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US 4,791,418 AGranted
Signal light
AssigneeTaliq Corporation
InventorsHideo Kawahara, Harunobu Yoshida, Masato Hyodo
Life of this patent
Estimating the term…
Abstract
A signal light comprising a light source and a liquid crystal means. The liquid crystal means is disposed between the light source and a viewing area of the signal light for blocking and transmitting light according to a given electrical input. The signal light further includes means for energizing the light source when the liquid crystal means transmits light and for de-energizing the light source when the liquid crystal means blocks light.
Claims20
A signal light comprising
- a light source disposed in the casing for the signal light;
- a liquid crystal means disposed between said light source and a viewing area of the signal light for blocking or transmitting light according to a given electrical input;
- means for applying said electrical input to said liquid cyrstal means to transmit light when said light source is energized and for removing said electrical input to block light when said light source is de-energized;
- and
- a substantially transparent colored plate disposed between said light source and said liquid crystal means so that light from said light source may be transmitted therethrough when said light source is energized, the surface of said transparent colored plate coated with a transparent light-scattering paint.
2 more elements
A signal light comprising:
- a light source disposed toward the rear of a casing for the signal light;
- a liquid crystal means disposed between said light source and a viewing area of the signal light for blocking or transmitting light according to a given electrical input;
- means for applying said electrical input to said liquid crystal means to transmit light when said light source is energized and for removing said electrical input to block light when said light source is de-energized;
- a substantially transparent colored plate disposed between said light source and said liquid crystal means so that light from said light source may be transmitted therethrough when said light source is energized;
- and
- an outer cylindrical hood extending from said casing with said liquid crystal means disposed within said hood in front of said light source and openings formed in said hood between said liquid crystal means and said light source for releasing heat therefrom.
3 more elements
A signal light comprising:
- a light source in a casing for the signal light;
- a liquid crystal means disposed between said light source and a viewing area of the signal light for blocking or transmitting light according to a given electrical input, said liquid crytal means inclined from the vertical so that the front surface of said liquid crystal means is oriented substantially perpendicular to a line of sight of an observer in the viewing area of the signal light;
- means for applying said electrical input to said liquid crystal means to transmit light when said light source is energized and for removing said electrical input to block light when said light source is de-energized;
- and
- a substantially transparent colored plate disposed between said light source and said liquid crystal means so that light from said light source may be transmitted therethrough when said light source is energized.
2 more elements
Dependencies are inferred from the claim text.