The deployable stop sign for use with a traffic light during power loss comprises an enclosure, a traffic sign, a weight, a pair of electromagnets, and a sign retractor. The deployable stop sign for use with a traffic light during power loss may be coupled to a span wire or other structure supporting one or more traffic signals. A loss of power may deploy the traffic sign by deenergizing the pair of electromagnets and releasing the weight which may pull the traffic sign out of the enclosure. A restoration of power may energize the sign retractor to pull the traffic sign back into the enclosure and may energize the pair of electromagnets to hold the traffic sign within the enclosure.

The deployable stop sign for use with a traffic light during power loss comprises an enclosure, a traffic sign, a weight, a pair of electromagnets, and a sign retractor. The deployable stop sign for use with a traffic light during power loss may be coupled to a span wire or other structure supporting one or more traffic signals. A loss of power may deploy the traffic sign by deenergizing the pair of electromagnets and releasing the weight which may pull the traffic sign out of the enclosure. A restoration of power may energize the sign retractor to pull the traffic sign back into the enclosure and may energize the pair of electromagnets to hold the traffic sign within the enclosure.

An image display device is disclosed in which electrical connection to a rotary body is reliably maintained during rotation of the rotary body and supply of power and transmission and reception of a signal are stabilized. Since transmission and reception of a signal between a communication transmitter and a communication receiver are implemented through a cavity formed in a motor, introduction of an external signal is blocked, and thus security and control stability are ensured. Even when a rotary module rotates at a high speed, damage thereto due to friction is prevented, and thus the durability thereof is ensured. Rotation of the rotary module is stabilized through structural stabilization.

An image display device is disclosed in which electrical connection to a rotary body is reliably maintained during rotation of the rotary body and supply of power and transmission and reception of a signal are stabilized. Since transmission and reception of a signal between a communication transmitter and a communication receiver are implemented through a cavity formed in a motor, introduction of an external signal is blocked, and thus security and control stability are ensured. Even when a rotary module rotates at a high speed, damage thereto due to friction is prevented, and thus the durability thereof is ensured. Rotation of the rotary module is stabilized through structural stabilization.