EP 2924713 A1 20150930 - Heater with visible light reducing optical film
Title (en)
Heater with visible light reducing optical film
Title (de)
Heizelement mit optischer Beschichtung zur Reduzierung des sichtbaren Lichts
Title (fr)
Dispositif de chauffage avec film optique pour réduction de la lumière visible
Publication
Application
Priority
JP 2014062091 A 20140325
Abstract (en)
A heater (1) includes a bulb (2), a filament (3), gas (4), and a multilayer film (5). The filament (3) is arranged along a tube axis on an inside (2a) of the bulb (2). The gas (4) is filled in the inside (2a) of the bulb (2). The multilayer film (5) is formed on an outer surface (2b) of the bulb (2). Average visible ray transmittance at a wavelength of 380 nm to 780 nm of the multilayer film (5) is equal to or lower than 24%. In the filament (3), a plurality of projecting sections (31a) projecting to an inner wall (2c) of the bulb (2) when viewed from the tube axis direction are formed in a circumferential direction and the tube axis direction.
IPC 8 full level
H01K 1/14 (2006.01); H01K 1/18 (2006.01); H01K 1/32 (2006.01); H05B 3/00 (2006.01); H05B 3/44 (2006.01)
CPC (source: EP)
H01K 1/14 (2013.01); H01K 1/18 (2013.01); H01K 1/325 (2013.01); H05B 3/0033 (2013.01)
Citation (search report)
- [Y] JP S63266792 A 19881102 - MATSUSHITA ELECTRONICS CORP
- [Y] US 4588923 A 19860513 - HOEGLER LEONARD E [US], et al
- [Y] JP 2000314807 A 20001114 - NIPPON SHINKU KOGAKU KK
- [Y] US 7345414 B1 20080318 - MILLER NATHANIEL [US], et al
- [Y] WO 2006081802 A2 20060810 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE], et al
- [Y] US 3223875 A 19651214 - REINHOLD EGGERS
- [Y] US 6075313 A 20000613 - VERHEYEN JOZEF H M R [BE]
- [A] EP 0949659 A2 19991013 - GEN ELECTRIC [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 14183059 A 20140901; JP 2014062091 A 20140325