Electronic display element for electronic display device

Details Electronic display element for electronic display device Electronic display element for electronic display device

1990-06-06

1992-05-05

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34081505, 34081529, G08B 500

Patent

active

051111934

ABSTRACT:
A display element designed to permit easy assembly of an electronic display device and which utilizes an electromagnet having an L-shaped pole piece and reverse windings. Specifically, the invention resides in a display element for use in an information display device having a plurality of holes provided therein for receiving a plurality of the display elements. The display element includes a translucent member adapted to abut against the back side of the display device and cover one of the holes therein; a mounting bracket adapted to abut against the front side of the panel and having a fastening means extending through the hole of the display panel and connecting to the translucent member for securing the translucent member and the bracket to the panel; a flap pivotably secured to the display panel about a pivot axis, one side of the flap having a non-reflective surface and the other side of the flap having a reflective surface, the flap being piovtal from a first position where the non-reflective surface faces outwardly towards a viewer to a second position, approximately 180.degree. from the first position, where the reflective surface faces outwardly towards a viewer; a magnet disposed on the flap; an electromagnet secured to the back side of the display device and having a pole piece disposed axially therein and extending into the translucent member; and a source for supplying electric current to the electromagnet so as to alternatively energize the pole piece to be a south pole piece or a north pole piece wherein when the pole pieces are energized to be either a north pole piece or a south pole piece the flap is pivoted to the first position and when the pole pieces are energized to be the other of the north pole piece and the south pole piece the flap is pivoted to the second position.

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