Illumination – Illuminated scale or dial – Edge illuminated modifier or light rod/pipe
Patent
1989-01-03
1991-02-19
Yeung, James C.
Illumination
Illuminated scale or dial
Edge illuminated modifier or light rod/pipe
362 27, 362 31, 362330, 362244, 40546, G01D 1126
Patent
active
049949411
ABSTRACT:
A sign of character and figure which, in addition to using the AC power supply, is particularly suitable for use with a solar energy means, comprising a solar cell for supplying the electrical energy converted from the solar energy; a battery means for receiving the electrical energy from the solar cell and supplying the stored electrical energy; a circuit means for automatically illuminating the character and figure display in the dark; a lighting means comprising a light bulb or light emitting diode as the light source; a very thin refracting plate wound within the body, the outer surface thereof having strips which are serrated at right angle and the inner surface being a smooth face through which the light from the light source is refracted into extremely uniform light rays to be emitted from the outer surface; the body comprising on the surface a figure display having a plurality of figures, each being composed of seven segments of " ", the desired figure being produced by means of strip shaped shades, and the body further comprising a character display with dots arranged in matrix, each dot comprising a large and a small holes with a " " shaped shade disposed therebetween for producing the desired character.
REFERENCES:
patent: 3131670 (1964-05-01), Hardesty
patent: 4009535 (1977-03-01), Stock
patent: 4729185 (1988-03-01), Baba
patent: 4777749 (1988-10-01), Leo, Sr.
patent: 4874228 (1989-10-01), Aho et al.
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