CN100410703C - Lighting system with a passive phosphorescent light source - Google Patents
Lighting system with a passive phosphorescent light source Download PDFInfo
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- CN100410703C CN100410703C CNB2005800073571A CN200580007357A CN100410703C CN 100410703 C CN100410703 C CN 100410703C CN B2005800073571 A CNB2005800073571 A CN B2005800073571A CN 200580007357 A CN200580007357 A CN 200580007357A CN 100410703 C CN100410703 C CN 100410703C
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- light source
- substrate
- main light
- illuminator
- observation
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Abstract
A lighting system (10) comprising a primary light source (12) for supplying primary light to a viewing environment and a passive light source (14) for supplying light to the viewing environment when the primary light source (12) is unavailable and the viewing environment is dark. The passive light source (14) comprises a substrate (30) carrying a phosphorescent material (34), and this phosphorescent-carrying substrate (30) is positioned between the primary light source (12) and the viewing environment. The substrate (30) has an optical transmittance of at least 50% (whereby primary light from the primary light source (12) can be transmitted therethrough to the viewing environment) and an optical emission of at least 15.0 mcd/m<2> at ten minutes.
Description
Technical field
[0001] as noted, the present invention relates generally to a kind of illuminator with passive or passive phosphorescent light source, more specifically relate to a kind of like this illuminator, it comprises a main light source that chief ray to an environment of observation is provided, and one not having described chief ray or chief ray hour, and the passive phosphorescent light source of light to described watch window is provided.
Background technology
[0002] phosphor material generally is used in the passive light source, so that light to be provided when main light source (for example a, light source and/or daylight that power is provided with electric power) is unavailable.When chief ray was provided to an environment of observation by described main light source, described phosphor material absorbed this chief ray, was not having described chief ray or chief ray hour to launch the light that these absorb then.Described phosphor material is carried by certain type substrate, and this substrate has low optical transmittance usually, take this from the light of described main light source effectively transmission by the there.Therefore, described passive light source can not be positioned between described main light source and the described environment of observation, because the transmission of chief ray will be damaged in this location.
Summary of the invention
[0003] the invention provides a kind of passive light source, wherein said phosphor carries substrate and has high optical transmittance, and consequently described passive light source can be positioned between main light source and the environment of observation, and can not damage the transmission of chief ray.
[0004] more specifically, the invention provides a kind of illuminator, it comprises a main light source that chief ray to an environment of observation is provided, and the passive light source of light to described environment of observation is provided when described main light source is unavailable.Described main light source can be provide power with electric power or daylight.
[0005] described passive light source comprises a substrate, and it carries phosphor material, and is positioned between described main light source and the described environment of observation.Described substrate has at least 50%, at least 60%, at least 70% and/or at least 80% optical transmittance, takes this, and can be transmitted to described environment of observation by it from the chief ray of main light source.Preferably, described substrate has 15.0mcd/m at least
2, 20mcd/m at least
2, 30mcd/m at least
2, 40mcd/m at least
2, 50mcd/m at least
2The optical emitting rate of (ten minutes time).Described phosphor material can be with a kind of density corresponding to expectation optical transmittance and emissivity, is coated on the described substrate or embeds wherein.Described substrate can comprise, for example, and film, cover cap, shell (being bulb), and/or glass pane.
[0006] these and other features of the present invention can fully be described, and will point out especially in the claims.Below description and accompanying drawing provided several illustrative embodiment of the present invention in detail, they have only expressed several in the variety of way that can use the principle of the invention.
Description of drawings
[0007] Fig. 1 is an illuminator according to first embodiment of the invention.
[0008] Figure 1A is the partial enlarged view that the phosphor of illuminator carries substrate among Fig. 1.
[0009] Figure 1B-1E is the vertical view that a phosphor of illuminator carries substrate among Fig. 1.
[0010] Fig. 2 is an illuminator according to second embodiment of the invention.
[0011] Fig. 3 is an illuminator according to third embodiment of the invention.
[0012] Fig. 3 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 3.
[0013] Fig. 3 B-3E is the vertical view that the phosphor of illuminator carries substrate among Fig. 3.
[0014] Fig. 4 is an illuminator according to fourth embodiment of the invention.
[0015] Fig. 4 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 4.
[0016] Fig. 5 is an illuminator according to fifth embodiment of the invention.
[0017] Fig. 5 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 5.
[0018] Fig. 6 is an illuminator according to sixth embodiment of the invention.
[0019] Fig. 6 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 6.
[0020] Fig. 7 is an illuminator according to seventh embodiment of the invention.
[0021] Fig. 7 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 7.
[0022] Fig. 8 is an illuminator according to eighth embodiment of the invention.
[0023] Fig. 8 A is the partial enlarged view that a phosphor of illuminator carries substrate among Fig. 8.
Embodiment
[0024] with reference now to accompanying drawing, at first be Fig. 1, it shows an illuminator 10 according to first embodiment of the invention.Illuminator 10 comprises that provides the main light source 12 of chief ray (solid arrow) to environment of observation, and passive light source 14, when can not to supply chief ray and described environment of observation from light source 12 be dark, passive light source 14 provided light (dotted arrow) to described environment of observation.
[0025] main light source 12 can comprise a light fixture 20 by power supply 22 power supplies and available switch 24 opening/closings.For example, if illuminator 10 comprises an incandescent bulb, electronic package 20 can comprise a filament that is electrically connected on power supply 22.If illuminator 10 comprises a fluorescent light bulb, electronic package 20 can comprise the transformation ballast resistor and the fluorescent tube that are electrically connected on power supply 22.In both of these case, glass or plastic casing 26 (being bulb) can surround illuminace component 20.
[0026] when power supply 22 can be powered, and when switch 24 is in " opening " position, described main light source will provide chief ray.Therefore, when described switch is deliberately placed open position, light source 12 will can not provide chief ray.Additionally and alternatively, when described power supply is not powered (between turnoff time), main light source 12 does not provide light.
[0027] passive light source 14 comprises that a phosphor carries substrate 30.In the embodiment shown in fig. 1, substrate 30 comprises a skim 32, it is made by straight polymer or transparent polymer (clearpolymer) (for example, polycarbonate, PMMA, polyurethane, vinyl compound etc.), and scribbles phosphorescent particle 34 (referring to Figure 1A) in the above.Typically, phosphorescent particle is dispersed in certain straight polymer, so that apply, and can protect pigment or paint to avoid environmental pollution.Phosphorescent particle 34 absorbs and stores the light that shines on it, and when not having ambient light or artificial light rays, will launch phosphorescence so that passive illumination to be provided.Though particle 34 is illustrated as being coated on the upper surface of film 32, can be alternatively or additionally be coated on the lower surface of described film.
[0028] phosphorescent coating can be fifty-fifty or equally is distributed in the surf zone of film 32, so that its optical radiation substantially evenly (referring to Figure 1B).Perhaps, described phosphorescent coating can be distributed on the film 32, with during dark surrounds, by coated marked region and not coated remaining area (referring to Fig. 1 C), perhaps, provide mark (for example, the EXIT of usefulness by not coated marked region and coated remaining area (referring to Fig. 1 D), point to the arrow of outlet, or the like).Another selection is, marked region is cut away from coated film 32, takes this, and than remaining area, marked region will show as dark (referring to Fig. 1 E).
[0029] described substrate is positioned between main light source 12 and the described environment of observation, more specifically, is to be positioned on the upper surface of cover cap 36.Cover cap 36 can be transparent and its purpose only is in order to protect intraware not influenced by dust and to avoid damage, and/or is reason in order to decorate.Perhaps, cover cap 36 can play the effect that makes light diffusion or scattering by combined prism, catoptron, frosting and/or light diffusing particles etc.
[0030] in the illuminator shown in Fig. 1 10, cover cap 36 forms the diapire of described lighting device, and described device also can comprise sidewall 38 and roof 40.Wall 38 and/or wall 34 can provide phosphorescent coating and/or reflectance coating, with further reinforcement passive optical emission.Can recognize in addition,, for the same reason, can be remaining other walls phosphorescent coating and/or reflectance coating are provided if cover cap 36 forms the roof or the sidewall of described lighting device.
[0031] with reference now to Fig. 2, it shows the illuminator 10 according to second embodiment of the invention.In this embodiment, phosphor carries substrate 30 and comprises polymer film 32 (scribbling phosphorescent particle 34 on it) and be positioned on the lower surface of cover cap 36.The same way as of describing with reference to figure 1B-1E above available applies film 32.
[0032] with reference now to Fig. 3, it shows the illuminator 10 according to third embodiment of the invention.In this embodiment, cover cap 36 itself is exactly that phosphor carries on substrate 30 and its and scribbles phosphorescent particle 34 (referring to Fig. 3 A).The implementation of the coating of cover cap 36 can make it possible to provide even illumination (referring to Fig. 3 B) in dark surrounds, perhaps make it possible to with first and second embodiment in film 32 identical modes provide with mark (referring to Fig. 3 C-3E).
[0033] with reference now to Fig. 4, it shows the illuminator 10 according to fourth embodiment of the invention.In this embodiment, cover cap 36 still carries substrate 30 for phosphor, but phosphorescent particle 34 is embedded into or otherwise incorporates wherein (referring to Fig. 4 A) into.For example, if cover cap 36 make with thermoplastic process, so particle 34 can molded, solidify and/or sclerosis before be incorporated in the described fluid composition.Some part of cover cap can be cut be fallen, providing the mark of usefulness in dark surrounds, such as shown in Fig. 3 of the 3rd embodiment E.
[0034] with reference now to Fig. 5, it shows the illuminator 10 according to fifth embodiment of the invention.In these embodiments, lamp housing 26 is exactly that phosphor carries substrate 30, and scribbles phosphorescent particle 34 (referring to Fig. 5 A) on it.This embodiment allows by changing the bulb that surrounds main light source 12 simply, can be illuminator 10 with the conventional illuminator fast transition.
[0035] with reference now to Fig. 6, it shows the illuminator 10 according to sixth embodiment of the invention.In this embodiment, lamp housing 26 is still for phosphor carries substrate, and still, phosphorescent particle 34 is embedded into or otherwise incorporates wherein (referring to Fig. 6 A) into.The same with the cover cap 36 among the 4th embodiment, can introduce particle 34 in the formation stage of shell 26.
[0036] with reference now to Fig. 7, it shows the illuminator 10 according to seventh embodiment of the invention.In this illuminator 10, source of primary light 12 is a daylight, and it shines in the environment of observation by glass pane 36.Therefore, in the time of by day, main light source 12 provides chief ray, and when night, main light source 12 does not provide chief ray.Phosphor carries substrate 30 and comprises a polymer film 32 (referring to Fig. 7 A) that scribbles phosphorescent particle 34 on it.Described coating can with realize shown in Figure 1B-1E and at the identical mode of the described mode of first embodiment of the invention.
[0037], shows illuminator 10 according to eighth embodiment of the invention with reference now to Fig. 8.Main light source 12 still is a daylight, and it shines in the environment of observation by glass pane 36.In this embodiment, glass pane 36 is that phosphor carries substrate 30, and phosphorescent particle 34 is embedded into or otherwise incorporates wherein (referring to Fig. 8 A) into.
[0038] in above-mentioned each embodiment, phosphor carries substrate 30 and has at least 50%, at least 60%, at least 70% and/or at least 80% optical transmittance, take this, can pass substrate/film 30/32 from the chief ray of main light source 12 and be transmitted to environment of observation.Optical transmittance is meant the light of described main light source emission and passes the ratio that described phosphor carries the light of substrate.Optical transmittance 0% is corresponding to the substrate that does not allow optical transmission, and optical transmittance 100% is corresponding to complete transparent substrate.
[0039] in addition, in above-mentioned each embodiment, 15.0mcd/m at least when phosphor carries substrate 30 and has ten minutes
2, 2mcd/m at least 60 minutes times
2Emissivity, and/or its 20.0mcd/m at least when having ten minutes
2, 2.8mcd/m at least 60 minutes times
2Emissivity.These emission levels are that to satisfy IMO and ASTM standard that the regulation emergency visibility requires necessary.At least 30.0mcd/m when substrate 30 can have ten minutes
2, 40.0mcd/m at least ten minutes times
2, and/or 50.0mcd/m at least ten minutes the time
2Emissivity.
[0040] phosphor material 34 can be a kind of phosphorescent phosphors, and it comprises with MAl
2O
4The matrix of expression, wherein M is calcium, strontium or barium, perhaps wherein M is the magnesium that is activated by calcium, strontium, barium and/or europium etc.These phosphorescent phosphors demonstrate excellent photostability and have extremely long persistence characteristic.United States Patent (USP) the 5th, 424, No. 006 disclosure and description this phosphorescent phosphors, incorporate all disclosures of this patent into this paper at this with way of reference.United States Patent (USP) the 5th, 770 discloses another kind of phosphor or phosphor with strong lasting persistence characteristic in No. 111, also incorporates all disclosures of this patent into this paper with way of reference at this.By using strong and/or lasting phosphor, when the substrate of coating among the first, second, third, the 5th and the 7th embodiment, and when described phosphor being incorporated in the backing material of the 4th, the 6th and the 8th embodiment, can use the low-density phosphor.Low-density is corresponding to high-transmission rate, can realize height (perhaps acceptable at least) emissivity thus and can too not sacrifice transmissivity.
[0041] when using main light source 12, described chief ray transmission is carried substrate 30 by described phosphor, and by cover cap 36, arrives environment of observation.At chief ray between the operating period, phosphorescent particle 34 " is filled light or is filled energy (charged) ", and when not using main light source 12 and described environment of observation when being dark, the light of being stored is emitted from substrate 30 like this, and, arrive described environment of observation by cover cap 36.Be noted that the location of substrate 30, allow the chief ray that is exposed to of phosphor material 34 maximums, so that the light that is filled maximization.
[0042] for example, consider one 16 feet * 16 feet do not have outside window and have the room of four 2 feet * 4 feet fluorescent apparatus.According to the present invention, can substitute existing diffusing globe in the lighting device with the substrate that carries phosphor material (for example being coated in the panel inboard) (for example pure or transparent (clear) plexiglas panel).In the time of a few minutes, described phosphor material will be saturated after opening light source.When turn-offing light source, described phosphor material will continue emission up to six hours.Emission decay that it should be noted that described phosphor material is very consistent to the adaptation of dark with human eye, and described thus material can maintain with brightness and make an appointment with half an hour.Especially, for example, in the moment that fluorescent apparatus is closed, the occupant still can read fine and closely woven printed matter.At least in preceding ten minutes, the occupant can withdraw from a room safely, because recognize barrier at an easy rate.After 30 minutes, may become is difficult to see the object of low contrast (such as the black extending wire on the grey carpet).
[0043] similarly, product of the present invention can be used in such as in the standby luminous sign used in the advertisement of public places such as airport, hotel or the information demonstration, so that passive illumination to a certain degree to be provided between turnoff time.
[0044] people can recognize now, the invention provides a kind of passive light source, wherein said phosphor carries substrate and has high optical transmittance, and consequently described passive light source can be positioned between main light source and the environment of observation, and can too not sacrifice the transmission of chief ray.Some preferred embodiment illustrates and describes though The present invention be directed to, be apparent that, and by reading and understand this instructions, those skilled in the art can find to be equal to and tangible modification and improvement.The present invention includes all such modification and improvement, and only limit by the scope of claims.
Claims (10)
1. an illuminator (10), it comprises a main light source (12) and a passive light source (14), wherein said main light source provides chief ray to environment of observation, when unavailable and described environment of observation was dark when described main light source (12), described passive light source (14) provided light to described environment of observation;
Wherein said passive light source (14) comprises a substrate (30) that carries phosphor material (34);
Wherein said substrate (30) is positioned between described main light source (12) and the described environment of observation; And
Wherein said substrate (30) has at least 50% optical transmittance, takes this, and can pass from the chief ray of described main light source (12) and wherein be transmitted to described environment of observation.
2. illuminator according to claim 1 (10), wherein, after described phosphor material (34) filled light by described main light source (12), described substrate (30) had the emissivity that satisfies the emergency visibility requirement.
3. illuminator according to claim 1 (10), wherein, after described phosphor material (34) fills light by described main light source (12), 15.0mcd/m at least when described substrate (30) has ten minutes
2At least 2mcd/m during with 60 minutes
2Emissivity.
4. illuminator according to claim 1 (10), wherein said main light source (12) be with electric power provide power and/or be daylight.
5. illuminator according to claim 1 (10), wherein said substrate (30) are cover caps (36) that is positioned between described main light source (12) and the described environment of observation.
6. illuminator according to claim 1 (10), wherein said main light source comprise light fixture (20), and wherein said substrate (30) is a shell (26) that surrounds described light fixture (20).
7. illuminator according to claim 1 (10), wherein said substrate (30) are glass panes (36) that is positioned between described main light source (12) and the described environment of observation.
8. illuminator according to claim 1 (10), wherein said substrate (30) scribbles described phosphor material (34).
9. illuminator according to claim 1 (10), wherein said phosphor material (34) are embedded into or incorporate in the described substrate (30).
10. according to each described illuminator (10) among the claim 1-8, wherein said phosphor material (34) is distributed on the described substrate (30), to provide the mark of usefulness in dark surrounds.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55259304P | 2004-03-12 | 2004-03-12 | |
| US60/552,593 | 2004-03-12 | ||
| US60/619,778 | 2004-10-18 | ||
| US60/623,016 | 2004-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1930502A CN1930502A (en) | 2007-03-14 |
| CN100410703C true CN100410703C (en) | 2008-08-13 |
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ID=37859560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800073571A Expired - Fee Related CN100410703C (en) | 2004-03-12 | 2005-02-10 | Lighting system with a passive phosphorescent light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100410703C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH713382A1 (en) * | 2017-01-24 | 2018-07-31 | Smolsys Ag | Illuminant. |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780462A (en) * | 1972-10-20 | 1973-12-25 | Canrad Precision Ind | Luminous indicators involving phosphors |
| US4420898A (en) * | 1982-03-01 | 1983-12-20 | Moses John R | Flat emergency exit sign utilizing an electro-illuminescent lamp |
| US4466208A (en) * | 1982-07-30 | 1984-08-21 | Logan Jr Emanuel L | Emergency exit sign utilizing an electro-luminescent (EL) lamp and a brightness monitor |
| US4903172A (en) * | 1987-09-11 | 1990-02-20 | Schoeniger Karl Heinz | Display construction |
| US5424006A (en) * | 1993-04-28 | 1995-06-13 | Nemoto & Co., Ltd. | Phosphorescent phosphor |
| US5770111A (en) * | 1995-04-14 | 1998-06-23 | Kabushiki Kaisha Tokyo Kagaku Kenkyusho | Phosphor with afterglow characteristic |
| US5880476A (en) * | 1996-05-23 | 1999-03-09 | Fuji Photo Film Co., Ltd. | Radiation image storage panel and radiation image reading method |
| US6069440A (en) * | 1996-07-29 | 2000-05-30 | Nichia Kagaku Kogyo Kabushiki Kaisha | Light emitting device having a nitride compound semiconductor and a phosphor containing a garnet fluorescent material |
| CN1264679A (en) * | 1999-02-23 | 2000-08-30 | 因温特奥股份公司 | Elevator chassis with emergency lighting device |
| CN2566409Y (en) * | 2002-08-26 | 2003-08-13 | 郑华明 | Built-in driving source energy-storage luminlus emergency marker lamp |
-
2005
- 2005-02-10 CN CNB2005800073571A patent/CN100410703C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780462A (en) * | 1972-10-20 | 1973-12-25 | Canrad Precision Ind | Luminous indicators involving phosphors |
| US4420898A (en) * | 1982-03-01 | 1983-12-20 | Moses John R | Flat emergency exit sign utilizing an electro-illuminescent lamp |
| US4466208A (en) * | 1982-07-30 | 1984-08-21 | Logan Jr Emanuel L | Emergency exit sign utilizing an electro-luminescent (EL) lamp and a brightness monitor |
| US4903172A (en) * | 1987-09-11 | 1990-02-20 | Schoeniger Karl Heinz | Display construction |
| US5424006A (en) * | 1993-04-28 | 1995-06-13 | Nemoto & Co., Ltd. | Phosphorescent phosphor |
| US5770111A (en) * | 1995-04-14 | 1998-06-23 | Kabushiki Kaisha Tokyo Kagaku Kenkyusho | Phosphor with afterglow characteristic |
| US5880476A (en) * | 1996-05-23 | 1999-03-09 | Fuji Photo Film Co., Ltd. | Radiation image storage panel and radiation image reading method |
| US6069440A (en) * | 1996-07-29 | 2000-05-30 | Nichia Kagaku Kogyo Kabushiki Kaisha | Light emitting device having a nitride compound semiconductor and a phosphor containing a garnet fluorescent material |
| CN1264679A (en) * | 1999-02-23 | 2000-08-30 | 因温特奥股份公司 | Elevator chassis with emergency lighting device |
| CN2566409Y (en) * | 2002-08-26 | 2003-08-13 | 郑华明 | Built-in driving source energy-storage luminlus emergency marker lamp |
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| Publication number | Publication date |
|---|---|
| CN1930502A (en) | 2007-03-14 |
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