High intensity navigation light
First Claim
Patent Images
1. A watertight light fixture for use in preventing collision at sea, said light fixture comprising:
- a rigid metal base member adapted to be mounted on a ship or vessel;
a hollow glass globe formed with a closed upper end portion and an open lower end, said globe having light transmissivity characteristics that vary in amount and chromaticity with changes of temperature and which lie in predetermind desired ranges only when the temperature of said globe is below a predetermined temperature;
means, cooperating with said globe and said base member, for securing said open end of said globe against said base member in a direct heat transferring relation thereto;
incandescent lamp means, disposed within said globe, for emanating light energy including light within said predetermined range of chromaticity;
heat collector means, disposed within the upper region of said globe and adjacent to the inner surface of said closed upper end portion of said globe, for extracting thermal energy therefrom; and
heat conductor means, connected between said heat collector means and said base member, for transferring said thermal energy to said base member for dissipation to a cooler ambient medium, whereby said globe is maintained below said predetermined temperature.
0 Assignments
0 Petitions
Accused Products
Abstract
A high intensity running light fixture capable of submersion to substantialepths includes tungsten-halogen lamps housed in glass globe sealed to a heat dissipating base. The fixture avoids reduction in light transmittance of the globe by the improvement wherein a finned heat collector is disposed in the upper regions of the globe, with fins in close proximity to the inner surface thereof, and is connected by thermally conductive pillars to the base.
-
Citations
10 Claims
-
1. A watertight light fixture for use in preventing collision at sea, said light fixture comprising:
-
a rigid metal base member adapted to be mounted on a ship or vessel; a hollow glass globe formed with a closed upper end portion and an open lower end, said globe having light transmissivity characteristics that vary in amount and chromaticity with changes of temperature and which lie in predetermind desired ranges only when the temperature of said globe is below a predetermined temperature; means, cooperating with said globe and said base member, for securing said open end of said globe against said base member in a direct heat transferring relation thereto; incandescent lamp means, disposed within said globe, for emanating light energy including light within said predetermined range of chromaticity; heat collector means, disposed within the upper region of said globe and adjacent to the inner surface of said closed upper end portion of said globe, for extracting thermal energy therefrom; and heat conductor means, connected between said heat collector means and said base member, for transferring said thermal energy to said base member for dissipation to a cooler ambient medium, whereby said globe is maintained below said predetermined temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A navigation light fixture including a heat conductive metal base, a dome-shapted globe of colored glass mounted on said base, and a high intensity incandescent lamp disposed within said globe, wherein the improvement comprises:
-
a heat collector disposed in said globe and adjacent to the inner surface of the upper portion thereof; heat conductive column means supporting said heat collector relative to said base and operative to conduct thermal energy from said collector to said base; and said base comprising heat dissipating fins thereon for effecting transfer of said thermal energy to ambient air, whereby said glass globe is maintained at a temperature below a predetermined temperature above which light of predetermined chromaticity characteristics that is transmitted through said globe from said lamp is reduced below a predetermined critical value. - View Dependent Claims (9, 10)
-
Specification