Signal light

Claim 2

A traffic signal comprising: an enlcosure including an elongated radiation transparent section, wherein the elongated dimension of said section is at least two times longer than the shortest dimension of said section; elongated radiation means mounted within said enclosure for providing at least two visible colors of radiation for transmission through said transparent section, and means responsive to an electrical signal for sequentially controlling the visible color of radiation to be transmitted through said transparent section.

Claim 3

A traffic signal as defined in claim 1 wherein: said elongated radiation means includes an elongated radiation source and a plurality of filters mounted for movement between said source and said transparent section, and said means responsive to an electrical signal sequentially moves said filters between said source and said transparent section.

Claim 4

A traffic signal as defined in claim 2 wherein: said plurality of filters are rotatably mounted in the form of a cylinder and surround said source, and said means responsive to an electrical signal sequentially rotates said filters into position between said source and said transparent section in a step-by-step manner.

Claim 5

A traffic signal as defined in claim 1 wherein: said elongated radiation means includes a plurality of separate radiation sources, a separate filter for each separate source and means for directing radiation from said separate sources through their respective filter to said transmitting section, and said means responsive to an electrical signal includes a circuit for individially energizing said separate sources.

Claim 6

A traffic signal comprising: an elongated enclosure including an elongated radiation transparent section; radiation means mounted within said enclosure for providing an elongated source of visible radiation; a filter means for transmitting differEnt ranges of visible radiation wavelengths corresponding to at least two different colors; means for movably mounting said filter means for movements between said radiation means and said transparent section, and electrical means coupled to said filters means for moving said filter means between said radiation means and said transparent section so that at least two colors of visible radiation can be sequentially transmitted through said transparent section.

Claim 7

A traffic signal comprising: an elongated enclosure including an elongated radiation transparent section; radiation means mounted within said enclosure for providing an elongated source of visible radiation; a filter means for transmitting differEnt ranges of visible radiation wavelengths corresponding to at least two different colors; means for movably mounting said filter means for movements between said radiation means and said transparent section, and electrical means coupled to said filters means for moving said filter means between said radiation means and said transparent section so that at least two colors of visible radiation can be sequentially transmitted through said transparent section.

Claim 8

A traffic signal as defined in claim 5 wherein: said filter means includes indicia that is visible in said transparent section when positioned between said radiation means and said transparent section.

Claim 9

A traffic signal as defined in claim 6 wherein: said indicia transmitts a range of visible radiation wavelengths different from the portion of said filter means surrounding said indicia.

Claim 10

A traffic signal as defined in claim 7 wherein: said indicia forms clear portions of said filter means.

Claim 11

A traffic signal as defined in claim 5 wherein: said source of radiation comprises fluorescent lights, and said filter means includes at least two filters for transmitting radiation corresponding to red and green visible colors.

Claim 12

A traffic signal as defined in claim 5 wherein: said filter means has a form in the shape of a cylinder and surrounds said source; said filter means includes at least two separate filter portions, longitudinally disposed along different portions of said cylinder in parallel with the axis of the cylinder for providing at least two different colors, and said filter means is mounted to rotate about said axis around said radiation source.

Claim 13

A traffic signal as defined in claim 5 wherein: said enclosure is formed with two elongated radiation transparent sections with a separate one of said two transparent sections being located on opposite sides of said enclosure for controlling two opposite directions of traffic, and said filter means is movably mounted for movement between said sections and said radiation source to control the visible color of the radiation transmitted through said transparent sections.

Claim 14

A traffic signal as defined in claim 11 wherein: said filter means has the form of a cylinder and surrounds at least a portion of said radiation source, and includes at least two separate filter portions disposed longitudinally along the circumference cylinder for providing at least two different colors, and said filter means is mounted to rotate along the axis of the cylinder about said radiation source.

Claim 15

A traffic signal comprising: an enclosure including a radiation transparent section; at least two radiation sources mounted within said enclosure for directing radiation through said transparent section; at least two filters for transmitting at least two different colors; means for mounting one of said filters to control the color of the radiation transmitted from one of said sources through said transparent section; means for mounting the other one of said filters to control the color of radiation transmitted from said other source through said transparent section, and electrical means for controlling the energization of said radiation sources so that at least two different colors are sequentially transmitted through said transparent section.

Claim 16

A traffic signal comprising: an enclosure including a radiation transparent section; at least two radiation sources mounted within said enclosure for directing radiation through said transparent section; at least two filters for transmitting at least two different colors; means for mounting one of said filters to control the color of the radiation transmitted from one of said sources through said transparent section; means for mounting the other one of said filters to control the color of radiation transmitted from said other source through said transparent section, and electrical means for controlling the energization of said radiation sources so that at least two different colors are sequentially transmitted through said transparent section.

Claim 17

A traffic signal comprising: an enclosure including a seperate radiation transparent section on opposite sides thereof for controlling two opposite directions of traffic; radiation means mounted within said enclosure for providing at least two visible colors of radiation for transmission through said transparent sections, and means responsive to an electrical signal for sequentially controlling the visible color of radiation to be transmitted through said transparent sections.

Claim 18

A traffic signal comprising: an enclosure including a seperate radiation transparent section on opposite sides thereof for controlling two opposite directions of traffic; radiation means mounted within said enclosure for providing at least two visible colors of radiation for transmission through said transparent sections, and means responsive to an electrical signal for sequentially controlling the visible color of radiation to be transmitted through said transparent sections.