Visual display panel
AssigneeDaktronics, Inc.
InventorsVernon P. Voelzke, Troy A. Erickson, Ronald L. Sitzema
Life of this patent
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Abstract
A light transmitting, visual display panel for use as a sign or message board and comprised of a plurality of closely adjacent, rectangular modules, each of which includes a closed, vertically disposed housing having top, bottom, side and back walls, and a front wall comprised of a plurality of closely adjacent, interchangeable, rectangular, 3-dimensional, light refracting filtering lenses. The lenses are removably secured in the housing. A vertical array of individual light sources is disposed within the housing behind the lenses and dividers behind the lenses separate the light sources. Each housing includes at least one pressurizing cooling fan and narrow, slot-like air exhaust ducts are provided between adjacent lenses.
Claims11
A light transmitting visual display panel comprised of a plurality of closely adjacent rectangular modules, each of said modules comprising:
- A) a closed vertically disposed housing having top, bottom, side and back walls, and a front wall comprised of a plurality of closely adjacent interchangeable rectangular three-dimensional filtering lenses, each of said lenses having a top edge and a bottom lip,
- B) means for removably securing said lenses in said housing,
- C) a vertical array of individual light sources disposed within the housing behind said lenses,
- D) dividers behind said lenses separating said light sources, said dividers including horizontal louvers supported at their ends in said housing and extending forwardly from the lenses, said louvers each including on one side a longitudinal channel intermediate between the forward and rearward edges and on the other side a corresponding longitudinal projection, the top edges of said lenses being engageable in said channel of one louver and the bottom lips of said lenses being engageable against the projection of the next adjacent lower louver,
- E) at least one pressurizing cooling fan in the housing, and
- F) narrow slot-like air exhaust ducts between adjacent lenses.
Dependencies are inferred from the claim text.