EP 0034494 A1 19810826 - Curvilinear type fluorescent lamp.
Title (en)
Curvilinear type fluorescent lamp.
Title (de)
Krummlinige Fluoreszenz-Lampe.
Title (fr)
Lampe de fluorescence de type curviligne.
Publication
Application
Priority
- JP 1657880 A 19800215
- JP 2651980 A 19800305
Abstract (en)
A curvilinear type fluorescent lamp comprises a curvilinear, light-transmitting sealed tube (34) made of soda-lime glass or low lead glass containing 12 percent by weight or less of lead oxide, whose softening point is 640 to 720 DEG C and whose coefficient of linear thermal expansion is 92 to 105 x 10<-><7> cm/cm/ DEG C. On the inner surface of the tube (34) a phosphor layer (36) is formed. The phosphor forming the layer (36) contains a binder consisting chiefly of calcium borate.
IPC 1-7
IPC 8 full level
H01J 61/35 (2006.01)
CPC (source: EP)
H01J 61/35 (2013.01)
Citation (search report)
- GB 977408 A 19641209 - SYLVANIA ELECTRIC PROD
- US 2905572 A 19590922 - SHANNON JONES
- US 3012168 A 19611205 - RAY JOHN G, et al
- US 3094641 A 19630618 - GUNGLE WARREN C, et al
- US 3377494 A 19680409 - REPSHER ROBERT W
- US 3514276 A 19700526 - FUJIO HINOMARU, et al
- US 3890530 A 19750617 - HAMMER EDWARD E, et al
- US 3599029 A 19710810 - MARTYNY WILLIAM C
Designated contracting state (EPC)
CH DE FR GB NL SE
DOCDB simple family (publication)
EP 0034494 A1 19810826; EP 0034494 B1 19840111; AU 530404 B2 19830714; AU 6720281 A 19830310; CA 1158704 A 19831213; DE 3161854 D1 19840216
DOCDB simple family (application)
EP 81300626 A 19810216; AU 6720281 A 19810211; CA 370811 A 19810213; DE 3161854 T 19810216