(19)
(11) EP 0 002 622 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.07.1979 Bulletin 1979/15

(43) Date of publication A2:
27.06.1979 Bulletin 1979/13

(21) Application number: 78300855

(22) Date of filing: 18.12.1978
(84) Designated Contracting States:
BE DE FR NL

(30) Priority: 20.12.1977 GB 5309877

(71) Applicant: Allen, Thomas Arthur
 ()

(72) Inventor:
  • Allen, Thomas Arthur
     ()

   


(54) Signal lamp with control circuit


(57) A signal device comprising a casing, a plurality of lamp holders for lamp means disposed within said casing, a light transmitting cover for said lamp means, a control circuit connected to said lamp holders, said control circuit being switchable to illuminate a plurality of lamps in said holders simultaneously in at least two predetermined modes. The circuit includes means for supplying an electrical current to each lamp at least during periods when said each lamp is not illuminated said electric current being sufficient to maintain the filament of each said lamp at black heat.






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