EP 0062004 A1 19821006 - A device permitting of economizing electric lighting energy.
Title (en)
A device permitting of economizing electric lighting energy.
Title (de)
Elektrische Lichtenergiesparvorrichtung.
Title (fr)
Dispositif permettant d'économiser l'énergie lumineuse électrique.
Publication
Application
Priority
- CH 215781 A 19810331
- CH 369381 A 19810605
Abstract (en)
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.
IPC 1-7
IPC 8 full level
H05B 39/08 (2006.01)
CPC (source: EP)
H05B 39/081 (2013.01)
Citation (search report)
- GB 1477438 A 19770622 - SIEMENS AG
- US 3450939 A 19690617 - MISENCIK JOHN J
- GB 1455875 A 19761117 - SCHOLES CO LTD GEORGE H
- US 4023035 A 19770510 - RODRIGUEZ EDWARD T
- GB 191407440 A 19150211 - TURNER CHARLES JAMES
- US 3085179 A 19630409 - KEERAN WILLIAM C
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0062004 A1 19821006; EP 0062004 B1 19860702; DE 3271869 D1 19860807
DOCDB simple family (application)
EP 82810133 A 19820324; DE 3271869 T 19820324