20090066522 | Emergency guidance lamp system for guiding to nearest exit in the event of fire - An emergency guidance lamp system for guiding to the nearest exit in the event of a fire is provided. A fire detection sensor is installed at a specific region such as ceilings or passages of tunnels or large buildings, and detects a fire occurrence and sends a corresponding detection signal. A central control unit receives the detection signal from the fire detection sensor, judges a situation on the fire occurrence based on simulation result data of various numbers of cases of fire occurrence that have been previously performed and stored in an internal memory, and sends red and green lighting control signals most suitable for each guidance lamp apparatus installed at the site. A guidance lamp apparatus is installed on the ceiling, wall surface, or bottom surface of a passage or the like of tunnels or large buildings, and has a red lighting unit and a green lighting unit provided at the body thereof. | 03-12-2009 |
20090064602 | Earthquake-resistant flat expansion joint using hinge - An earthquake-resistant flat expansion joint using a hinge is provided which includes an expansion joint main body disposed between opposite ends of deck slabs of a bridge or an elevated road, hinged to one side of the deck slab at its one end to enable behavior in X, Y and Z-axis directions, and expanded or shrunk depending on temperature variation and vibrations due to earthquakes to be moved in the X, Y and Z-axis directions, an expansion/shrinkage member connected to one end of the expansion joint main body to accommodate the behavior in X, Y and Z-axis directions due to expansion and shrinkage of the expansion joint main body caused by temperature variation and occurrence of the earthquakes, a hinge shaft support member installed at one end of the deck slab to support a lower part and side parts of a hinge shaft part of the expansion joint main body, an expansion joint support member installed at one end of the other deck slab to support lower parts of an expansion part of the expansion joint main body and the expansion/shrinkage member, anchor bolts for fixing the hinge shaft support member and the expansion joint support member to the opposite deck slabs, and a rubber seal disposed under the expansion joint main body and detachably installed at a space between both opposite ends of the deck slabs to collect rainwater and foreign substances. | 03-12-2009 |