EP 2479480 A4 20180131 - LIGHT SOURCE DEVICE AND SURFACE ILLUMINATING DEVICE USING SAME LIGHT SOURCE DEVICE
Title (en)
LIGHT SOURCE DEVICE AND SURFACE ILLUMINATING DEVICE USING SAME LIGHT SOURCE DEVICE
Title (de)
LICHTQUELLENVORRICHTUNG UND OBERFLÄCHENBELEUCHTUNGSVORRICHTUNG MIT DIESER LICHTQUELLENVORRICHTUNG
Title (fr)
DISPOSITIF DE SOURCE LUMINEUSE ET DISPOSITIF D'ÉCLAIRAGE DE SURFACES UTILISANT UN TEL DISPOSITIF DE SOURCE LUMINEUSE
Publication
Application
Priority
- JP 2009218115 A 20090918
- JP 2010066226 W 20100917
Abstract (en)
[origin: EP2479480A1] A light source device of the present invention includes: a point light source 2 having high directionality; a housing 3 that has a housing bottom plate arranged with the point light source 2, housing side plates arranged in a standing manner from a periphery of the housing bottom plate to a predetermined height, and a side defining an opening provided facing the housing bottom plate, and that is formed on inner wall surfaces thereof with reflective surfaces; and an optical reflective plate 4 that covers the opening and emits light from the point light source as substantially uniform illumination light. Each of at least some of the housing side plates is provided with a side central reflective portion having a high optical reflectance and a low optical transmittance in a side plate region nearest to the point light source 2, and provided, in outer side plate regions of the side central reflective portion, with side outer reflective portions that have an optical reflectance decreasing and an optical transmittance increasing as being distant from the side central reflective portion. With the present invention, it is possible to provide a light source device that can be used for multiple purposes by enabling to emit illumination light from multiple faces.
IPC 8 full level
F21S 2/00 (2016.01); F21V 7/00 (2006.01); F21V 11/14 (2006.01)
CPC (source: EP KR US)
F21K 9/20 (2016.07 - KR); F21K 9/68 (2016.07 - EP US); F21V 11/14 (2013.01 - EP KR US); F21V 15/01 (2013.01 - KR); F21V 15/01 (2013.01 - EP); F21Y 2101/00 (2013.01 - KR); F21Y 2105/00 (2013.01 - EP US); F21Y 2105/10 (2016.07 - EP US); F21Y 2105/16 (2016.07 - KR); F21Y 2115/10 (2016.07 - EP KR US); F21Y 2115/30 (2016.07 - EP KR)
Citation (search report)
- [YD] JP 2009110696 A 20090521 - OPT DESIGN KK
- [Y] JP 2005071733 A 20050317 - SUZUKI MOTOHARU, et al
- [Y] JP H09236803 A 19970909 - VICTOR COMPANY OF JAPAN
- [A] WO 2009001532 A1 20081231 - OPTO DESIGN INC [JP], et al
- [A] WO 2009013858 A1 20090129 - OPTO DESIGN INC [JP], et al
- [A] US 2009003002 A1 20090101 - SATO EIICHI [JP]
- See references of WO 2011034178A1
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2479480 A1 20120725; EP 2479480 A4 20180131; EP 2479480 B1 20181031; CN 102498336 A 20120613; CN 102498336 B 20150218; JP 2011065971 A 20110331; JP 5320599 B2 20131023; KR 101731661 B1 20170428; KR 20120083330 A 20120725; WO 2011034178 A1 20110324
DOCDB simple family (application)
EP 10817291 A 20100917; CN 201080041443 A 20100917; JP 2009218115 A 20090918; JP 2010066226 W 20100917; KR 20127006631 A 20100917