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Home Lighting Reflective-display-with-front-lighting

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Details
Inventors: Tijanic, Veso S.;
Assignee: Mark IV Industries Limited (Mississauga, CA)
Primary Examiner: Browne; Lynne H.
Assistant Examiner: Conley; Fredrick
Attorney, Agent or Firm: Dowell & Dowell, P.C.

Each element in an array of display elements has first and second limiting positions and in respective limiting positions selectively displays a bright and a dark surface in a viewing direction. A transparent sheet is intermediate the array and the viewer. Conductors on the sheet power light sources in the sheet to thereby direct light toward the array.

DETAILED DESCRIPTION What is claimed is: 1.
A writable display sign comprising an array of selectively writable elements including disks movable to display a first face or a second contrasting face in a direction of viewing, a substantially transparent sheet located forwardly of said array in the direction of viewing so as to be positioned between a viewer and said array, and a plurality of light emitting diodes mounted on said sheet and directed to shine light on said array.
2.
A writable display sign as claimed in claim 1 where said sheet is a front wall of a housing in which said array is mounted.
3.
A writable display sign, as claimed in claim 1 where said sheet is a vehicle window.
4.
A writable display sign as claimed in claim 1 wherein conducting traces on said sheet are used to supply current to energize said light emitting diodes.
5.
A writable display sign as claimed in claim 1, wherein said light emitting diodes are connected in series circuits which series circuits are connected in parallel.
6.
A writable display sign as claimed in claim 1 wherein said light emitting diode includes an opaque casing which blocks escape of light therefrom toward a viewer while allowing light therefrom to illuminate said array.
7.
A writable display sign as claimed in claim 6, wherein said casing includes inner wall surfaces which are reflective.
8.
A writable display sign as claimed in claim 1 wherein said sheet is a transparent printed wiring board.
9.
A writable display sign as claimed in claim 8, wherein conducting traces on said printed wiring board conduct current to energize said light emitting diodes.
10.
A writable display sign as claimed in claim 8, wherein said light emitting diodes are connected in series circuits which series circuits are connected in parallel.
11.
A writable display sign as claimed in claim 1 where each of said disks rotates about an axis approximately transverse to the direction of viewing.
12.
A writable display sign as claimed in claim 11, wherein said sheet is a front wall of a housing in which said array is mounted


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