EP 1389788 A1 20040218 - Function indicator for visually indicating an operating state of equipment
Title (en)
Function indicator for visually indicating an operating state of equipment
Title (de)
Funktionsanzeige zum Anzeigen des Zustandes einer Vorrichtung
Title (fr)
Indicateur de fonction pour la visualisation de l'état d'un dispositif
Publication
Application
Priority
EP 02018105 A 20020813
Abstract (en)
A function indicator for visually indicating an operating state of equipment comprises at least one light emitting element 4, and an optically transparent member OB for distributing the light emitted by the light emitting element 4. The optically transparent member has a light distribution portion BS with a first recess 7 and a second recess 8 opposite to the first recess 7. The light emitting element 4 is arranged proximate to one (7) of the two recesses such that the vertices of the two recesses are located essentially on the light emission main axis of the light emitting element 4. The opening angles ϕ1, ϕ2 of the two recesses 7, 8 are such that light rays emitted from the light emitting element 4 are refracted by the surface of recess 7 to be incident on the surface of the recess 8 at an angle THETA 3 of total reflection, to be thereby reflected into the light distribution portion BS of the optically transparent member. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 13/02 (2006.01)
CPC (source: EP)
H01H 13/023 (2013.01); H01H 2219/062 (2013.01); H01H 2219/0622 (2013.01)
Citation (search report)
- [XY] BE 891622 A 19820416 - GTE AUTOMATIC ELECTRIC LAB INC
- [Y] EP 0933792 A1 19990804 - TOKAI RIKA CO LTD [JP]
- [Y] US 5803238 A 19980908 - ROZA IVAN [CH]
- [A] US 5555161 A 19960910 - ROE PAMELA A [US], et al
- [A] US 5083240 A 19920121 - PASCO IAN K [GB]
- [A] DE 4123788 A1 19930121 - BOSCH GMBH ROBERT [DE]
- [A] US 3409751 A 19681105 - KRIEGER ALVIN W
- [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 07 29 September 2000 (2000-09-29)
Designated contracting state (EPC)
DE ES FR GB IT TR
DOCDB simple family (publication)
EP 1389788 A1 20040218; EP 1389788 B1 20090107; DE 60230738 D1 20090226
DOCDB simple family (application)
EP 02018105 A 20020813; DE 60230738 T 20020813