Display device for a tuning apparatus
AssigneeRoland Corporation
InventorNorihiko Wada
Life of this patent
Estimating the term…
Abstract
A plurality of LEDs are arranged continuously in a row and a transparent LED cover is disposed over the front surface of the LEDs. The LED cover extends in the longitudinal direction of the arrangement of LEDs and is curved in an arc shape that is perpendicular to the longitudinal direction of arrangement of LEDs. The cover does not contain light diffusion material, but has a corrugated surface around the arc shape. The corrugated surface extends in the longitudinal direction of the arrangement of LEDs.
Claims21
A display device for a musical tuning apparatus, the display device comprising:
- a point light source unit group including a plurality of point light source units arranged in a row along a longitudinal direction for displaying a meter of the tuning apparatus, each point light source unit having a light emitting side, and
- a generally transparent cover disposed over the light emitting side of the point light source units and extending in the longitudinal direction of the arrangement of point light source units, the generally transparent cover having a shape that is curved in an arc extending generally perpendicular to the longitudinal direction, and
- the cover being made of a material that is free of added light diffusion material and the cover having a corrugated surface around the arc shape of the cover, where the corrugated surface has corrugations that extend in the longitudinal direction of the arrangement of point light source units.
A display device for a musical tuning apparatus, the display device comprising:
- a plurality of point light source units arranged in a row having a longitudinal dimension for displaying a meter of the tuning apparatus;
- and
- a cover disposed over the point light source units and extending in the longitudinal dimension of the row of point light source units, the cover having a cross-section shape at a cross section taken transverse to the longitudinal dimension of the row of point light source units, where the cross-section shape comprises an arc shape, the arc shape having a arc peak;
- wherein the cover has a corrugated surface that has a cross-section shape at said cross section, the cross-section shape of the corrugated surface having a plurality of generally triangular shaped portions arranged at least within a defined range from the arc peak and extending at least partially along the arc shape.
Dependencies are inferred from the claim text.