Back to results
US 8,410,949 B2Granted
Emergency exit indicating device and firefighting system having same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorMing-Yang Liao
Life of this patent
Estimating the term…
Abstract
An emergency exit indicating device includes an exit sign and a smoke dispelling system. The exit sign is configured for displaying where an emergency exit is located. The smoke dispelling system is configured for dispelling smoke from around the exit sign in the event of fire.
Claims20
An emergency exit indicating device comprising:
- an exit sign configured for displaying where an emergency exit is;
- and
- a smoke dispelling system configured for dispelling smoke from around the exit sign in the event of fire;
- wherein the smoke dispelling system comprises an air source, a plurality of nozzles, and a nozzle activator, the air source being configured for providing high pressure air to the nozzles, the nozzles being embedded in the exit sign and exposed to an outside of the exit sign, the nozzle activator being configured for activating the nozzles in the event of fire.
1 more element
A firefighting system comprising:
- a smoke detecting device configured for detecting a smoke density of the ambient environment and determining whether a fire exists based on the detected smoke density;
- and
- an emergency exit indicating device comprising:
- an exit sign configured for displaying where an emergency exit is;
- and
- a smoke dispelling system configured for dispelling smoke from around the exit sign when the fire exists;
- wherein the smoke dispelling system comprises an air source, a plurality of nozzles, and a nozzle activator, the air source being configured for providing high pressure air to the nozzles, the nozzles being embedded in the exit sign and exposed to an outside of the exit sign, the nozzle activator being configured for activating the nozzles in the event of fire.
4 more elements
An emergency exit indicating device comprising:
- an exit sign configured for displaying where an emergency exit is, wherein the exit sign comprises a shell, a plurality of light emitting diodes, and a driver, the shell comprises an indicating surface, the light emitting diodes are arranged on the indicating surface in a pictogram form which points out where the emergency exit is, and the driver is configured for driving the light emitting diodes to light up;
- and
- a smoke dispelling system configured for dispelling smoke from around the exit sign in the event of fire, wherein the smoke dispelling system comprises an air source, a plurality of nozzles, and a nozzle activator, the air source is configured for providing high pressure air to the nozzles, the nozzles are mounted at the indicating surface and have first portions thereof embedded in the indicating surface around the plurality of light emitting diodes, and the nozzle activator is configured for activating the nozzles in the event of fire.
Dependencies are inferred from the claim text.