EP2314907A1 - Illumination device - Google Patents
Illumination device Download PDFInfo
- Publication number
- EP2314907A1 EP2314907A1 EP10013759A EP10013759A EP2314907A1 EP 2314907 A1 EP2314907 A1 EP 2314907A1 EP 10013759 A EP10013759 A EP 10013759A EP 10013759 A EP10013759 A EP 10013759A EP 2314907 A1 EP2314907 A1 EP 2314907A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diffuser body
- diaphragm
- diffuser
- lighting lamp
- leds
- 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.)
- Withdrawn
Links
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Classifications
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
- F21V11/12—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of slot type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
-
- 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
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Herein proposed is lighting lamp (1) comprising: a diffuser body (2), lighting means (6) housed in said diffuser body (2), a supporting base (3), circuital components, the lamp being characterised in that the diffuser body (2) is made in form of a tubular diffuser, which has, at least partly on its length, openings (5) for the outgoing of the light produced by said lighting means (6), and that the lighting means (6) are preferably formed by LEDs, which are supported on un supporting element (7) which axially extend in the tubular diffuser body (2), and that provided is a transparent or opaque screening diaphragm (8), which is associated to said diffuser body (2) and covering said openings (5) for the outgoing of the light. The lamp may be obtained as a floor, desk, wall lamp or the like.
Description
- The present invention refers to a lighting lamp according to the preamble of claim 1.
- As known, lighting lamps are known in various embodiments. Besides the tubular lighting lamps, lamps with incandescence or halogen bulbs have the common characteristic of comprising a diffuser body, lighting means housed in said diffuser body, hanging means or a supporting base, as well as the required circuital components.
- The diffuser body may be provided transparent, or opaque, for example bell-shaped, delimiting the outgoing light beam, wherein the lamp is freely visible.
- Such lamps may have hanging means, for example in form of a chain or tube which can be hooked to a hook fixed onto the ceiling or, for example in case of floor lamps or desk lamps they may have a base, wherein interposed between said base and diffuser body are supporting elements, for example in form of a tube, for example curved (in case of floor lamps or desk lamps) or several rods or tubes articulated to each other like arms, with springs or counterweights interposed, for the desired positioning of the diffuser body (for example in the case of desk lamps).
- A variation of the intensity of the luminous flux may occur, with halogen lamps, generally with two different voltages, for example of 25 and 50 W, using a transformer, generally housed in the base. The intensity of the light flux may also be varied through a converter or trimmer.
- The known and various embodiments of lamps, headlights and downlights with lighting means in form of incandescence, halogen, fluorescent and low consumption lamps reveal practical limits.
- For example lamps with a light dimmer practically absorb the same amount of power regardless of the set variation. A variation of the position of the emitted light beam requires an articulated support for the diffuser body and, as a consequence, higher reproduction costs with respect to a fixed diffuser body.
- The diffuser body generally has only one large opening for the outgoing of the light. Furthermore, providing for a plurality of exposed lamps arranged spaced on a strip-like support - such solution being definitely suitable for industrial lighting, shops, shop-windows and the like, but less suitable for household lighting where less strong and preferably more diffused lighting is required - for the diffusion of light along a relevant length is also known.
- Therefore, according to the present invention, there arises the need for providing a lighting lamp capable of allowing overcoming various drawbacks of the prior art lamps.
- The abovementioned task is met, according to the invention, by means of a lighting lamp having the characteristics of claim 1.
- Further developments of the proposed lighting lamp form an object of the dependent claims.
- Several important advantages are obtained by means of the proposed lighting lamp. Firstly, by providing for a tubular diffuser body extended length-wise allows providing the openings for the outgoing of the light according to the desired number, arrangement and shape. Production of diffusers as base diffusers may thus be performed in a rational and modular manner, with the ensuing reduction of the costs of production.
- The production of the openings for the outgoing of the light may be provided in a simple, controlled and quick manner through laser beam cutting.
- The lamps may be assembled in a simple, automatable and quick manner given that the lamp is made up of a limited number of components. Preferably, advantageously used as lighting means are LEDs, which currently have good lighting performance, occupy little space and are easily available, for example, on a tape-like support, for example a fabric, which in turn can be easily fixed on a stiff strip-like support, for example made of metal or synthetic material, which can be easily inserted or fixed in the tubular diffuser body. Said stiff support may divide, for example diametrically, the tubular body into two chambers, in which the LEDs are arranged towards the chamber with the openings for the outgoing of the light. This allows improving the lighting performance and providing the possibility of obtaining specific lighting effects, such solution being enhanced by using LEDs emitting light of respectively different colours. The use of LEDs also allows eliminating the prior art transformers and allows power supply by means of conventional AC adapters which can be inserted directly into the power supply sockets.
- The diffuser body may be fixed directly to a base, in which intermediate supports - for floor lamps - and articulated arms, springs and so and so forth - for desk lamps - may be eliminated.
- The provided screening diaphragm protects the diffuser body against penetration of dust, insects and dirt and facilitates the cleaning of the diffuser body. It may also be tubular, for example made of synthetic and transparent material, with a longitudinal slot which allows, when closed, an easy insertion thereof into the diffuser body and, when released, a self-locking positioning thereof into the diffuser body. This also facilitates the assembly of the lamp.
- Further characteristics, advantages and details of the lighting lamp according to the invention are further observable from the description that follows with reference to the attached drawings, to which reference shall be made for any detail not illustrated in detail in the description and which schematically illustrate, by way of example, two lighting lamps according to the invention.
- The drawings show in:
-
figure 1 , in a front elevational view, a lamp according to the invention, in an embodiment as a floor lamp, -
figure 2 a horizontal cross-section through the plane II-II of the lamp offigure 1 , and -
figure 3 a side elevational view, of a lamp according to the invention in a desk lamp embodiment. - In the various figures, provided in scale suitable for better clarity, identical parts have identical reference numbers.
- With reference to
figure 1 , the lighting lamp according to the invention is indicated in its entirety with 1 and, according to a first aspect of the proposed disclosure, it has atubular diffuser body 2 which does not require any supporting element but it can be directly fixed to abase 3, shaped at will. - According to a second aspect of the proposed disclosure the opening for the outgoing of the light is not provided for solely at the opening 4 of the diffuser body opposite to the
base 3, such opening 4 possibly being provided for closable by a cover element, for example removable, not illustrated, but it may be divided into a plurality ofopenings 5, shaped at will, for example rectangular, circular, and so on and so forth, which are distributed along thediffuser body 2 at will. - In the lamp illustrated in
figures 1 and 2 , saidopenings 5 are provided for on and along half of the surface of thediffuser body 2, which may have a circular or polygonal cross section at will. This allows obtaining a stabilised light emission at will, depending on the desired lighting results and effects. - The
openings 5 are easily obtainable through laser cutting in thediffuser body 2, preferably made of metal, for example steel, light alloy and so on and so forth. - LEDs - monochrome or coloured at will, which are provided for in a number suitable for the geometric dimensions of the
diffuser body 2 and the light to be emitted - are preferably provided for as lighting means 6. SaidLEDs 6 may, for example, be fixed to a flexible tape-like support 7, for example consisting of a fabric, in turn fixed to a stiff strip-like supportingelement 8 inserted into thediffuser body 2, for example as a diametral diaphragm and forming twointernal chambers figure 2 , thechamber 10 in the illustrated example representing a blind chamber. - In the illustrated example, the
LEDs 6 are arranged in thechamber 9, in whose semi-surface of thediffuser body 2 theopenings 5 are provided. - A tubular diaphragm 11, having the same polygonal configuration of the
diffuser 2, which has alongitudinal slot 12 such that by tightening said diaphragm 11 it can be easily inserted into thediffuser 2 and, by releasing the diaphragm 11 it is self-locked in the diffuser, is provided for in order to prevent the penetration of dust, insects and dirt into thediffuser body 2. Said diaphragm 11 may be made of stiff transparent synthetic material, for straight diffusers,figure 1 , or flexible synthetic material, for curved diffusers,figure 3 . - The
LEDs 6 may be divided - in terms of circuit - into two or more groups, inserted through known connection means, like switches or the like, not illustrated, supported in thebase 3, or controllable by a remote control, also not illustrated. - Regarding the desk lamp 1 illustrated in
figure 3 , and other lamps having acurved diffuser body 2, reference shall be made to the lamp offigures 1 and 2 . - Providing
diffuser bodies 2 having a semipolygonal cross section, or having thechamber 9 alone housing theLEDs 6 falls within the scope of the invention. Thus, besides a new and unique aesthetic aspect, considerable saving in terms of materials and reduction of production costs is obtained. - From the structural and functional description above, it is observable that the disclosures of the invention allow efficiently meeting the abovementioned task and obtaining the aforementioned advantages.
- In practice, those skilled in the art may introduce modifications and variants, such as for example providing for
diodes 6 andopenings 5 for the outgoing of the light even in theblind chamber 10, or provide for the tubular diaphragm 11 outside thediffuser body 2, and so on and so forth, without departing from the scope of protection of the invention as claimed.
Claims (7)
- Lighting lamp (1) comprising:- a diffuser body (2),- lighting means (6) housed in said diffuser body (2),- a supporting base (3),- circuital components,characterized in that- said diffuser body (2) is made in the form of a tubular diffuser which has, at least partly on its length, openings (5) for the outgoing of the light produced by said lighting means (6),- in that said lighting means (6) are preferably formed by LEDs which are supported on at least a supporting element (7; 8) which axially extends into said tubular diffuser body (2),- in that is provided a transparent or opaque screening diaphragm (11) which is associated to said diffuser body (2) and covers said openings (5) for the light outgoing.
- Lighting lamp according to claim 1, characterized in that said tubular body (2) has a cross section which is circular-polygonal or polygonal at will, wherein a strip-like support (8) for the provided LEDs (6) acts as a partition diaphragm and separates the interior of said diffuser body (2) in a chamber (9) housing said LEDs and in a blind chamber (10).
- Lighting lamp according to claim 1, characterized in that said tubular body (3) has a semipolygonal, a semicircular or a semipolygonal cross section at will, wherein said semipolygonal body defines a chamber (9) housing a strip-like support (8) of the provided LEDs (6).
- Lighting lamp according to claims 1 to 3, characterized in that said LEDs (6) are preferably preliminarily supported on a strip-like support (7) consisting of a fabric, a synthetic film or the like which is preferably flexible and which, in turn, is supported on a stiff strip-like support (8) which in case of diffuser bodies (2) having two chambers (9, 10) forms said partition diaphragm (8) separating said chambers.
- Lighting lamp according to one or more of claims 2 to 4, characterized in that said screening diaphragm (11) is made of synthetic material, for example of polycarbonate, and has a cross section which is similar to the cross section of said diffuser body and has a longitudinal slot such that by clamping said diaphragm (11) the latter may be inserted into said diffuser body (2) and, after the release of said diaphragm, the latter locks itself into said diffuser body (2) and, in case of diffuser bodies (2) having two chambers (9, 10), houses said partition diaphragm (8).
- Lighting lamp according to one or more of claims 2 to 4, characterized in that said screening diaphragm (11) is made of synthetic material, for example of polycarbonate, and has a cross section which is similar to the cross section of said diffuser body and has a longitudinal slot such that by enlarging said diaphragm (11) the latter may be inserted outside onto said diffuser body (2) and, after the release of said diaphragm, the latter locks itself outside onto said diffuser body (2).
- Lighting lamp, characterized in that it comprises a rectilinear or bent tubular diffuser body (2) according to one or more of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000041A ITCO20090041A1 (en) | 2009-10-20 | 2009-10-20 | "LIGHTING LAMP" |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2314907A1 true EP2314907A1 (en) | 2011-04-27 |
Family
ID=42320783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10013759A Withdrawn EP2314907A1 (en) | 2009-10-20 | 2010-10-19 | Illumination device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2314907A1 (en) |
IT (1) | ITCO20090041A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPD20110267A1 (en) * | 2011-08-10 | 2013-02-11 | Massimo Crivello | LIGHTING DEVICE |
IT201700029945A1 (en) * | 2017-03-17 | 2018-09-17 | Biosyntex S R L | DIFFUSER TUBE |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3548186A (en) * | 1968-01-24 | 1970-12-15 | Walter B Brock | Reading lamp shield |
US4575786A (en) * | 1982-04-13 | 1986-03-11 | British Aerospace Public Limited Company | Radiation emitting apparatus |
DE3826161A1 (en) * | 1988-08-01 | 1990-02-08 | Stiers Unterhaltungselektronik | Light-fanning device |
WO2000031463A1 (en) * | 1998-11-24 | 2000-06-02 | Lumileds Lighting U.S., L.L.C. | Housing and mounting system for a strip lighting device |
DE20319640U1 (en) * | 2003-12-02 | 2004-03-18 | Ho, Sung Tao | LED lamp tube |
US20050036322A1 (en) * | 2003-07-28 | 2005-02-17 | Veffer Samuel C. | Lamp |
-
2009
- 2009-10-20 IT IT000041A patent/ITCO20090041A1/en unknown
-
2010
- 2010-10-19 EP EP10013759A patent/EP2314907A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3548186A (en) * | 1968-01-24 | 1970-12-15 | Walter B Brock | Reading lamp shield |
US4575786A (en) * | 1982-04-13 | 1986-03-11 | British Aerospace Public Limited Company | Radiation emitting apparatus |
DE3826161A1 (en) * | 1988-08-01 | 1990-02-08 | Stiers Unterhaltungselektronik | Light-fanning device |
WO2000031463A1 (en) * | 1998-11-24 | 2000-06-02 | Lumileds Lighting U.S., L.L.C. | Housing and mounting system for a strip lighting device |
US20050036322A1 (en) * | 2003-07-28 | 2005-02-17 | Veffer Samuel C. | Lamp |
DE20319640U1 (en) * | 2003-12-02 | 2004-03-18 | Ho, Sung Tao | LED lamp tube |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPD20110267A1 (en) * | 2011-08-10 | 2013-02-11 | Massimo Crivello | LIGHTING DEVICE |
IT201700029945A1 (en) * | 2017-03-17 | 2018-09-17 | Biosyntex S R L | DIFFUSER TUBE |
WO2018167721A1 (en) * | 2017-03-17 | 2018-09-20 | BIOSYNTEX S.r.l. | Diffuser tube |
Also Published As
Publication number | Publication date |
---|---|
ITCO20090041A1 (en) | 2011-04-20 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20111028 |