GB2516614A - Photoluminescent devices suited for a broad range of applications - Google Patents

Abstract

A means to illuminate a building, structure or vehicle comprises an extruded photoluminescent strip having a fixing means which may include an adhesive tape backing or a mechanical fixing such as a threaded member. The strip may be flexible, may emit light of any colour , may have a flat rear surface and have a fibre optic cable therein. The cable may have a power source and may introduce light from a remote source The strip may have a groove or score line running lengthways (Figure 3) the groove being provided to allow the strip to flex or bend. The strip may be shaped to fit convex or concave curves and corners (Figure 3b & 5). The strip may have two upstanding sides and the device may then be integrated with a skirting board, a dado rail, a handrail or balustrade. The device may be provided with a means to integrate with tongue and groove flooring. The device may used on a vehicle including a ship or an aircraft.

Description

"Photolurninescent devices suited for a broad range of applications"

Field of Invention

the invention relates generally to photoluminescent devices, and more particularly to phololuminescent devices which can he easily and readily insLalled practically in!wiLh almosL any structure (buildings, ships, modular siructures, prefabs, rigs, platforms, stages, mines, lunnels, subterranean networks and struclures, outdoor pathways, vehicle, crafi, etc) in order lo provide a light source during low level lighting or darkness.

Background of Invention

A number of photoluminesccnt devices are known in prior arts tbr providing aesthetic features to a building or an ambience. Also the photoluminescent devices are known in prior I 5 arts which are used for emergency exits.

None of the known devices provides a solution for installing the devices ubiquitously, easily and readily in any structure in such a way as to be inconspicuous, innocuous to a particular ambience under normal light.

There is no prior arL which was invented wiih Lhe purpose of being applied universally in everyday environmenis such LhaL failsafe lighting may become an achievable and affordable goal for all and not jusi for commercial or public buildings where such lighiing is mandatory. Such a product would, by definition, have to be inculcated seamlessly with siandard decor. Good design is essential for the promulgation of safety devices in an effort to have them integrated into our everyday lives, thereby making our living and working environments safer. These safety devices can also he more: they can be habitual lighting sources and aesthetic lighting sources as well as aesthetic and architectural features in their own right. this is why the device is designed to be seamlessly harmonized into practically all structures, from its ability to sit with covings, architraves and skirtings, to being included commonly in tongue and grooved structures such as floors, paneling, tiles, etc and as glazing beading for windows and doors.

Energy saving and energy oplimisation are essential due lo costs and availahilily of energy and lighi; and it is for this reason that photoluminesceni strips, coupled with smart use of energy, will result in very low cost lighting for environments. For example, with the advent of large warehousing units and large internel server centres where vast areas are under cover hut are not in habitual use these devices will facilitate arge energy savings. They are also perfect fir outdoor pathway marking.

As the photoluminescence dement of the device has a long decay time (typically 8 hours), this means that by introducing light energy in short burst to the photoluminescent device such that the device has some charge in it, the device may then emanate its low energy light for a substantial time after this. The result is a low cost light source with a high degree of fail-safcncss.

Light may be propagated to the photoluminescent aspect of the device by use of light fibre, from whence lighi is transporled along Ihe photoluminescent device by use of attenualing (lossy strings) so as to distribute the light along the length of photoluminescent device, or by use of solar cells 10 capture ambient light for slorage and distribulion in the phololuminescent device, or by use of battery power lo pulse light to the photoluminescenl device and by use of electrical transformers to power lighi source.

Where electrical energy is used to create a light source, it means we can use that light source for short amounts of time (e.g. 5 minutes) to create a long-lasting, low energy light form our photoluminescent device.

All the devices in prior arts come with cumbersome & inflexible procedure installation and removal. Many of the known devices require invasive fixing such as screws, clips, nuts, bolts to fix to a substratum or to a main body. Also all of the known apparatus require an inherent substratum element or/and number of assembled elements and hence are very expensive as far as material and installation costs are concerned, invasive fixings (screws, boIls, dc) can pose serious dangers, especially in a home for hidden wires and pipes. This aspect makes them cost restrielive for most abodes and businesses.

Another major drawback of the devices in the prior arts is the limitation in their universality of application. In other words, they can only be fitted in their exclusive actuality and only in certain areas, as they lack mechanical flexibility of use and usage. Also devices in prior arts are limited to the surfaces and strata which they can be affixed to. Most of those conventional devices are of a fixed and determined length and structure, giving them a determined use.

Also all of the known devices have a potential to he inherent hazards themselves, such as trip hazards, snag hazards, and microbiological hazards. Many of the conventional devices are intrinsically unsafe for explosive atmosphere application.

None of the known dcviccs are dcsigncd to provide acsthctic value to an ambience and not to disturb/spoil the original look of an ambience. They are non-aesthetically designed i.e., they have visual protuberances and arc unsightly, and hcnce are unsuitable for common environments which are designed to he pleasing to the eye.

Also the known devices are not suitable for environments where anti-microbial properties are essential.

Most of the devices demand extensive and elaborate preparation, tools and skills for installation. Usually these devices require special preparation of surface and a flat or homogenous surface to receive fixing.

Since the devices known in the prior arts are fixed to substrate with boils and other invasive materials, their reusability is minimal. Once used, their design and appearance get disturbed and distorted. In case of reuse, they arc not as good as the new ones as far as look and adaptability is concerned.

it is now apparent that none of the photoluminescent devices do not have dual purpose, i.e., maintaining look of ambient environment and providing light source at the same time. The manufacturing process/procedures of the known devices in the prior arts are complex and time consuming. None of the conventional arts is considered for habitual use.

Therefore, it is an object of the present invention to overcome ihe drawbacks of the devices in the existing arts descrihed hereinabove.

Statement of tnvention

Accordingly, the invention provides photoluminesccnt devices which can he easily, readily and safely installed practically in/with almost any structure/place (buildings, ships, modular structures, prefabs, rigs, platforms, stages, mines, tunnels, subterranean networks and structures, outdoor fields, vehicle, craft, etc) in order to provide a light source during low level lighting or darkness.

One of the advantages of the present invention is that the devices are aesthetically designed to bc inconspicuous and innocuous during ambient light, and arc only noticcablc in low level lighl or dark situations.

Another advantage of Ihe devices is thai they are aesthetically designed to be attractively used in everyday architecture and he visually pleasing or inconspicuous or innocuous as desired. Since they are aesthetically designed, they adhere seamlessly to skirtings and architravcs, and may he incorporated into fixtures and fittings, furniture, appliances, picture frames, skirtings, borders, m&dings, pillars, conduits, outdoor trim for poles, structures, advertising media, road and path markings, etc. Also they can he aesthetically designed such as to he used for cosmetic and artistic reasons such as covering poor workmanship in a joint or covering over cracks, damp or discolouration.

One of the advantages is that they arc designed to have the ability to he uscd on a wide range of structures such as land, sea and air, e.g. buildings, subterranean networks, outdoor structures, marinas, dccking, strcct furniture, electrical acccss boxes on streets, scaffolding poles, footpaths, marine structurcs, ships & boats, rigs and platforms, aircraft, ctc without allering or damaging the interior and exterior siruclures on which it is fixed or allached.

Another advaniage is that they are designed such thai ii may he used as an aestheiic lighi source as well as being a eusiomary and habiiual lighi source and more imporianily as an emergency failsafe light source.

One of the advantages of these devices is that they are designed to he attached or fitted to any surface, he it flat, curved or spatially curved where a photoluminescent device would provide a practical, cosmetic, artistic or aesthetic advantage, eg walls, ceilings, floors, stairs, doors, shelves, cabinets, windows, yachts, caravans, vehicles, toys, apparel, helmets, pathways etc. Another advantage is where a porous surface prevents the use of the self -adhesive strip the device is configured so as to easily accept an appropriate mastic.

Another advantage of the invcntion is that the flat photolunilnescent strip has a score running lengthwise which gives ii the ability to fold easily and precisely, so thai ii may he applied to corners and curves including spatial curves. Such strip is designed practically to fit onto any 2 plane corner with an angle lying between 10 and 350 degrees. And also such score faciliiaies the folding of the plastic without distortion, as withoui the score the memory of the plasiic would either pull or push the resultani folded shape back to its original flat self.

Another advantage of the invention is that the corner trim with the hollow hack may he flexed along its axis to allow it he fixed to corners which are not exactly at 90 degrees.

One of the advantages of these devices is that is they may he easily fitted and installed without any specialized knowledge, training or tools. Anyone can fit them without need of nuts, holts, screws or other fixing agents.

Another advantage is that they are designed to be easily retro-fittcd.

Another advaniage is thai they can be packed as rolls for ease of iransporiaiion and insiallaiion/applicaiion. As they come in rolls they can be of indeterminate length. They may also be coiled. So as far as storage and transporL is concerned, ii is very much cosi effective and is a greaL practical aid in its fitting.

Another advaniage is thai the devices may be used as a temporary rope Lype lighi withoui being attached to anything for the sake of marking a path or area, and rolled up again after use.

Another advantage is that they designed to he resilient, strong and durable while still being very flexible with a degree of rigidity to give it workable substance, giving the product the ability to be used on a range of surfaces and strata and environments not possible with previous arts. Such features allow them to be used in mines, caves, tunnels, natural and man-made subterranean structures and listed buildings.

Another advantage is that due to the nature of the product it can be easily cut to produce practically any shape allowing the negaiive space to be used as the indicaiors. The devices can be mitered with a standard scissors, contributing to its aesthetic, artistic or cosmetic application.

Another advanLage is thai they can he used in buildings where invasive fittings are forbidden or prohihitivdy expensive, e.g., aquaria, glass walls, walls where there maybe pipes or cable hidden behind, etc Another advantage of the device is that its surfaces can he configured for attachment to a support with no invasiveness.

Another advantage because of the inherent nature of the device is that it allows it to he strong enough to take screws and fixings while still maintaining its flexibility. Such feature allows it to be used in mines, caves, tunnels, natural and manmade subterranean structures and listed buildings where its self adhesive nature may be unsuitable, unnecessary, superfluous or inadequaie. As listed buildings by naLure need a minimum of disrupiive or invasive iechniques for emergency lighting and also in cerLain conditions the walls may he of rough stone and so an alternative fixing solution may have to be used instead of the self adhesive strip.

Another advantage is that the product in one aspect also has a lip along its outer edges. This lip has at least 5 purposes: a) it protects the adhesive from cleaning agents and the environment, h) It prevents the product from being a trip hazard when on the floor or a snag hazard, e) It reduces ability for micro biota, flora, fauna and dust to nestle in or on product therefore making it cleaner and pro-active in its cleanliness, d) The exterior visible curve of the lips presents a homogenous finish to the strip which diffuses light and is a significant contribution to its aesthetic finish, e) It is easy to clean (this is important as washability is a criteria used in many regulations tbr safety lighting e.g., New York Building Safety Code 6-Another advantage is reusability. These devices are designed to be reusable. By virtue of its IS flexible nature and resilient constitution the strip may he puflcd from its position (say for purposes of painting the wall) and a mastic or adhesive applied to the strip and it then re-stuck. The corner piccc has a channel along its back for this purpose.

Another advantage is that due to the simplicity of the product it can be manufactured to meet ATEX regulations (9419/EC Directive).

Another advantage is that the device is made to integrate into tongue and groove constructions thereby allowing failsafe lighting to become part of the construction process without intcrkring in the process itself.

Another advantage of this embodiment is that it may act as an expansion joint in tongue and groove flooring.

Another advantage is that by using the device as a glazing beading, exit doors and windows may incorporate a failsafe light without any noticeable visual or aesthetic change and without compromising functional performance.

Another advaniage is thaI by use of the lossy string light may be iransporied and attenuated in areas where no power or lighi source exists.

Another advantage is thai by use of these phololuminescent lighl devices with a charging light source attached, energy hills may he kept to a minimum where arge amounts of light are not needed, eg warehouses, long communication tunnels, outdoor pathways at night-time, remote areas, etc. Another advantage is that hy manipulating the diameter (ri in Fig. lSc) and frequency (x in Fig iS) of the smaller fibre in the lossy string, rates and lengths of attenuation can be varied to suit the environment.

Another advantage is thai by use of solar cells, micro wind and wave energy as a power source, long lighting times are available for short bursts of energy so in effect it is creating a lighi slorage and release system. This also allows use where conventional AC power is noi available.

Another advaniage of the inveniion is thai the device can he made anlimicrohial by using chemical such as silver ion additive. Combined wiih the functionalily of the lips it makes ii suitable for hospitals, dean rooms, nursing homes etc. Different features/aspects of Invention: in one of the embodiments, the device contains a photoluminescent capability due to presence of photolumineseent chemical pigments known in existing arts for providing a light source in a thw level light environment.

in another embodiment the device has got a self adhesive backing for attachment to a surface or substratum within its environment.

in another embodimeni of the invention, the device is rohusi such thai ii may accommodaie a screw, boll or fixing Lo be used to mount it in siiuaiions where us own self-adhesive ahiliiy may be unsuitable, unnecessary, superfluous or inadequate while still maintaining ils flexibility.

In anoiher embodiment of the invention, the device is designed in the shape of a coving or mo'ding with lips running longitudinafly for the purposes previously mentioned, and with a grooved concave hack which will allow a wire or cahle run beneath ft as well as providing it with a degree of flexibility.

in another embodiment, some degree of flexibility axially is provided by the device to fit into or along a range of corners and curves.

in another embodiment, this coving or molding may bc without lips.

in another embodiment, this coving or molding may bc without thc grooved concavc back.

in anothcr cmbodiment, this coving or molding may havc a rangc of front faces; the faces may be ilaL or curved, ranging from convex to concave and cyma.

In a further emhodimenL the coving piece comes in a roll, making iL more economical to store, transport & distribute as well as easier to apply.

In another emhodiment the invention may he made from a single exfrusion, co-extrusion or mulliple extrusions to facilitate the shape and tbr making the covinglmolding designs.

in another embodiment the invention has a lip running longitudinally along each outer edge.

This lip is manufactured such that it lies/touches or presses against the surface to which the invention is adhering to. The lips function is meant to protect the adhesive, prevent the product from being a trip or snag hazard, rcducc the ability for micro biota, flora, fauna and dust to ncstle in or on the product thcrcfore making it clcaner and pro-active in its cleanliness, make Ihe exLerior visible curve of the lips presenL a homogenous finish to the strip which is a significani conLribuiion lo iLs aestheLic finish and also make iL easy to clean.

-10 -In anoiher embodimenL a length of the invention may he siuck hack-k-back on an identical length of iiseif such thai it forms a phoioluminescent strap or rope.

In a further embodiment the invention may he easily cut with a scissors to he cuber miiered for fitting around light switches, sockets, boxes etc or to create any desired shapes without losing its integrity or ease of working.

In a further embodiment the invention can he easily fitted to existing structures (retrofitted) or may be built in as part of a new structure.

in a further embodiment the invention is manufactured such that it complies with Atmosphôrcs Explosives (ATEX) dircctives so as to allow photolumincscent lighting be used in those environments.

in one embodimeni, ihe device is shaped io form an expansion or inseriionjoini in one embodiment, ihe device is shaped V form an expansion or inseriion joinL and made from a plastic that will compress or expand with surrounding pressure.

in one embodiment, the joint is configured for use with a floor, decking, wafi, ceiling or any paneling having tongue and groove joints.

in one embodiment, the joint has an opposed tongue and groove.

in one embodiment, the device is configured as a beading, seal or gasket for a door or window, fur example to indicate use of the door or window as an exit or for cosmetic appearance.

in onc embodiment, the device is configured to fit within panes of double glazing.

-11 - In a furiher embodiment of the invention it is designed Lo be manufaclured using anti-microbial plastics so Ihal iL can he used in environmenis where anti-microbial traiLs are essential or desired.

In a thrther embodiment, the device can he made antimicrobial by using chemical such as silver ion additive.

In another embodiment, the photoluminescent aspect has a light attenuating string running along its length.

in another embodiment, the photoluminescent aspect has a light string running along its length.

in another embodiment, the photolumineseent aspect has a light attcnuating fibre (lossy) running along us length.

in anoLher embodiment, it has a unit capable of generating a lighL source so as Lo charge the phololuminescent aspeci.

in another embodiment, the power source may he a fibre optic caHe bringing light to the distal end of the attenuation string.

The invention will he more clearly understood from the following description of an embodiment thereof, given by way of an example only, with reference to the accompanying drawings, in which: Figure 1 is a head on view in which the extruded photoluminescent body is fixed or held on a surfacc/substratum.

Figure lb is a Lop view in which fixLures and a directional arrow are shown.

-12 -Figure 2 is a side on view in which the exLruded phoiolumineseenL body withouL lips is fixed or held on a surface /suhslralum with the help of self adhesive tape or/and a range of fittings.

Figure 3 is a head on view of the extruded photoluminescent body with a score/groove running longitudinally through it.

Figure 3b is an isometric view of embodiment when f&ded out and a side view of embodiment when folded in.

Figure 4 is a head on view of the extruded photolumineseent body without lips with a score/groove running longitudinally through it.

Figure 5 is a cross-sectional view of the co-extruded device with the photolumineseenL body wilh concave hack in between Ihe device and the surfaces of the substratum.

Figure Sa is an isometric view of the co-extruded device with the phololumineseeni body with concave back in heLween the device and the surfaces of the substratum.

Figure 6 is a cross-sectional view of a co-extruded device in the Cavetto shape consisting of a photolumineseent face.

Figure 6b is a head on view of single-extruded photoluminescent device in the Cavetto style.

Figure 7 is a head on view of a co-extruded photolunilnescent device in the Ovolo shape with concave back running longitudinally along at the back in between the device and the surface of the substratum.

Figure 8 is an isometric view of a flat phoLoluminescent strip showing the lips as a feaLure of Lhe phoLoluminescent exLrusion.

-13 -Figure 9 is a Lop view looking direcily upon the phololuminescent strip face eul in a manner/fashion so as to provide contrast in a low level light situation.

Figure 10 is top view looking directly upon the photolumineseent device in typical use, wherein the flat strip is cut to create an arrow shape fhr use to highlight an exit in a low level light situation.

Figure 11 shows the photoluminescent device in typical use where an electric light switch is surrounded in an aesthetic fashion by the mitered coving, this 112 coving is also shown against a typical doorway architrave. the 113 strip is shown running along the wall close to the floor, the 112 strip is shown running along the top of a typical 115 skirting board and also in Lhe corner of a 116 window recess where ii sils against the edge of the 117 window's frame. this window is used as an escape route.

Figure 12 shows a 122 coving embodiment in use, silting flush against a 124 wall and on Lop of a 121 skirting board. The space creaLed by Lhe 123 groove in the interior of the embodimeni shows where a lelephone/fibre optic cable may run. The miLer joini in Ihe corner shows the ease with which Lhe aesihelic elemeni of the embodiment is easy to create.

Figure 13 demonstrates an embodiment (fig 3,fig 4) in a typical use. A 134 cabinet lies in an escape pathway to an 135 exit and so is marked with 131 fo'ded along the outer edge of the 131 cabinet. 131 is also shown folded inwardly so as to fit in the corner of the wall. On top of an 133 architectural border is an 132 embodiment of the invention.

Figure 14 demonstrates the invention as a habitual light source where a person walks at night from his bed to a lavatory. The 142 embodiment laying on top of a 143 skirting provides ample ambieni lighi for ihe person to walk safely Lo his desLinaiion and if he so desires, an 141 embodimeni of the invention highlighis ihe electric lighi swiich for the lavaicry.

-14 -Figure 15 demonsftaies the embodimenL as an arehileclural aesthetic aid where a glass and steel structure uses an IS I embodiment to create an aesthetic/cosmetic trim heiween the 153 glass and 152 steel base. The 151 embodiment serves Ihe furiher purpose in low level light conditions by highfighting the styling of the structure as well as being an aesthetic/cosmetic feature and may also possibly he an habitual light source and a safety lighting feature.

Fig 16 is an isometric view of tongue and grooved floor boards. l0

Fig. 16b is an end vie\v and a perspective view of an expansion joint or tongue and groove insert device Figure 17 is a facing view of a door with glass and glazing beading showing.

Figure 18 is a side view of a lossy (attenuating) light carrying fibre.

Figure 18b is an isomeiric view of a lossy (aiLenuating) light carrying fibre.

Figure 18c is an end view of the lossy (attenualing) light carrying fibre.

Figure 19a is an illustration of how solar cell and battery arrangement produces electricity to create a fight source which illuminates the lossy (attenuating) fibre in the photolumineseent strip.

Figure 20 shows a transformer used to power a light source which illuminates the lossy (attenuating) fibre running longitudinally in the photoluminescent strip.

Figure 21 is a transformer connected to a current and in turn connected to a light string which runs longitudinally through the photolumineseent strip.

-15 -

Detailed Description of the Invention

Referring 10 the Fig. 1, there is shown an elongaled extruded pho1ouminescent strip 1 with lips 2 at longitudinal edges pressing against the substratum 4 which can he a wall or floor of a building or which may he any even solid flat surface. A thin double-sided adhesive tape 3 is employed to fix or attach the strip I to substratum 4.

Referring to Fig lb, there is shown an elongated extruded photolumineseent strip 1 with a printed arrow 12 for directional purposes and the light diffusing edge of the upper part of the lips 15. the head of a screw 5 bolt 51 and u-pin 52 is shown as possible manners of fixing the strip 1 to different types of sub-strata.

Referring to the Fig. 2, there is shown an elongated extruded photolumineseent strip 1 without lips. A thin double-sided adhesive tape 3 is employed 10 fix or attach the strip 1 10 substratum 4. A screw 5, bolt 51 and u-pin 52 arc shown as possible manners of fixing Ihe slrip to differenl lypes of sub-straLa.

Referring 10 the Fig. 3, there is shown an elongaled extruded phololuminescent strip 1 with lips 2 at distal longitudinal ends. A thin douHe-sided adhesive tape 3 is employed to fix or attach the strip I to substratum 4. The elongated extruded photoumineseent device I can he made concave within/inside to facilitate accurate folding. The strip I has a score 6 running longitudinally as an axis such as to facilitate accurate fblding and without distortion of the strip I Referring to Fig 3h, there is shown an isometric view of an elongated extruded photolumineseent strip Ifolded away from the score 6 with a thin double-sided adhesive tape 3 employed to fix or attach the strip 1 and the light diffusing edge of the upper part of the lips 15. A side view an elongated extruded photolumineseent strip 1 is shown folded back on ihe score 6 and wilh a thin double-sided adhesive tape 3 showing with the lips 2 standing proud of the tape 3. -16-

Referring lo the Fig. 4, there is shown an elongated extruded photoluminesceni strip 1 without lips. A Lhin double-sided adhesive Lape 3 is employed lo fix or attach Ihe slrip 1 with substratum 4. The dongated extruded photoluminescent strip I has a score 6 running longiLudinally as an axis such as lo faeiliiale accurale folding and withoul disLorLion of the strip I. Referring to Fig. 5, there is shown a co-extruded photoluminescent strip 7 which is on the top of extruded substrata 8 which can he fixed or attached to main substrata with double-sided adhesive tape 3. A concave back 9 is created between the extruded substrata 8 and corner of two walls (main substrata) for passage of cable underneath it and to allow a certain amount of flexibility along its axis and application of mastic.

Referring to Fig Sa there is shown an isometric view of a co-extruded phololuminesceni strip 7 which is on top of an extruded substrata 8 which can be fixed to main substrata with double sided adhesive tape 3. A concave back 9 is created heiween the extruded substrata 8 and corner of two walls (main substrata) for passage of cable underneath it and to allow a cerLain amounL of flexibility along its axis. The lips 2 can be seen Lo stand proud of the self adhesive tape 3 and thereby press against the main substrata. The upper parL of the lips 15 diffuse lighL by means of their roundness.

Referring to Fig. 6, there is shown a co-extruded photoluminescent strip 7 which is on the top of extruded substrata 8 which can he fixed or attached to main substrata with two double-sided adhesive 3. This is full bodied without concave back as shown in Fig. 5.

Referring to 11g. 6b, there is shown a pigment carrying single extruded strip 1 lwherein there is lip 2 and double-sided adhesive tape 3.

Referring to Fig. 7, there is shown a co-extruded photoluminescent strip 7 which is on the top of extruded substrata 8 which can be fixed or attached to main substrata with double-sided adhesive 3. The lips 2 can he seen to stand proud of the self adhesive tape 3 and thereby press against the main substrata. A concave hemisphere-shaped back 9 is created between the extruded substrata 8 and corner of two walls (main substrata) for passage of -17 -cable or wires underneath ii and to allow a certain amounL of flexibility along its axis as well as faciliLating Ihe applicalion of a mastic.

Referring to Fig. 8, there is shown an isomelric view of a flal phololuminescent slrip 1 with lips 2 as a feature of the photoluminescent extrusion. The curve of the body I 5 which is necessary to create the lips 2 demonstrates the light diffusion which occurs on the outer edges. Symbol or text 12 may he used as an indicator of direction or a command. Self adhesive strip 3 is empthyed to fix or attach the photoluminescent strip on flat solid surface.

Referring to Fig. 9, there is shown a top view looking directly at the photoluminescent strip 1 which is cut to two reciprocal moieties 14 to introduce a break/space 13 which acts as contrast in a low level light situation. the said photolumineseent strip is attached to the main substratum 4 such as wall of any building with double-sided adhesive tape 3.

Referring Lo Fig. 10, Ihere is shown a practical applicaLion of photoluminescenl strip/extruded body 1 which is cut at three points to produce the strip 104 as shown in Fig. 9 when mounted on a wall 105. An arrow shape 101 is also shown as a construclion of three pieces of photoluminescenl slrip 1 and the aesthelic properties of the extruded phololuminescent coving 102 is demonslrated silting againsl the architrave 103 of the doorway. The extruded photoluminescent strip is also employed to create a mitered decorative highlighting shape 104 around the door hanWe. The extruded photolumineseent strip I 04 is also seen a wall mounting and as a floor mounting.

Referring to Fig. II, there is shown a practical appflcation wherein electric lights switch III surrounded in an aesthetic fashion by the mitered coving 112 constructed from strip 1. this coving I I 2, constructed from strip I 22, is also shown against a typical doorway architrave 114. the strip 113 is shown running along the wall close to the floor. The strip 112 is shown running along the top of a typical skirting board 115 and also in the corner of a 116 window recess where it sits against the edge of the 117 window's frame. This window is used as an escape route.

-18 -Referring lo Figure 12, there is shown a coving 122 in use, sitting flush againsl a wall 124 and on lop of a skirting hoard 121. The space created by the groove 123 in the interior of the coving shows a tdephonc/fihrc optic cable running beneath it and whcrc a mastic may he applied if necessary. The miler joinl 125 in the corner shows the ease with which the aesthetic clement of thc embodiment is casy to crcatc.

Figurc 13 dcmonstratcs an embodiment (fig 3, fig 4) in a typical usc. A 134 cahinct lies in an cscapc pathway to an 135 cxit and so is marked with I 3 I folded outwardly along the outer edge of the 131 cabinet. 131 is also shown folded inwardly so as to fit in the corner of the wall. On top of an 133 architectural border is an 132 embodiment of the invention.

Figurc 14 dcmonstratcs thc invention as an habitual light sourcc whcrc a pcrson walks at nighL from his bed 10 a lavalory. The 142 embodiment laying on Vp of a 143 skirling providcs amplc ambicnt light for thc pcrson to walk safcly to his dcstination and if hc so desires, an 141 embodimeni of the invenlion highlighis the electric light swilch for the lavatory.

Figure 15 demonstrates the embodiment as an archiLectural aestheiic aid where a glass and sled siruciure uses an 151 embodimenL to create an aesthetic/cosmeiic trim heiween the 153 g'ass and 152 steel base. The 151 embodiment serves the thrthcr purpose in low level light conditions by highlighting the styling of the structure as well as hcing an aesthetic/cosmetic feature and may also possibly he an habitual light source and a safety lighting feature.

Fig. I 6 & I 6h demonstrates the typical arrangement for a tongue 164 and groove 161 flooring timbers 162. the extruded photoluminescent device 165 fits into gap 163.

]Jig.17 shows a door 174, having a frame 171 and glass 173. Ihe frame 171 includes a glazing beading 172 of photolumincsccnt material to provide an enhanced appcarancc and with the inbuilt photolumincsccnt light source, they now acts as highlighted safety exits. In other embodimenis a window can have luminous beading or gaskels. There may he rods inserled in-beiween the layers of glass in a decoralive format to ad as a safely sign for egress.

-19 -Referring lo Fig. 18, there is shown a side view of a iossy (altenualing) lighi carrying fibre, comprising the carrying fibre 182 (made of plastic) with a helically wound fibre 181 (made of plastic) embedded mb ii. 181 and 182 have different refractive indices. X the distance along 182 of one comp'ete wind of 181.

Referring to Fig. I Sb, there is shown an isometric view of a iossy (attenuating) light carrying fibre, comprised of the carrying fibre 182 (made of plastic) with a helically wound fihre IS! (made of plastic) embedded into it. 183 is simply the end view of the termination of 181 Referring to Fig 18e, there is shown an end view of the lossy (attenuating) light carrying fibre. Where rI is the radius of the embedded fibre and r2 is the radius of the carrying fibre and r2>rl.

Referring to Fig 19, there is shown a solar cell and battery arrangement 192 which produces and stores electricity to create a light source 193 which illuminates the lossy (attenuating) fibre 191 in the photciuminescent strip 1 Referring to Fig 20, there is shown a transformer 200 connected by 201 to a current is used to power a light source 193 which illuminates the lossy (attenuating) fibre 191 running longitudinally in the photoluminescenb strip 1.

Referring to Fig 21, there is shown a transformer 200 connected by 201 to a current and in turn connected 210 to a light string 192 which runs longitudinally through the phoboluminescent strip 1.

Claims (43)

1. IClaims: 1. A photoluminescent device comprising: a) an extruded photoluminescent strip; and b) fixing or attaching means such as double-sided adhesive tape or glue or mastic or bolt or screw or U-pin or combination of the said means for fixing or attaching the strip to substratum like wall or floor of a building.
2. 2 A photoluminescent device as claimed in Claim I, wherein the photoluminescent strip is either rigid or flexible.
3. 3. A photoluminescent device as claimed in Claim, wherein the photoluminescent strip is of any colour.
4. 4. A photoluminescent device as claimed in Claim 1, wherein the photoluminescent strip has flat back surface.
5. 5. A photoluminescent device as claimed in Claim 1, wherein the photoluminescent s trip may be with or without lips running longitudinally along outer edges.

   IS
6. 6. A photoluminescent device as claimed in Claim 1, wherein the photoluminescent strip has antimicrobial feature.
7. 7. A photoluminescent device as claimed in Claim 1, wherein the photoluminescent strip has light attenuating string or fibre along its length.
8. 8. A photoluminescent device as claimed in Claim I and 7, wherein a fibre optic cable is employed for bringing light from a power source to the attenuating string or fibre.

   *
9. 9. A photoluminescent device comprising: * a) an extruded photoluminescent strip having a score running longitudinally in the middle ofit; and b) fixing or attaching means such as double-sided adhesive tape or glue or mastic or * 25 bolt or screw or U-pin or combination of the said means for fixing or attaching the strip to substratum like wall or floor of a building. * * * * **
10. 10. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip is flexible.IV 2!
11. 11. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip is of any colour.
12. 12. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip has flat back surface.
13. 13. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip may be with or without lips running longitudinally along outer edges.
14. 14. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip has antimicrobial feature.
15. 15. A photoluminescent device as claimed in Claim 9, wherein the photoluminescent strip has light attenuating string or fibre along its length.
16. 16. Aphotoluminescent device as claimed in Claim 9 and 15, wherein a fibre optic cable is employed for bringing light from a power source to the attenuating string or fibre.
17. 17. A photoluminescent device having three sided strip comprising: a) a co-extruded photoluminescent layer on the top of one side which is above extruded non-photoluminescent substrata; b) two other sides of the strip which are perpendicular to each other, arid are meant to face and engage with two surfaces of a building/structure which are perpendicular to each other; and c) double-sided adhesive tape or glue for fixing the strip to a corner of a building/structure.
18. 18. A photoluminescent device as claimed in Claim 17, wherein the photoluminescent device is flexible and can be manufactured as decorative architrave in a roll format.
19. 19. A photoluminescent device as claimed in Claim 17, wherein the co-extruded photoluminescent layer is of any colour.
20. 20. A photoluminescent device as claimed in Claim 17, wherein the co-extruded ::::; photoluminescent layer may be of any shape or design.
21. 21. A photoluminescent device as claimed in Claim 17, wherein the photoluminescent device may have a space of any shape or design at the corner where two sides of the non-photoluminescent substrata meet behind the photoluminescent layer.
22. 22. A photoluminescent device as claimed in Claim 17, wherein the two surfaces of the non-photoluminesceni substrata which are supposed to face and engage with surfaces of a building Jstructure are flat.
23. 23. A photoluminescent device as claimed in Claim 17, wherein the co-extruded photoluminescent layer may be with or without lips running longitudinally along outer edges.
24. 24. A photoluminescent device as claimed in Claim 17, wherein the photoluminescerit device has antimicrobial feature.
25. 25. A photoluminescent device as claimed in Claim 17, wherein the co-extruded photoluminescent layer has light attenuating string or fibre along its length.
26. 26. A photoluminescent device as claimed in Claim 17 and 25, wherein a fibre optic cable is employed for bringing light from a power source to the attenuating string or fibre.
27. 27. A photoluminescent device as claimed in Claim 17, wherein co-extruded IS photoluminescent layer may be concave, convex or plane, or any other shape or design.
28. 28. An extruded photoluminescent strip having a groove and tongue running longitudinally in the middle of the strip but opposite to each other, and which can be embedded in a tongue and groove flooring or panelling.
29. 29. A photoluminescent device having three sided strip comprising a single extruded photoluminescent strip and fixing means such as double-sided adhesive tape or glue 0: * for fixing the strip to a corner of a building/structure.

    * * 0* *
30. 30. A photoluminescent device as claimed in Claim 29, wherein the two other si&s of the strip are perpendicular to each other, and are meant to face and engage with two surfaces of a building/structure which are perpendicular to each other.
31. 31. A photoluminescent device as claimed in Claim 29, wherein the photoluminescent c S.., . . . device is flexible and can be manufactured as decorative architrave in a roll format.
32. 32. A photoluminescent device as claimed in Claim 29, wherein the single extruded photoluminescent strip is of any colour.I )
33. 33. A photoluminescent device as claimed in Claim 29, wherein the side which is supposed to face outward during use may be of any shape or design.
34. 34. A photoluminescent device as claimed in Claim 29, wherein the photoluminescent device may have a space of any shape or design at the corner where two other sides of the single extruded strip meet.
35. 35, A photoluminescent device as claimed in Claim 29, wherein the two surfaces of the single extruded strip which are supposed to face and engage with surfaces of a building /structure are flat.
36. 36. A photoluminescent device as claimed in Claim 29, wherein the single extruded photoluminescent strip may be with or without lips running longitudinally along outer edges.
37. 37. A photoluminescent device as claimed in Claim 29, wherein the photolumineseent device has antimicrobial feature.
38. 38. A photoluminescent device as claimed in Claim 29, wherein the single extruded photoluminescent strip has light attenuating string or fibre along its length.
39. 39. A photoluminescent device as claimed in Claim 29, wherein a fibre optic cable is employed for bringing light from a power source to the attenuating string or fibre.
40. 40. A photoluminescent device as claimed in Claim 29, wherein the side of the single extruded photoluminescent strip which is supposed to face outward during use may be concave, convex or plane, or any other shape or design.
41. 41. A light carrying fibre comprising two clear plastics where one plastic is embedded in *. . . . the other in a spiral fashion such that when a light source is placed at its chstal end, 5S09*' * the frequency and relevant thickness of the embedded plastic coupled with the refractive indices of the two materials cause the regular dissipation of light along its length.

    Sn.
42. 42. Photoluminescent devices as claimed in claims 1, 9, 17 and 28, 29, wherein the ::::; devices are manufactured to imbed aesthetically in their environment when utilized.
43. 43. A photolumineseent devices as claimed in Claims I to 29, wherein the light carrying fibre as claimed in Claim 29 is employed for providing light to the devices.