EP1319888A2

EP1319888A2 - Lighting equipment with a differentiated luminous effect

Info

Publication number: EP1319888A2
Application number: EP02080286A
Authority: EP
Inventors: Giannunzio Guzzini
Original assignee: Iguzzini Illuminazione SRL; Iguzzini Illuminazione SpA
Current assignee: Iguzzini Illuminazione SpA
Priority date: 2001-12-17
Filing date: 2002-12-13
Publication date: 2003-06-18
Anticipated expiration: 2022-12-13
Also published as: HK1058228A1; NO20026036D0; DK1319888T3; ATE364155T1; DE60220491D1; NO20026036L; ITMI20010657U1; ES2287220T3; EP1319888B1; EP1319888A3; SI1319888T1; PT1319888E; DE60220491T2

Abstract

Lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects, comprises an external containment body (12, 12a, 12b) suitable for housing at least one luminous source (13), wherein said at least luminous source (13) is sustained by a relative supporting base (14), wherein said external body (12) has a rounded and transparent form and includes at least two series of localized areas (16, 17, 18, 19) with differentiated transparency for the emission of various intensities of light. Said series of areas (16, 17, 18) are preferably arranged along sectors of the rounded external body. Moreover, the external body (12) also contains a perimeter zone where there is at least a further annular portion (19) with a differentiated transparency with respect to the cited at least two series of localized areas, all of the above allowing a particular and variously arranged light diffusion emitted by the internal luminous source (13).

Description

The present invention relates to lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects.
Numerous types of wall or ceiling lighting equipment have been produced in the field of lighting, equipped with a containment body for one or more luminous sources for the outward emission of light.
In some case, however, the necessity arises for a particular light emission which, in addition to its normal lighting function, also enhances the environment to be illuminated.
In particular, lighting equipment capable of providing a differentiated luminous effect which creates specific luminous effects, possibly also pre-selected upon the request of the user, has not as yet been set up.
The equipment with luminous effects so far available, is only suitable for creating well localized effects, for example in the form of single luminous strips or beams, which do not provide an optimum illumination.
The objective of the present invention is to produce lighting equipment which provides an effective and optimum illumination, also creating a differentiated luminous effect.
Another objective of the present invention is to create specific luminous effects, of the pre-selected type and suitable for the environment for which they are destined.
A further objective of the present invention is to produce lighting equipment which, in addition to a differentiated luminous effect, provides a clear and well-defined illumination.
These and other objectives, according to the present invention, are achieved through lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects, as described in claim 1.
Further characteristics of the present invention are the object of the dependent claims.
The characteristics and advantages of lighting equipment with a differentiated luminous effect, according to the present invention, will be more clearly understood from the following description, provided for illustrating but non-limiting purposes, with reference to the enclosed figures, wherein:
figure 1 is a perspective view of lighting equipment with a differentiated luminous effect according to the invention in a first illustration,
figures 2 and 3 are two different sectional views of the equipment as shown in figure 1,
figure 4 is a section of a detail of a quarter of an external containment body, having in section an elliptic form, of the equipment as shown in figure 1,
figures 5 and 6 are front and side elevation views of a second illustration hanging from the ceiling,
figure 7 is a perspective view of a third illustration of lighting equipment with the same innovative concept as the previous ones, hanging from a thread.
With reference in particular to figures 1, 2 and 3, the lighting equipment with a differentiated luminous effect, according to the invention, is indicated, as a whole, with the number 11.
Said lighting equipment 11 with a differentiated luminous effect is particularly advantageous for creating luminous effects, also of the pre-selected type on the part of the user, as can be seen from the following description.
The lighting equipment 11 comprises an external containment body 12, suitable for housing at least one luminous source, such as a lamp 13 to which a double spotlight 30 is associated.
The spotlight 30 has a perforated surface 31 and a spacing or staff bead 32 between its two parts. In this way, the light emitted (from the perforated surface and spacing) illuminates the internal surface of the whole equipment, enhancing the entire volume. This luminous source 13 is generally sustained by a relative supporting base or lamp holder 14, suitably supported inside the external containment body 12.
In particular, according to the invention, the external containment body 12 has a rounded shape and consists of transparent material, such as polycarbonate or the like. It can obviously also be made of glass, or even crystal, even if, in this case, the cost increases considerably.
Figures 1, 2 and 3 show how the external containment body 12 is in the form of an ellipsoid and consists of two parts 12a and 12b, close to each other and fixed together, using any of the known methods in the lighting field. Inside the two parts 12a and 12b of the body 12 there is a holding structure, schematized in 15 which helps to maintain the two parts and support the base or lamp holder 14, and all that is necessary for the correct functioning of the equipment 11.
The invention also proposes that said equipment 11 have a series of localized areas with a differentiated transparency in its external containment body 12, for the emission of light at different intensities. In the example shown in figures 1, 2 and 3, said series are located in the portions or zones 16, 17 and 18. This specific arrangement of localized zones having a differentiated transparency can be clearly seen in the section scheme of a quarter of ellipse shown in figure 4 wherein three of the cited series of portions are arranged along sectors of the external body 12 and are located by the axes X and Y. These portions 16, 17 and 18 are produced by textures or knurling or grinding which allow a major or minor light transmission. Moreover, the portions 16, 17 and 18 can also allow a directional transmission of light, so that this is emitted in a pre-selected direction.
Furthermore, in the example of figures 5-7, the external body 12 also has an "equatorial" perimeter or central annular zone, where there is at least one further portion with a differentiated transparency 19 with respect to the above three series of localized portions 16, 17 and 18. In particular, this additional portion with a differentiated transparency 19 in an annular equatorial position, also provides a reinforcement capable of supporting the lighting equipment with greater safety.
The whole equipment is arranged so as to allow a particular and varying light diffusion emitted by the internal luminous source 13.
Figure 1 shows how said equipment can be hung from the ceiling (not represented) by means of suspension elements 21, such as cables. These cables 21 are, for example, fixed to the perimeter zone where the two parts 12a and 12b are joined, constrained to the internal holding body 15 or possibly by means of suitable hooking elements 22 fixed to the external containment body 12.
In this embodiment, the equatorial perimeter or central annular zone 19 has been eliminated and the sectors are therefore entire in the two parts 12a and 12b, as illustrated in the section of figure 4.
Finally, figure 7 shows a further third example of lighting equipment which utilizes the same innovative concept as the previous ones, but in this case, it is hung to a ceiling (not shown) by means of a cable 20. The external body, in this case, only has the additional portion or equatorial perimeter or central annular zone 19, and the rest of the body is smooth and transparent.
In figures 5 and 6 the containment body 12a consists of only one of the two parts, closed and fixed to a ceiling 23 forming a half-ellipsoid. The external body, as mentioned above, has both the series of localized portions 16, 17 and 18, and also the portion or equatorial perimeter or central annular zone 19.
It is evident that the external containment body can also be simply a sphere, semi-sphere or similar, without being excluded from the scope of this invention.
There should be at least two series of localized portions with a differentiated transparency for a light emission of different intensities, for obtaining the minimum luminous effect according to the invention.
The light emission forms clear and uniform rays which are emitted from the equipment 11, according to the invention, in preferential directions.
The characteristics of the lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects, are clearly illustrated by the above description.
This pre-selection is, in fact, effected by simply arranging a chosen number of series with a definite density.
There can even be portions in which the external containment body is simply transparent, so as to create a simple luminous effect, similar to that produced by known devices which can be added to those created by the above series.
From the above description, the object of the invention, together with its advantages, are evident.
It is also clear that numerous variations can be applied to the lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects, object of the present invention, without excluding any of the novelty principles which characterize the inventive idea illustrated.
In the practical embodiment of the invention, the materials, forms and dimensions of the details illustrated can vary according to the demands and can be substituted with other technically equivalent alternatives.

Claims

Lighting equipment with a differentiated luminous effect, in particular for creating pre-selected luminous effects, including an external containment body (12, 12a, 12b) suitable for housing at least one luminous source (13), wherein said at least one luminous source (13) is sustained by a relative supporting base (14), characterized in that said external containment body (12, 12a, 12b) has a rounded form, is transparent and has at least two series of localized portions (16, 17, 18, 19) with a differentiated transparency, for the emission of light at different intensities.
The lighting equipment according to claim 1, characterized in that said external containment body (12, 12a, 12b) is in the form of an ellipsoid.
The lighting equipment according to claim 1, characterized in that said external containment body (12) is in the form of a half-ellipsoid (12a, 12b), or sphere, or a semi-sphere.
The lighting equipment according to any of the previous claims, characterized in that said at least two series of portions (16, 17, 18) are arranged along sectors of said external containment body (12, 12a, 12b).
The lighting equipment according to any of the previous claims, characterized in that it has at least one "equatorial" perimeter or central annular zone (19) with a differentiated transparency, situated on said external containment body (12, 12a, 12b).
The lighting equipment according to any of the previous claims, characterized in that said external containment body (12) is produced in two different parts (12a, 12b) joined to each other.
The lighting equipment according to any of the previous claims, characterized in that said external containment body (12) is made of polycarbonate, glass or even crystal.
The lighting equipment according to claim 6, characterized in that said external containment body (12, 12a, 12b) is fixed to the ceiling by means of suspension elements (21).
The lighting equipment according to claim 1, characterized in that said external containment body (12) is produced in a single part (12a or 12b) and is fixed to a ceiling (23) or wall.
The lighting equipment according to claim 1, characterized in that a double spotlight (30) which has a perforated surface (31) and a spacing or staff bead (32) between its two parts is associated with said luminous source (13).