An emergency system for a vehicle integrates many disparate equipment into single housing, including the power supply for the equipment. In one embodiment of the invention, the emergency system is a light bar. The light bar houses a power source comprising solar cell panels, a Lithium-Ion battery pa
An emergency system for a vehicle integrates many disparate equipment into single housing, including the power supply for the equipment. In one embodiment of the invention, the emergency system is a light bar. The light bar houses a power source comprising solar cell panels, a Lithium-Ion battery pack and a connection to an external supply such as the vehicle's electrical power. Energy for operating the light bar is provided by one or more of the power sources, depending on operating conditions of the light bar and each of the power sources.
대표청구항▼
1. A system for use by a vehicle, the system comprising: an emergency device for mounting to the vehicle, including at least one warning light and a rechargeable power source disposed within the emergency device for powering the at least one warning light;a solar energy source for converting solar e
1. A system for use by a vehicle, the system comprising: an emergency device for mounting to the vehicle, including at least one warning light and a rechargeable power source disposed within the emergency device for powering the at least one warning light;a solar energy source for converting solar energy into electrical energy associated with the emergency device; anda device connecting the solar energy source and the rechargeable power source to control the flow of energy from the solar energy and rechargeable power sources to the at least one warning light such that the energy from the solar energy source charges the rechargeable power source and powers the at least one warning light;wherein a charge is supplied from the solar energy source associated with the emergency device to a power source for the vehicle that is external to the emergency device, andwherein the power source for the vehicle that is external to the emergency device provides a substantially continuous and substantially constant charge to the rechargeable power source at a lower charge rate than provided by the solar energy source to the rechargeable power source, wherein the power source for the vehicle that is external to the emergency device supplements the charge provided to the rechargeable power source by the solar energy source. 2. The system of claim 1, wherein the charge is supplied from the solar energy source to the power source for the vehicle that is external to the emergency device when the at least one warning light is not operating. 3. The system of claim 1, further comprising a trickle charging source separate from the solar energy source, wherein the trickle charging source charges the rechargeable power source from the power source for the vehicle that is external to the emergency device. 4. The system of claim 1, further comprising: a control interface in an interior of the vehicle in communications with the emergency device for controlling the at least one warning light. 5. The system of claim 4, further including a light sensor for sensing an illumination condition, wherein the control interface automatically selects at least one of the rechargeable power source, the solar energy source, and the power source for the vehicle that is external to the emergency device to power the at least one warning light based on the sensed illumination condition. 6. The system of claim 4, wherein the control interface includes a control switch that selects at least one of the rechargeable power source, the solar energy source, and the power source for the vehicle that is external to the emergency device to power the at least one warning light. 7. The system of claim 6, wherein the control switch includes: a first position for selecting at least one of the solar energy source and the rechargeable power source to power the at least one warning light;a second position for turning off the emergency device; anda third position for selecting the power source for the vehicle that is external to the emergency device to power the at least one warning light. 8. The system of claim 1, further including a battery charger for receiving power from at least one of the solar energy source and the power source for the vehicle that is external to the emergency device so as to charge the rechargeable power source. 9. The system of claim 8, further including a voltage regulator to regulate the power provided for the at least one warning light from at least one of the rechargeable power source, the solar energy source, and the power source for the vehicle that is external to the emergency device. 10. The system of claim 1, wherein the power source for the vehicle that is external to the emergency device is a vehicle battery associated with the vehicle's power train. 11. The system of claim 1, wherein the emergency device further includes a housing and the solar energy source includes one or more solar panels disposed on an outer surface of the housing. 12. The system of claim 1, wherein the power source for the vehicle that is external to the emergency device supplements the charge provided to the rechargeable power source by way of one or more of: a wired connection between the rechargeable power source and the power source for the vehicle that is external to the emergency device via a diode that prevents current flow from the rechargeable power source to the power source for the vehicle that is external to the emergency device; anda wireless connection between the rechargeable power source and the power source for the vehicle that is external to the emergency device via two electromagnetic coils. 13. A light bar for mounting to a roof of a vehicle, the light bar comprising: a closed housing containing a plurality of warning lights intended to warn anyone in proximity to the light bar of a dangerous condition associated with the vehicle;a rechargeable power supply mounted within the closed housing;a solar-electrical energy source; anda power controller for controlling a flow of energy from the rechargeable power supply and the solar-electric energy source to the plurality of warning lights so that the energy from the solar electric energy source both powers the plurality of warning lights and recharges the rechargeable power supply,wherein a charge is supplied from the solar-electrical energy source to a power source for the vehicle that is external to the light bar, andwherein the power source for the vehicle that is external to the light bar provides a substantially continuous and substantially constant charge to the rechargeable power supply at a lower charge rate than provided by the solar-electrical energy source to the rechargeable power supply, wherein the power source for the vehicle that is external to the light bar supplements the charge provided to the rechargeable power supply by the solar-electrical energy source. 14. The light bar of claim 13, wherein the charge is supplied from the solar-electrical energy source to the power source for the vehicle that is external to the light bar when the plurality of warning lights are not operating. 15. The light bar of claim 13, wherein the power source for the vehicle that is external to the light bar is a vehicle battery associated with the vehicle's power train. 16. The light bar of claim 13, further comprising a trickle charging source separate from the solar-electrical energy source, wherein the trickle charging source charges the rechargeable power supply from the power source for the vehicle that is external to the light bar.
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