor f 5) Illumination point 5 6) Escalator (continuous)/moving walkway 6 7) Narrow profile balustrades 8) Pedestal plate (in balustrade) ~ 8 9 Cover prof i 1 a ) 10)Guide rail 10 11)Handrail (flexible) 11 12)Step-shaped platforms 12 13)Outer cover profile 13 znzos~
Furthermore, the invention according to the application represents an adjustable and detachable construction which after the installation can be adapted simply and rapidly to changed conditions as can result from constructional rearrangements or changed light conditions. An illumination equipment constructed in such a manner has a_flexibility in the application and a freedom in the structuring as could not be achieved by individually tailored illuminations.
Furthermore, it has proved that the essential elements of the invention according to the invention, namely the central active light source, the discrete optical conductors as well as the compact passive light sources are related to function and not installation and can thus be used irrespective of the constructional structure of an installation. In respect of the illumination elements and their connection, one can speak of a build-up in the manner of a kit. For that reason, the same individual parts mass-produced in standard sizes can always be used for the different variants of execution of escalators and moving walkways. From this, there results the advantage of a simple production as well as an uncomplicated disposition of the material requirement. The adaptation to the individual case of application takes place by way of the discrete optical conductors through the appropriate positioning of the passive light sources.
The kit-like elements making up the illumination device according to the invention are also so constructed that they let themselves be assembled and also again disassembled easily in situ and display a relatively low weight. The illumination device according to the invention is therefore excellently suitable for installation in situ, where one often has to work under difficult conditions due to constructional or other difficulties.
It has also proved to be advantageous that a very lively image of the stair or pallet belt arises due to the discreet light and shadow effect of the passive. light sources arranged at a spacing up to about 30 centimetres.
These passive light sources produce neither light nor heat, but radiate the light received from the associated optical conductors onto the stair belt.
Since they are consequently not subject to any wear or ageing they have a very long service life and require practically no maintenance. This has proved to be very advantageous in view of the number of the passive light sources used as well as their often concealed installation in the balustrade pedestal. This contrasts against the individual or several central active light sources, in which the light required for the operation of the optical conductors and thereby much heat is produced. In that case, however, individual lamps are concerned each time, which can be cooled in suitable manner and installed at an easily accessible place, for example in the machine room.
A change of lamp, when necessary, is therefore possible very simply and rapidly and without having to disassemble the stair cladding for this purpose.
In one aspect, the present invention provides an illuminating device including optical conductors for one of escalators and moving walkways, the one of the escalators and moving walkways including one of a movable stair and pallet belt respectively, having at least one vertical balustrade arranged laterally thereof, as well as a hand rail guided at the upper end thereof on a further rail, wherein light from at least one central light source is guided to a plurality of individual illumination points along the one of the escalator and moving walkway through the optical conductors extending at least partially along the balustrade, wherein the plurality of individual illumination points are passive light sources, each of the passive light sources including an assembly device, an optical conductor holder and an integrated optical system, the plurality of individual illumination points being located at spatially discrete positions along the one of the escalator and moving walkways and being connected via a respective discrete glass fiber optical conductor with an optical conductor terminal of the at least one central light source, and wherein the at least one central light source including a lamp positioned within a housing.
The invention is explained in the following in its application in the case of an escalator with narrow profile balustrades at both sides, wherein a stair belt illumination arranged in the balustrade pedestal is provided, with the aid of the description as well as the drawing. The device shown here is however generally usable when a real elements, for example in the view from underneath, or individual constructional elements within the plant are to be illuminated in the case of escalators or moving walkways with glass cladding. In the drawing illustrating merely this stair belt illumination as example of application of the invention, there show:
-5a-Figure 1 schematically, the disposition and basic build-up of the illuminating device according to the invention for the illumination of a stair step from the balustrade pedestal.
Figure 2 in plan view and partially in vertical section, an escalator with narrow profile balustrades, Wherein the passive light sources of the illuminating device according to the invention are installed in both the balustrade pedestals for the spatially discrete illumination of the movable stair belt.
Figure 1 illustrates schematically the individual components as well as the build-up of the illuminating device according to the invention, which device in the shown embodiment consists substantially of an active light source 1, a plurality of passive light sources 2 as well as a fibre-optical light transmission network 3 connected therebetween.
The active light source 1 is preferably installed at a central point of the escalator installation and in a housing 1.1 contains a lamp 1.2, which produces light of high intensity fed in the optical conductor terminal 1.3 into the discrete optical conductors 4 of the fibre-optical light transmission network 3. In the case of the lamp 1.2, there is for example concerned a suitable fluorescent tube or a Halogen lamp which can be backed by a light-reflecting mirror surface 1.4 to increase the light yield. In addition, a suitable cooling is provided because of the great heat output connected with the light production. The fibre-optical light transmission network 3 produces the optical connection from the active light source 1 to the individual illumination points 5 in the escalator 6.
For this purpose, each discrete optical conductor 1 is connected at one end to the common optical conductor terminal 1.3 of the active light source 1 and at the other end both an individual passive light source 2 associated therewith in the illumination point 5. Thus, only two terminals are provided for each optical conductor 4, whereby a high reliability is assured for the light transmission network 3. The discrete optical conductors 4 thus transmit the light, which is produced by the active light source 1 and fed in at their end faces, substantially in their longitudinal directions to the passive light sources 2, where it is radiated for illumination of the escalator 6. The passive light sources 2 each display a respective assembly device 2.1, by which they can be installed at suitable illumination points 5 of the escalator 6, namely in the pedestal plate 8 of the balustrade 7 in the case of the example of embodiment of the Figure 1. The connection of the optical conductors 4 at the inputs of the passive light sources 2 takes place each time by means of an optical conductor holder 2.2 and a respective integrated optical system 2.3 is provided at the outputs for the radiation of the received light. The optical conductor holder 2.2 with the connected optical conductor 4 as well as also the integrated optical system 2.3 contain no voltage-carrying or heat-producing parts so that the passive light sources 2 as well as the also the optical conductors 4 feeding the light to them are usable freely _,_ 21~20~~
in wetness and moisture outdoors.
The function of the illuminating equipment according to the application is evident from the interconnection of its elements. In the example of application of the Figure 1, the light produced in the active light source 1 is transmitted by way of the discrete optical conductors 4 to the passive light sources 2 in the pedestal plate 8 or to below the fl exi bl a hand rai 1 11, whi ch i s pl aced on the bal ustrade 7 by means of a cover prof i 1 a 9 and a gu i de rai 1 10, and radi ated from there by means of the integrated optical system 2.3 to the foot region of the balustrade 7, to the outer cover profile 13 or in the direction of the step-shaped platform 12.
Figure 2 shows an embodiment of the illuminating device according to the invention in its application for illumination of a continuous escalator 6, which contains substantially a movable stair belt 14, with an upper load-carrying travel path 15, a lower return path 16 and a turning portion 17 at the lower stair end as well as a turning portion 18 at the upper stair end. The movable stair belt 14 consists of a plurality of step-shaped platforms 12, which are articulatedly connected one among the other at both their sides into an endless loop, run in guide rails and are driven by an upper sprocket wheel which sits on a motor-driven main shaft and is not illustrated further here. Furthermore, this escalator 6 is so constructed and driven as is familiar to the expert active in the field of the escalator technology.
However, in the case of the present continuous escalator 6 according to Figure 2, the balustrades 19 at both sides of the movable stair belt 14 are constructed as narrow profile balustrades 7, which can be transparent, for example assembled from synthetic material or clear glass panes.
Because of their particularly narrow profile and also because of the elegant optical overall impression, they are not suitable for the installation of conventional lamps of large volume. Correspondingly, the flexible hand rail 11, which is placed onto the balustrade 19 by means of a cover profile 9 and a guide rail 10, is also constructed to be narrow and ~ the cavity lying thereunder is of too small a volume for conventional lamps to be accommodated therein. As can be recognised from Figure 2, the illuminating device in the present example contains an active light source 2142~8~
_$_ 1, which is normally provided with a suitable cooling and in which any desired lamp of sufficiently high light intensity can be used as lamp 1.2.
Since elevated temperature and thereby reduced service life of the components must be reckoned with in spite of the cooling, the active light source 1 is mounted to be easily accessible, for example within the escalator 6 between the upper load-carrying travel section 15 and the return section 16, so that a replacement of the lamp 1.2 on its failure or for the purpose of the precautionary maintenance is possible easily and rapidly and without for this purpose having to remove the escalator cladding 20 or the underneath view cladding 21.
For the operation of the illuminating device according to the invention, the light produced by the active light source 1 must be transmitted to the passive light sources 2 mounted at suitable illumination points 5 in the escalator installation. The fibre-optical light transmission network 3 consisting of the discrete optical conductors 4 serves for this purpose. These optical conductors 4 are combined at each of both the sides of the movable stair belt 14 into a respective strand-shaped optical conductor bundle 22, which bundles are laid into the pedestal channels 23 and stand in connection with the individual passive light sources 2 by way of branches 24. In the present example of embodiment, the innovation is constructed as stair belt illumination in the pedestal of the escalator 6. Accordingly, the passive light sources 2 are mounted in light outlets 27 in the pedestal plate 8 of the narrow profile balustrades 7 and so oriented that the light received from the optical conductors 4 is radiated onto the step-shaped platforms 12. In an alternative embodiment, the passive light sources 2 can be let into light outlets 25 of the inward balustrade sides 26, the inward or outward balustrade cover profiles or balustrade cover strips 28.
The use of discrete passive light sources 2 leads normally to a discontinuous and likewise discrete illumination of the stair belt 14, which results in a very lively picture of the step-shaped platforms 12 and moreover makes special light effects possible. On the other hand, the elements of the illuminating equipment also display small dimensions in normal mode of construction so that, in the~case of installation at a close spacing or even flush installation, the impression of a quasi-continuous illumination can readily be achieved by the discrete passive light sources 2.
''' ~14~~8~:
_g_ The use of coloured or polarised light is provided for the achievement of particular optical effects, wherein the requirements of the escalator illumination are prerequisites for the light in both cases.
In place of a single central active light source 1, several active light sources can also be deployed, which on the use of coloured light each cover a discrete spectral range and are associated individually or in combi nati on wi th the opti cal conductors 4 by way of correspond i ng opti cal conductor terminals 1.3.
On the other hand, a coloured illumination can also be achieved with a single wide-band active light source 1, the light of which contains at least the spectral ranges corresponding to the desired colours. The individual colours are then filtered out of the emitted light by a filter equipment 1 connected behind the active light source 1 in the housing 1.1 or allocated spectrally to the individual illumination points 5 by means of colour filters which form a respective light exit surface in each of the integrated optical systems of the passive light sources 2.
It is obvious to the expert that the invention is not restricted to a stair belt illumination in the balustrade pedestal 29. It is suitable generally for the light-technical refurbishing of existing escalators or moving walkways, in particular such with narrow profile balustrades 7, in which the usual profile of large volume is not available below the hand rail 11. As a further variant, the housing 1.1 can be dispensed with for the central active light source 1 and, instead thereof, the lamp 1.2 together with the light-reflecting mirror surface 1.4 can be constructed as part of the optical conductor terminal 1.3.
REFERENCE SYMBOLS:
1) A central active light source 1 Figure 1 Housing 1.1 Lamp 1.2 Optical conductor terminal 1.3 Light-reflecting mirror surface 1.4 2) Plurality of passive light sources 2 ~
Assembly device 2.1 Optical conductor holder 2.2 Integrated optical system 2.3 3) Fibre-optical light transmission network 3 4) Discrete optical conductor f 5) Illumination point 5 6) Escalator (continuous)/moving walkway 6 7) Narrow profile balustrades 8) Pedestal plate (in balustrade) ~ 8 9 Cover prof i 1 a ) 10)Guide rail 10 11)Handrail (flexible) 11 12)Step-shaped platforms 12 13)Outer cover profile 13 znzos~
14) Movable stair or pallet belt 14 Figure 2 (Tread path only for source point) 15) Load-carrying travel section (Upper travel 15 section) 16) Return section (Lower travel section) 16 17) Turning section at lower stair end 17 18) Turning section at upper stair end 18 19) Balustrade 19 20) Escalator cladding 20 21) Underneath view cladding 21 22) Optical conductor bundle (Strand-shape) 22 23) Pedestal channels 23 24) Branches 24 25) Light outlets 25 26) Inward balustrade sides 26 27) Pedestal plates 27 28) Outer balustrade cover strip 28 29) Balustrade pedestal 29 30) Optical filters (Representing a light exit 30 surface)
Claims (12)
1. An illuminating device including optical conductors for one of escalators and moving walkways, the one of the escalators and moving walkways including one of a movable stair and pallet belt respectively, having at least one vertical balustrade arranged laterally thereof, as well as a hand rail guided at the upper end thereof on a further rail, wherein light from at least one central light source is guided to a plurality of individual illumination points along the one of the escalator and moving walkway through the optical conductors extending at least partially along the balustrade, wherein the plurality of individual illumination points are passive light sources, each of the passive light sources including an assembly device, an optical conductor holder and an integrated optical system, the plurality of individual illumination points being located at spatially discrete positions along the one of the escalator and moving walkways and being connected via a respective discrete glass fiber optical conductor with an optical conductor terminal of the at least one central light source, and wherein the at least one central light source includes a lamp positioned within a housing.
2. The illuminating device of claim 1, wherein the lamp within the at least one central light source is one of a pin point and an elongate light source.
3. The illuminating device of claim 1, wherein at least one central light source includes a plurality of active light sources.
4. The illuminating device of claim 1, wherein the lamp within the at least one central light source includes a light reflecting mirror surface for steering light flux to the optical conductor terminal.
5. The illuminating device of claim 1, wherein the passive light sources are arranged at both sides of one of the movable stair and pallet belt and concealed below the hand rails of one of the escalators and moving walkways.
6. The illuminating device of claim 1, wherein the one of the escalators and moving walkways further includes inwardly directed balustrade sides, pedestal plates, outer balustrade cover strips and light outlets, with the passive light sources being received in the light outlets of one of the inward balustrade sides, the pedestal plates and the outer balustrade cover strips, at both sides of one of the movable stair and pallet belt.
7. The illuminating device of claim 1, wherein the one of the escalators and moving walkways further includes a movable stair belt, strand-shaped optical conductor bundles, optical conductor bundle branches, and pedestal channels, with the discrete glass fiber optical conductors, between the at least one central light source and the passive light sources being combined at both sides of the movable stair belt each into a respective one of the strand-shaped optical conductor bundle, the bundle being guided via the branches in the pedestal channels of the corresponding balustrades.
8. The illuminating device of claim 1, including one of a colored and a polarized light for the achievement of special optical effects.
9. The illuminating device of claim 8, wherein emitted light from the at least one central light source is a wide-band light mixture and wherein, for a spectral allocation thereof to said each individual illumination point, a respective corresponding light filter, forming a light exit surface, is provided in the integrated optical systems of each of the passive light sources.
10. The illuminating device of claim 9, wherein the light filters with the integrated optical systems of the passive light sources are flat convex condenser lenses.
11. The illuminating device of claim 8, further including a plurality of active light sources, each of the plurality of active light sources being associated with a discrete spectral range and connected via a corresponding one of the optical conductor terminals, with at least one respective discrete optical conductor being provided in the housing.
12. The illuminating device of claim 8, further including a filter device located in the housing for filtering out certain spectral ranges from light emitted from the at least one central light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94103546A EP0676362B1 (en) | 1994-03-09 | 1994-03-09 | Illumination appliance with optical fibres for escalators or moving walkways |
| EP94103546.1 | 1994-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2142084A1 CA2142084A1 (en) | 1995-09-10 |
| CA2142084C true CA2142084C (en) | 2006-01-03 |
Family
ID=8215754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002142084A Expired - Lifetime CA2142084C (en) | 1994-03-09 | 1995-02-08 | Illuminating device with optical conductors for escalators or moving walkways |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5613758A (en) |
| EP (1) | EP0676362B1 (en) |
| JP (1) | JPH07282606A (en) |
| CN (1) | CN1045575C (en) |
| AT (1) | ATE180463T1 (en) |
| CA (1) | CA2142084C (en) |
| DE (1) | DE59408314D1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ123998A3 (en) * | 1995-10-23 | 1999-02-17 | O And K Rolltreppen Gmbh And Co. Kg | Lighting installation |
| DE19546937C2 (en) * | 1995-10-23 | 1999-08-05 | O & K Rolltreppen Gmbh | Lighting device for passenger conveyors |
| JPH10238054A (en) * | 1997-02-27 | 1998-09-08 | Santo Kagaku:Kk | Nonslipping for stairway |
| US6601985B1 (en) * | 1999-06-25 | 2003-08-05 | Steris Inc. | Medical lighting systems using electrodeless metal halide lamps and fiber optic light pipes |
| US6425676B1 (en) | 1999-09-16 | 2002-07-30 | Martin G. Lyons | Illuminated exterior railing systems |
| DE10013496A1 (en) * | 2000-03-20 | 2001-10-11 | Guido Hasecke | Floor or wall covering made of ceramic, wood, linoleum, plastic, natural or artificial stone |
| WO2002020390A2 (en) * | 2000-09-08 | 2002-03-14 | Ball Ronald H | Illumination system for escalator handrails |
| US6530465B1 (en) * | 2002-04-17 | 2003-03-11 | Inventio Ag | Illuminated escalator combplate |
| JP4401138B2 (en) * | 2003-10-10 | 2010-01-20 | 東芝エレベータ株式会社 | Passenger conveyor |
| US7080921B2 (en) * | 2004-02-13 | 2006-07-25 | Argent Electric, Inc. | Linear light using LEDs |
| CN101210658B (en) * | 2006-12-29 | 2011-05-25 | 通力股份公司 | Lighting system for person transmission facility |
| US20100265736A1 (en) * | 2007-05-18 | 2010-10-21 | Fox Gregory B | Fiber optic enhanced baluster |
| US8286782B2 (en) * | 2008-11-17 | 2012-10-16 | Industrial Technology Research Institute | Information display system for passenger conveying device |
| CN108644655A (en) * | 2018-03-31 | 2018-10-12 | 利辛县力信电力照明科技有限公司 | A kind of corridor lamp |
| CN108566704A (en) * | 2018-03-31 | 2018-09-21 | 利辛县力信电力照明科技有限公司 | A kind of corridor lamp control system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2282050A (en) * | 1941-07-26 | 1942-05-05 | Otis Elevator Co | Moving stairway |
| US2785286A (en) * | 1952-11-08 | 1957-03-12 | Otis Elevator Co | Moving stairway panelling |
| US4394714A (en) * | 1981-03-06 | 1983-07-19 | James Rote | Step lighting system |
| DE8802483U1 (en) * | 1988-02-25 | 1988-04-07 | Thyssen-M.A.N. Aufzüge GmbH, 2000 Hamburg | Escalator or moving walkway |
| CA2017824A1 (en) * | 1989-07-14 | 1991-01-14 | Gerhart Ruelke | Illuminating equipment for the illumination of escalators or travelling walkways |
| DE4209505C1 (en) * | 1992-03-24 | 1993-07-08 | O & K Orenstein & Koppel Ag, 1000 Berlin, De | Safe lighting system for indoor and outdoor escalators - employs optical fibre assembly and single light-source to illuminate escalator steps without need for electrical wiring and weatherseals |
| US5339228A (en) * | 1993-10-13 | 1994-08-16 | Otis Elevator Company | Escalator or moving walkway balustrade illumination |
-
1994
- 1994-03-09 AT AT94103546T patent/ATE180463T1/en active
- 1994-03-09 DE DE59408314T patent/DE59408314D1/en not_active Expired - Lifetime
- 1994-03-09 EP EP94103546A patent/EP0676362B1/en not_active Expired - Lifetime
-
1995
- 1995-02-08 CA CA002142084A patent/CA2142084C/en not_active Expired - Lifetime
- 1995-03-07 US US08/399,589 patent/US5613758A/en not_active Expired - Lifetime
- 1995-03-07 CN CN95100981A patent/CN1045575C/en not_active Expired - Lifetime
- 1995-03-09 JP JP7050105A patent/JPH07282606A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1112516A (en) | 1995-11-29 |
| EP0676362B1 (en) | 1999-05-26 |
| JPH07282606A (en) | 1995-10-27 |
| CN1045575C (en) | 1999-10-13 |
| DE59408314D1 (en) | 1999-07-01 |
| US5613758A (en) | 1997-03-25 |
| ATE180463T1 (en) | 1999-06-15 |
| EP0676362A1 (en) | 1995-10-11 |
| CA2142084A1 (en) | 1995-09-10 |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20150209 |