The present invention relates to a device and a method for guiding evacuation by using laser and, specifically, to a device and a method wherein, in the case of fire or power outage, laser beams can be emitted to guide an evacuation direction or an emergency exit position. The present invention may comprise: a laser beam generation module for emitting laser beams; a rotation module coupled to the laser beam generation module so as to rotate the laser beam generation module; and a control module for controlling an operation of at least one of the laser beam generation module and the rotation module, wherein the control module controls at least one of the laser beam generation module and the rotation module on the basis of a driving mode configured by a user.

The present invention relates to a device and a method for guiding evacuation by using laser and, specifically, to a device and a method wherein, in the case of fire or power outage, laser beams can be emitted to guide an evacuation direction or an emergency exit position. The present invention may comprise: a laser beam generation module for emitting laser beams; a rotation module coupled to the laser beam generation module so as to rotate the laser beam generation module; and a control module for controlling an operation of at least one of the laser beam generation module and the rotation module, wherein the control module controls at least one of the laser beam generation module and the rotation module on the basis of a driving mode configured by a user.

A capsule is provided that aligns with at least one light source. The capsule includes a rim having its opaqueness interrupted to as to form at least four transparent portions. The capsule is capable of being oriented according to at least two positions: a first position in which two of the at least four portions, simultaneously let through light coming from the at least one light source; and a second position in which the rim blocks light coming from the at least one light source.

A capsule is provided that aligns with at least one light source. The capsule includes a rim having its opaqueness interrupted to as to form at least four transparent portions. The capsule is capable of being oriented according to at least two positions: a first position in which two of the at least four portions, simultaneously let through light coming from the at least one light source; and a second position in which the rim blocks light coming from the at least one light source.

The invention provides a rock wall closure detection apparatus which includes an elongate member, variably extensible between a first wall and a second wall Of an underground excavation which comprises of a first and a second segment which are resiliently axially compressible relatively to one another when the waits close and an indicator module which produces a warning signal when actuated, attached to the first segment and an actuator attached to the second segment wherein on compression of the member, the actuator moves relatively to the module to actuate the module to produce the warning signal.