Lighting appliance with glare reducing cross blades
AssigneeLuxonic Lighting PLC
InventorBrian Morgan
Life of this patent
Estimating the term…
Abstract
An overhead lighting appliance having a longitudinally extending and horizontally disposed lamp tube (4) housed within a reflector assembly of opposed downwardly diverging side reflectors (6) and cross blades (10) which divide the reflector assembly into cells and determine cut-off angles thus to reduce glare. Each cross blade (10) has an outer region (10a) to prevent ladder flash, which is of reduced or tapering thickness outwardly of a line C being a plane extending from the bottom of the reflector assembly to a tangent to an upper region of the lamp tube (4). The reduced width portion (10a) thus minimises obstruction of light output in the upper outer edge region of the cross blade.
Claims15
An overhead lighting appliance comprising at least one longitudinally extending and horizontally disposed lamp housed in an upper region of a reflector assembly of generally arcuate downwardly diverging from, including longitudinally spaced cross blades extending transversely across the reflector housing;
- each cross blade including opposed outer and upper regions of reduced cross section extending outwardly from respective inclined planes which lie along the appliance and extend upwardly from adjacent outer lowermost corner regions respectively of the cross blade and form tangents to an upper semi-circle concentric with the longitudinal axis of the lamp tube.
Dependencies are inferred from the claim text.