Internal illumination based sign device
AssigneeLedi Lite Ltd.
InventorsEvan Spero, Menachem Philipovsky
Life of this patent
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Abstract
An illuminating unit (28) is presented for use in an internally illuminated sign device (1) for displaying a pattern indicative of certain fixed information within an indicia area. The illuminating unit (28) comprises a light boundary structure (33) for a light source (38) to be mounted thereon. The light boundary structure (33) has an indicia area carrying side (16) having said pattern indicative of the information to be displayed, and has an inner surface made of at least one highly reflective material to thereby increase the amount of light propagating from the light source (38) to said indicia area
Claims36
An illuminating unit for use in an internally illuminated sign device for displaying a pattern indicative of certain fixed information within an indicia area, the illuminating unit comprising a light boundary structure for a light source to be mounted thereon, wherein said light boundary structure has an indicia area having said pattern, and has a highly reflective inner surface, the illuminating unit being characterized in that the light boundary structure is formed of two attachable parts including, respectively, a rear frame and an upper panel structure removably mountable onto the rear frame, said upper panel structure being a multi-layer structure formed by at least two layers patterned in accordance with the information to be displayed, the upper external layer having translucent regions and light blocking regions of the indicia pattern, and the lower inner layer having translucent regions and the highly reflective regions of the indicia pattern, to thereby increase the amount of light propagating from the light source to said indicia area, enable replacing the indicia carrying panel to display various information, and enable visibility of the indicia area via external reflected light.
An illuminating unit for use in an internally illuminated sign device for displaying a pattern indicative of certain fixed information within an indicia area, the illuminating unit comprising a light boundary structure for a light source to be mounted thereon, wherein said light boundary structure has an indicia area having said pattern, and has a highly reflective inner surface, wherein the light source includes at least one LED mounted inside the light boundary structure and oriented such that it emits light directly propagating onto the inner surface of the light boundary structure opposite the indicia area carrying side of the light boundary structure, to thereby increase the amount of light propagating from the light source to said indicia area.
A power supply source for use with an internally illuminated sign device to supply power to a light source, the power supply source comprising a battery assembly and a switching circuit for controlling the operation of the battery assembly to provide at least one of the following effects:
- selective connection and disconnection of the battery assembly to and from the light source;
- recharge of the battery assembly by means of a solar cell circuit;
- supply of a constant electric current to the light source.
An illuminating unit for use in an internally illuminated sign device for displaying a pattern indicative of certain fixed information within an indicia area, the illuminating unit comprising a light boundary structure for a light source to be mounted thereon, the light boundary structure having an indicia area with said pattern and having a highly reflective inner surface, the illuminating unit being configured such that at least the indicia area carrying side of the light boundary structure is inclined downward with respect to a vertical plane so as to reduce glare in direct sunlight.
An internally illuminated sign device for displaying fixed information, the device comprising:
- an illuminating unit having a light source and a light boundary structure with an indicia area representative of the fixed information to be displayed;
- and a power supply source connectable to the light source and including a battery assembly that comprises a solar panel, the device being configured such that the solar panel is inclined upward with respect to a vertical plane so as to increase the amount of collected global solar radiation.
Dependencies are inferred from the claim text.