Tilt switch activated light for use with a vehicle egress
View Patent ↗A tilt switch activated light apparatus suitable for use in connection with an egress of a vehicle, the apparatus including a magnet disposed within a cavity of a housing, where the cavity is shaped so that in the event of excessive roll or pitch of the vehicle, the magnet moves to a location adjacent a switch connecting a power source to a light source, causing the switch to close and so activating the light source. An external body, either ferromagnetic or magnetic, and external to the housing and removable therefrom, may be used to hold the magnet inside the cavity in a neutral position, away from the switch, during shipping.
1. An apparatus, comprising:
a housing having at least one exterior wall defining an interior space, the interior space including a cavity of a predetermined size and shape;
a switch, a light source, and an electrical power source, wherein the switch is in electrical communication with the light source and the power source, and wherein the switch includes a ferromagnetic element disposed so that in one position the switch is open and in another position the switch is closed; and
a magnet disposed within the cavity, the magnet having a magnetic field;
wherein the apparatus is provided in a form suitable for use as a component of or an attachment to an egress from a vehicle, and wherein the cavity is shaped and disposed within the housing and relative to the ferromagnetic switch element so that in the event of roll or pitch in excess of a predetermined extent, the magnet moves with the cavity to a location proximate to the ferromagnetic switch element and by magnetic attraction causes the ferromagnetic switch element to move to the closed position, thereby connecting the light source to the power source and so turning on the light source for use as a guide to vehicle occupants in locating the egress.
2. The apparatus of claim 1 , wherein the cavity is filled with a fluid for damping the motion of the magnet disposed in the cavity.
3. The apparatus of claim 1 , further comprising a second switch in spaced apart relation from the other switch and also connected to the power source and to the light source.
4. The apparatus of claim 1 , further comprising an external body, external to and separable from the housing, and further wherein the housing includes an indentation on an outer surface of a shape allowing the external body to be at least partially lodged in the indentation.
5. The apparatus of claim 1 , further comprising a ferromagnetic body fixedly disposed proximate to the switch.