EP0062004A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A device permitting of economizing electric lighting energy
Assignee: Individual
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Filing: 1982-03-24
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Granted: —
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Expires: 2002-03-24
Abstract
Abstract The device is to be mounted on any individual chandelier or any form of lamp: normal bulb (10), fluorescent, neon, sodium mercury vapour etc. When the space is not illuminated very much, the lamp (10) in consequence of the electronic circuit contained in the device according to the invention (1) lights up with an intensity so as to compensate for the reduction of the illumination of the surroundings. The device therefore controls every individual lamp economizing energy because unlike the known devices controlling groups of lamps it acts so as to subdue the light emitted by the lamp or bulb gradually the more the space surrounding it is illuminated. The luminous energy emitted is inversely proportional to the luminous intensity of the surrounding space. The luminous energy of the space is preferably communicated to the device (1) by means of a bundle of optical fibres (2) avoiding the light reflected by the shield (14) of the lamp.
Inventors
- 👤 Giuseppe Baccanelli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/08; H05B39/081
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A device permitting of economizing electric lighting energy characterised by numbers permitting of subduing the light of a lamp or group of lamps so as to emit light with a luminous intensity inversely proportional or almost inversely proportional to the luminous intensity of the surrounding environment; the minimum luminous intensity (in Fig. 8) of the lamp or of the group of lamps being capable of being predetermined and preregulated at any point of the characteristic of attenuation of the lamp.
Claim 2
Independent Claim
80 words
A device permitting of economizing electric lighting energy characterised by numbers permitting of subduing the light of a lamp or group of lamps so as to emit light with a luminous intensity inversely proportional or almost inversely proportional to the luminous intensity of the surrounding environment; the minimum luminous intensity (in Fig. 8) of the lamp or of the group of lamps being capable of being predetermined and preregulated at any point of the characteristic of attenuation of the lamp.
Claim 3
Dependent Claim
46 words
A device according to claim 1, characterised in that it is electronic and comprises at least one photocell (7) which receives the light from the space surrounding the lamp or the assembly of lamps respectively by means of at least one bundle of optical fibres (2).
Claim 4
Dependent Claim
36 words
A device according to claim 1, characterised in that it is disposed at any point of the circuit of the lamp situated in the space illuminated by the lamp or of the assembly of lamps respectively.
Claim 5
Dependent Claim
62 words
A device according to claim 1, characterised in that the said group of lamps joined into a single assembly is constituted by a chandelier (3 Fig. 1) and that the device is fitted in the electric circuit of the chandelier according to the framework for attachment of the chandelier to the ceiling under the rose (4 Fig. 1) of the said chandelier.
Claim 6
Independent Claim
49 words
A device according to claims 1 and 2, characterised in that it is adapted so as to be capable of being screwed between the lamp holder (9 Fig. 6) and the lamp (10) whilst the photoelectric cell (7) is illuminated by means of a bundle of optical fibres (2).
Claim 7
Independent Claim
65 words
A device according to claims, 1, 2, 5 characterised in that on the free end of the bundle of optical fibres there is mounted a device for regulating manually the light which the bundle receives or a connector for optical fibres (2' Fig. 5) so that this bundle may be lengthened for the manual or automatic regulation at a distance of the desired luminous intensity.
Claim 8
Dependent Claim
42 words
A device according to claim 1, characterised in that it comprises at least one photo-electric cell illuminated directly through an aperture towards the outside from the light of the space in which the lamp or the assembly of lamps respectively is situated.
Claim 9
Dependent Claim
122 words
A device according to claim 1, characterised in that the said members are electronic and comprise a diac (Tl), a triac (T2) and a filter formed by a condenser (Cl) and two coils (Ll and L2) to eliminate the disturbances caused by the ignition of the triac; a condenser (C3) fed by the drop in voltage at the resistances (Ri, R2 and R5); the condenser whose capacity is selected so as to reach a predetermined voltage (about 30 volt), thediac (Tl), the triac (T2) connected and the lamp (10) lights up; the whole assembled so that by varying the charge current of the said condenser (C3) advances or retards the ignition of the triac, which ignition which may vary within 180 degrees.
Claim 10
Dependent Claim
34 words
A device according to claim 1, assembled (1 Fig. 7) so as to be able to be mounted inside the fitting (15, Fig. 7) or mechanical framework for the lighting with tubular fluorescent lamps.
Claim 11
Independent Claim
34 words
A device according to claims 1 to 9 made so as to be able to be directly incorporated in the chandelier or in any lamp holder or lighting apparatus at the time of manufacture.
References Cited (Backward Citations)
GB191407440A
Cited
US3085179A
Cited
US3450939A
Cited
GB1455875A
Cited
GB1477438A
Cited
US4023035A
Cited
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