EP1376007B1 - Lighting device - Google Patents
Lighting device Download PDFInfo
- Publication number
- EP1376007B1 EP1376007B1 EP03014108A EP03014108A EP1376007B1 EP 1376007 B1 EP1376007 B1 EP 1376007B1 EP 03014108 A EP03014108 A EP 03014108A EP 03014108 A EP03014108 A EP 03014108A EP 1376007 B1 EP1376007 B1 EP 1376007B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- source
- light
- screen
- reflecting layer
- degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010408 film Substances 0.000 claims description 20
- 230000005855 radiation Effects 0.000 claims description 10
- 239000002861 polymer material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000011104 metalized film Substances 0.000 claims description 4
- 239000011022 opal Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
Definitions
- the present invention relates to a lighting device designed to constitute a highly attractive multifunction furnishing element.
- Interior lighting devices which have a light source housed inside a casing closed by a diffusing screen made of appropriate material to diffuse the light into the environment.
- the diffusing screen normally has a visible surface of a given colour and appearance when the light source is off, and which, when the light source is on, substantially maintains the same appearance, even though, obviously, illuminated by the light source.
- FR 2576249 discloses a lighting device wherein the diffusing screen is made of a translucent polymer support bonded to a thin wood panel; so, when the source is off, the visible outer surface of the device has the appearance of the wooden wall; and when the source is on, the screen substantially maintains the same wood appearance, even though illuminated.
- an insulator lighting device as claimed in Claim 1.
- the lighting device provides for entirely new aesthetic and functional effects, by assuming different appearances depending on whether the light source is on or off, and also combines the functions of a lamp with those of a mirror : when the source is off the visible outer surface of the screen defines a mirrorlike reflecting surface, whereas, when the source is on, the outer surface of the screen is transparent to the light emitted by the source and provides for illuminating the environment in which the device is installed.
- the possibility of adjusting the brightness of the source also provides for gradually altering the appearance of the screen to obtain fading, semitransparency, partial reflection effects, etc.
- the reflecting layer may advantageously be made using a so-called “sun-shield” or “sun-control” film used in the building industry, for automotive glazing, and in optics (for producing mirror lenses for sunglasses).
- such films are defined by layers of polymer materials (typically polyester) incorporating a metallized layer (e.g. of vapourized aluminium) to produce a typically striking silvery appearance with a pronounced mirror effect, and are capable of reflecting up to 80% of incident solar energy (the typical value of reflected visible light being around 60%), and of absorbing practically all UV and IR radiation (typically, up to about 99% of UV radiation, and up to about 80% of IR radiation).
- polymer materials typically polyester
- a metallized layer e.g. of vapourized aluminium
- Such films are characterized by a "semireflecting" effect : when a glazed element fitted with a film of this type is placed between two environments of different light intensity, the glazed element is transparent on the lower light intensity side, and is substantially mirrorlike on the higher light intensity side.
- room glazing in normal daylight conditions, is fully transparent from the inside, but nontransparent with a mirror surface from the outside.
- predominant interior lighting e.g. artificial light turned on in the room
- the glazing is transparent from the outside.
- Films of this sort have never been used in the lighting industry, and in particular in an application in accordance with the present invention.
- using such films in lighting devices in accordance with the invention ensures - given the high UV and, above all, IR radiation absorption typical of these films - the emission of a cold light with substantially no "hot" infrared component (as stated, these films absorb up to 80% of IR radiation and up to 99% of UV radiation).
- the semireflecting effect typical of sun-shield films may be achieved in other ways, e.g. by vacuum deposition of thin metallized films on a substrate of polymer material; which substrate may even be defined by the outer surface itself of the plate of light-diffusing material.
- the optical effect of depositing these films on the plate is equivalent to applying a sun-shield film.
- Number 1 in Figure 1 indicates as a whole a lighting device, in particular an interior lighting device, designed, in the purely non-limiting example shown, for wall mounting.
- Device 1 comprises a casing 2 having a concave body 3 comprising an inner cavity 4 and a front opening 5.
- a seat 6 is defined inside cavity 4 to house one or, as in the example shown, two light sources 7 defined, for example, by respective (known) linear fluorescent lamps side by side and parallel to each other. Sources 7 are housed inside seat 6 next to a back wall 8 of body 3, and are supported by respective (known) lamp-holders 9. For the sake of simplicity, the electric connections (known) connecting sources 7 to a power source are not shown.
- Body 3 has a surface 10 defining seat 6 and facing and partly surrounding sources 7 to define a diffusing reflector 11 for diffusing the light emitted by sources 7.
- surface 10 is substantially impervious to light, and is defined, for example, by an opaque white surface to retain the light emitted by sources 7 inside seat 6 and direct it towards opening 5.
- a screen 15 is fixed to body 3 (in any known manner not described or illustrated for the sake of simplicity), faces sources 7, and is fitted to a peripheral edge 16 of body 3 bounding opening 5, so as to close opening 5.
- screen 15 comprises a plate 17 made of light-diffusing material, and having an inner surface 18 facing seat 6 and, therefore, sources 7 in use, and an outer surface 19 facing the environment for lighting in use and therefore located on the opposite side to sources 7.
- plate 17 is made of opal or translucid polymer material, e.g. polymethacrylate or similar material, having a degree of reflection (reflectance) of visible light preferably ranging between approximately 40% and 60%, and a degree of transmission (transmittance) of visible light ranging between approximately 60% and 40%.
- opal or translucid polymer material e.g. polymethacrylate or similar material, having a degree of reflection (reflectance) of visible light preferably ranging between approximately 40% and 60%, and a degree of transmission (transmittance) of visible light ranging between approximately 60% and 40%.
- Plate 17 is shaped to comprise a flat, e.g. rectangular, front wall 21 substantially parallel to back wall 8 of body 3; and two lateral walls 22 extending perpendicularly from respective lateral edges of front wall 21.
- a mirror-effect reflecting layer 23 defining a visible surface 24 of screen 15 and, therefore, of device 1.
- Reflecting layer 23 comprises two opposite faces, and is such that, when the faces are subjected to different light intensities, the face exposed to the higher light intensity has the appearance of a substantially mirrorlike reflecting surface, and the face exposed to the lower light intensity has the appearance of a substantially transparent surface.
- Reflecting layer 23 (and hence the whole of screen 15 defined by plate 17 and reflecting layer 23) produces a mirror effect when sources 7 are turned off, whereas, when sources 7 are turned on, reflecting layer 23 (and screen 15 as a whole) is substantially transparent to the light emitted by sources 7.
- reflecting layer 23 has a degree of reflection (reflectance) of visible light of over approximately 70%, and a degree of transmission (transmittance) of visible light of less than approximately 30%, and is capable of absorbing over 70% (preferably about 80%) of IR radiation, and over 90% (preferably about 99%) of UV radiation.
- screen 15 as a whole has a degree of reflection of visible light of over approximately 50%, and a degree of transmission of visible light of approximately 20% or less.
- screen 15 has a visible-light reflectance of around 60%, and visible-light transmittance of around 20%.
- Reflecting layer 23 is defined by a metallized film 25 of polymer material, comprising two or more layers of polymer material (e.g. polyester) incorporating at least one metallized layer (e.g. vapourized aluminium).
- Film 25 has a silvery appearance with a pronounced mirror effect.
- film 25 may, for example, be of the so-called “sun-shield” or “sun-control” type used in the building and automotive industries.
- ScotchtintTM films produced by 3M in particular RE20SIARL, RE15SIX or equivalents, may be used.
- other films of similar characteristics in terms of light, and in particular visible light, reflectance and transmittance may also be used.
- Film 25 defining reflecting layer 23 is applied to surface 19, for example, by gluing with an adhesive layer 26 of suitable (known) adhesive.
- surface 19 of plate 17 to which reflecting layer 23 is applied is substantially smooth. In a variation, however, surface 19 is rough or otherwise not perfectly smooth.
- film 25 is also perfectly smooth to produce a homogeneous mirror effect and, when sources 7 are turned on, a homogeneous lighting effect.
- any surface irregularities due, for example, to roughness of surface 19 or unevenness of adhesive layer 26) produce different effects (glare, colour reflections, etc.), so that both the surface finish of surface 19 and the way in which the adhesive attaching film 25 is applied to surface 19 can be used to obtain special effects of the visible surface 24 of screen 15.
- reflecting layer 23 may be defined by one or more metallized films applied directly to surface 19 (e.g. by a known vacuum deposition process) or to a substrate of polymer material in turn fixed to surface 19.
- Device 1 also comprises a system 27 (known and therefore not described for the sake of simplicity) for adjusting the light intensity emitted by sources 7, and so obtaining further special lighting effects.
- a system 27 (known and therefore not described for the sake of simplicity) for adjusting the light intensity emitted by sources 7, and so obtaining further special lighting effects.
Description
- The present invention relates to a lighting device designed to constitute a highly attractive multifunction furnishing element.
- Interior lighting devices are known which have a light source housed inside a casing closed by a diffusing screen made of appropriate material to diffuse the light into the environment. The diffusing screen normally has a visible surface of a given colour and appearance when the light source is off, and which, when the light source is on, substantially maintains the same appearance, even though, obviously, illuminated by the light source.
- For example, FR 2576249 discloses a lighting device wherein the diffusing screen is made of a translucent polymer support bonded to a thin wood panel; so, when the source is off, the visible outer surface of the device has the appearance of the wooden wall; and when the source is on, the screen substantially maintains the same wood appearance, even though illuminated.
- In view of the constant search, in the furnishing industry, for new aesthetic effects, it is an object of the present invention to provide a lighting device permitting aesthetic and functional effects not obtainable from known devices, and which, in particular, assumes different appearances depending on whether the light source is on or off.
- According to the present invention, there is provided an insulator lighting device as claimed in
Claim 1. - The lighting device according to the invention provides for entirely new aesthetic and functional effects, by assuming different appearances depending on whether the light source is on or off, and also combines the functions of a lamp with those of a mirror : when the source is off the visible outer surface of the screen defines a mirrorlike reflecting surface, whereas, when the source is on, the outer surface of the screen is transparent to the light emitted by the source and provides for illuminating the environment in which the device is installed.
- The possibility of adjusting the brightness of the source also provides for gradually altering the appearance of the screen to obtain fading, semitransparency, partial reflection effects, etc.
- The reflecting layer may advantageously be made using a so-called "sun-shield" or "sun-control" film used in the building industry, for automotive glazing, and in optics (for producing mirror lenses for sunglasses).
- As is known, such films are defined by layers of polymer materials (typically polyester) incorporating a metallized layer (e.g. of vapourized aluminium) to produce a typically striking silvery appearance with a pronounced mirror effect, and are capable of reflecting up to 80% of incident solar energy (the typical value of reflected visible light being around 60%), and of absorbing practically all UV and IR radiation (typically, up to about 99% of UV radiation, and up to about 80% of IR radiation).
- Such films are characterized by a "semireflecting" effect : when a glazed element fitted with a film of this type is placed between two environments of different light intensity, the glazed element is transparent on the lower light intensity side, and is substantially mirrorlike on the higher light intensity side. When fitted with such films, therefore, room glazing, in normal daylight conditions, is fully transparent from the inside, but nontransparent with a mirror surface from the outside. Conversely, with predominant interior lighting (e.g. artificial light turned on in the room), the glazing is transparent from the outside.
- Films of this sort have never been used in the lighting industry, and in particular in an application in accordance with the present invention. In addition to the aesthetic-functional effects mentioned, using such films in lighting devices in accordance with the invention ensures - given the high UV and, above all, IR radiation absorption typical of these films - the emission of a cold light with substantially no "hot" infrared component (as stated, these films absorb up to 80% of IR radiation and up to 99% of UV radiation).
- Alternatively, the semireflecting effect typical of sun-shield films may be achieved in other ways, e.g. by vacuum deposition of thin metallized films on a substrate of polymer material; which substrate may even be defined by the outer surface itself of the plate of light-diffusing material. The optical effect of depositing these films on the plate is equivalent to applying a sun-shield film.
- A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
- Figure 1 shows a schematic exploded view in perspective of a lighting device in accordance with the invention;
- Figure 2 shows a section of a detail of the Figure 1 device.
-
Number 1 in Figure 1 indicates as a whole a lighting device, in particular an interior lighting device, designed, in the purely non-limiting example shown, for wall mounting. -
Device 1 comprises acasing 2 having aconcave body 3 comprising an inner cavity 4 and afront opening 5. Aseat 6 is defined inside cavity 4 to house one or, as in the example shown, twolight sources 7 defined, for example, by respective (known) linear fluorescent lamps side by side and parallel to each other.Sources 7 are housed insideseat 6 next to aback wall 8 ofbody 3, and are supported by respective (known) lamp-holders 9. For the sake of simplicity, the electric connections (known) connectingsources 7 to a power source are not shown. -
Body 3 has asurface 10 definingseat 6 and facing and partly surroundingsources 7 to define a diffusingreflector 11 for diffusing the light emitted bysources 7. For which purpose,surface 10 is substantially impervious to light, and is defined, for example, by an opaque white surface to retain the light emitted bysources 7 insideseat 6 and direct it towards opening 5. - A
screen 15 is fixed to body 3 (in any known manner not described or illustrated for the sake of simplicity), facessources 7, and is fitted to aperipheral edge 16 ofbody 3 bounding opening 5, so as to closeopening 5. - With reference also to Figure 2,
screen 15 comprises aplate 17 made of light-diffusing material, and having aninner surface 18 facingseat 6 and, therefore,sources 7 in use, and anouter surface 19 facing the environment for lighting in use and therefore located on the opposite side tosources 7. - More specifically,
plate 17 is made of opal or translucid polymer material, e.g. polymethacrylate or similar material, having a degree of reflection (reflectance) of visible light preferably ranging between approximately 40% and 60%, and a degree of transmission (transmittance) of visible light ranging between approximately 60% and 40%. -
Plate 17 is shaped to comprise a flat, e.g. rectangular,front wall 21 substantially parallel toback wall 8 ofbody 3; and twolateral walls 22 extending perpendicularly from respective lateral edges offront wall 21. - To
surface 19 ofplate 17 is applied a mirror-effect reflecting layer 23 defining avisible surface 24 ofscreen 15 and, therefore, ofdevice 1. Reflectinglayer 23 comprises two opposite faces, and is such that, when the faces are subjected to different light intensities, the face exposed to the higher light intensity has the appearance of a substantially mirrorlike reflecting surface, and the face exposed to the lower light intensity has the appearance of a substantially transparent surface. - Reflecting layer 23 (and hence the whole of
screen 15 defined byplate 17 and reflecting layer 23) produces a mirror effect whensources 7 are turned off, whereas, whensources 7 are turned on, reflecting layer 23 (andscreen 15 as a whole) is substantially transparent to the light emitted bysources 7. - More specifically, reflecting
layer 23 has a degree of reflection (reflectance) of visible light of over approximately 70%, and a degree of transmission (transmittance) of visible light of less than approximately 30%, and is capable of absorbing over 70% (preferably about 80%) of IR radiation, and over 90% (preferably about 99%) of UV radiation. - By virtue of reflecting
layer 23 andplate 17,screen 15 as a whole has a degree of reflection of visible light of over approximately 50%, and a degree of transmission of visible light of approximately 20% or less. Preferably,screen 15 has a visible-light reflectance of around 60%, and visible-light transmittance of around 20%. -
Reflecting layer 23 is defined by ametallized film 25 of polymer material, comprising two or more layers of polymer material (e.g. polyester) incorporating at least one metallized layer (e.g. vapourized aluminium).Film 25 has a silvery appearance with a pronounced mirror effect. - As stated,
film 25 may, for example, be of the so-called "sun-shield" or "sun-control" type used in the building and automotive industries. - By way of example, Scotchtint™ films produced by 3M, in particular RE20SIARL, RE15SIX or equivalents, may be used. Obviously, other films of similar characteristics in terms of light, and in particular visible light, reflectance and transmittance may also be used.
-
Film 25 defining reflectinglayer 23 is applied tosurface 19, for example, by gluing with anadhesive layer 26 of suitable (known) adhesive. In a preferred embodiment,surface 19 ofplate 17 to which reflectinglayer 23 is applied is substantially smooth. In a variation, however,surface 19 is rough or otherwise not perfectly smooth. - If
surface 19 is perfectly smooth andadhesive layer 26 is even,film 25 is also perfectly smooth to produce a homogeneous mirror effect and, whensources 7 are turned on, a homogeneous lighting effect. Conversely, any surface irregularities (due, for example, to roughness ofsurface 19 or unevenness of adhesive layer 26) produce different effects (glare, colour reflections, etc.), so that both the surface finish ofsurface 19 and the way in which theadhesive attaching film 25 is applied tosurface 19 can be used to obtain special effects of thevisible surface 24 ofscreen 15. - Alternatively, reflecting
layer 23 may be defined by one or more metallized films applied directly to surface 19 (e.g. by a known vacuum deposition process) or to a substrate of polymer material in turn fixed tosurface 19. -
Device 1 also comprises a system 27 (known and therefore not described for the sake of simplicity) for adjusting the light intensity emitted bysources 7, and so obtaining further special lighting effects. - Clearly, changes may be made to the device as described and illustrated herein without, however, departing from the scope of the enclosed claims.
Claims (13)
- An interior lighting device (1) comprising at least one light source (7), and a screen (15) facing the source (7) and comprising a plate (17) made of light-diffusing material, the device being characterized in that said screen (15) comprises a mirror-effect reflecting layer (23) located on a surface (19) of the plate (17) on the opposite side to the source (7) to define a visible surface (24) of said screen (15), said visible outer surface (24) of the screen (15) defining a mirrorlike reflecting surface when the source (7) is off, whereas, when the source (7) is on, said outer surface (24) of the screen (15) being transparent to the light emitted by the source (7) and providing for illuminating the environment in which the device (1) is installed.
- A device as claimed in Claim 1, characterized in that said reflecting layer (23) comprises two opposite faces, and is such that, when said faces are subjected to different light intensities, the face exposed to the higher light intensity has the appearance of a substantially mirrorlike reflecting surface, and the face exposed to the lower light intensity has the appearance of a substantially transparent surface.
- A device as claimed in Claim 1 or 2, characterized in that said reflecting layer (23) has a degree of reflection (reflectance) of visible light of over approximately 70%, and a degree of transmission (transmittance) of visible light of less than approximately 30%.
- A device as claimed in one of the foregoing Claims, characterized in that said screen (15) has a degree of reflection (reflectance) of visible light of over approximately 50%, and a degree of transmission (transmittance) of visible light of approximately 20% or less.
- A device as claimed in one of the foregoing Claims, characterized in that said reflecting layer (23) is capable of absorbing over approximately 70%, and preferably about 80%, of IR radiation, and over 90%, and preferably about 99%, of UV radiation.
- A device as claimed in one of the foregoing Claims, characterized in that said reflecting layer (23) is defined by a metallized film (25) of polymer material.
- A device as claimed in Claim 6, characterized in that said film (25) comprises layers of polymer material, and at least one metallized layer.
- A device as claimed in one of the foregoing Claims, characterized in that said plate (17) is made of opal or translucid, preferably polymer, material.
- A device as claimed in Claim 8, characterized in that said plate (17) is made of material having a degree of reflection (reflectance) of visible light ranging between approximately 40% and 60%, and a degree of transmission (transmittance) of visible light ranging between approximately 60% and 40%.
- A device as claimed in one of Claims 1 to 9, characterized in that the surface (19) of said plate (17) having said reflecting layer (23) is substantially smooth.
- A device as claimed in one of Claims 1 to 9, characterized in that the surface (19) of said plate (17) having said reflecting layer (23) is rough.
- A device as claimed in one of the foregoing Claims, characterized by comprising a seat (6) for housing said source (7); said seat (6) having an opaque surface facing the source (7).
- A device as claimed in one of the foregoing Claims, characterized by comprising a system (27) for adjusting the light intensity emitted by said source (7),
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2002MI001393A ITMI20021393A1 (en) | 2002-06-25 | 2002-06-25 | LIGHTING DEVICE |
ITMI20021393 | 2002-06-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1376007A2 EP1376007A2 (en) | 2004-01-02 |
EP1376007A3 EP1376007A3 (en) | 2004-05-19 |
EP1376007B1 true EP1376007B1 (en) | 2006-11-08 |
Family
ID=11450080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03014108A Expired - Lifetime EP1376007B1 (en) | 2002-06-25 | 2003-06-23 | Lighting device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1376007B1 (en) |
DE (1) | DE60309538T2 (en) |
ES (1) | ES2276999T3 (en) |
IT (1) | ITMI20021393A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964194A (en) * | 1975-01-22 | 1976-06-22 | Gugeler William G | Changeable color display device |
US4041302A (en) * | 1976-07-06 | 1977-08-09 | General Motors Corporation | Dual color taillamp |
GB2108256B (en) * | 1981-10-09 | 1985-09-11 | Wipac Dev Limited | Vehicle lamp |
FR2576249A1 (en) * | 1985-01-21 | 1986-07-25 | Mora Michel | Transluscent wall having a layer of wood |
US6497946B1 (en) * | 1997-10-24 | 2002-12-24 | 3M Innovative Properties Company | Diffuse reflective articles |
FR2814531B1 (en) * | 2000-09-25 | 2002-12-06 | Valeo Vision | LIGHTING OR SIGNALING DEVICE FOR AN IMPROVED-LOOKING MOTOR VEHICLE |
-
2002
- 2002-06-25 IT IT2002MI001393A patent/ITMI20021393A1/en unknown
-
2003
- 2003-06-23 DE DE60309538T patent/DE60309538T2/en not_active Expired - Lifetime
- 2003-06-23 ES ES03014108T patent/ES2276999T3/en not_active Expired - Lifetime
- 2003-06-23 EP EP03014108A patent/EP1376007B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ITMI20021393A0 (en) | 2002-06-25 |
EP1376007A3 (en) | 2004-05-19 |
ES2276999T3 (en) | 2007-07-01 |
EP1376007A2 (en) | 2004-01-02 |
DE60309538T2 (en) | 2007-10-04 |
ITMI20021393A1 (en) | 2003-12-29 |
DE60309538D1 (en) | 2006-12-21 |
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