Abstract: An electronic pre-charge relay device according to an embodiment of the present invention comprises: a control signal input unit for inputting a control signal for turning on and off; an AC conversion unit for converting the control signal into an AC signal; an insulating transform unit for boosting the converted AC control signal to a predetermined voltage level; a rectifying and smoothing unit for converting the boosted AC control signal into a DC input signal; a power semiconductor switch having a gate used to turn on and off to supply electrical energy to a load in relation to the control signal; and a gate signal generation unit for generating at least one gate signal suitable for the power semiconductor switch by using the converted DC input signal.

Abstract: An apparatus and a method of receiving/transmitting data in an electronic device are provided. A remaining capacity of a battery mounted to the electronic device is checked. When the remaining capacity of the battery is smaller than a predetermined reference value, a communication module takes over a control with regard to data reception/transmission. Also, power supply to the communication module and a memory unit is maintained, while power supply to the rest of components of the electronic device including a central processing unit is cut off. Accordingly, data can be received/transmitted as much as possible, and reception/transmission of data which has not been completely received/transmitted can be automatically performed when power is recovered.

Abstract: A helmet shield, in which the edge of the shield has a curved portion 10 the same as a top-to-bottom curved shield and its central portion is formed so as to have a rectilinear portion 20 as in a top-to-bottom rectilinear shield so that transparent films can be easily attached and the effect of wind during high-speed driving can minimized, is disclosed.

Abstract: A shielding device for a helmet installed so as to secure a sufficient field of vision as well as protect the face portion of the helmet wearer is disclosed. The shielding device for a helmet comprises a shield 10 to cover the opened portion of the helmet body 1; a sun visor 20 which is placed on the inside of the shield 10 to shut off sunlight; a visor 30 which is placed between the shield 10 and the sun visor 20 to block the inflow of rainwater; a hinge joining means 40 which pivotably supports both ends of the shield 10 and sun visor 30 so that they can pivot up and down in one body and/or individually; and a rotation interruption means 50 which obstructs the shield 10, sun visor 20 and visor 30 from descending due to self weight as well as makes the shield 10 be pivoted intermittently with respect to the visor 30.

Abstract: Disclosed is a helmet or a safety cap for protecting the rider's head and a method of manufacturing the same, in which the main body of the helmet has a dual-structure so as to reduce work process when an outer surface of the helmet is painted, and weight thereof. The main body of the helmet has a dual-structure in that an outer surface thereof is formed of a thermoplastic for an aesthetic enhancement and an inner surface thereof is formed of FRP or a mixture of aramide fiber, polyethylene fiber, vinylon, carbon fiber. Thus-formed dual structure of the helmet body contributes to enhancement in impact resistance and convenience in painting, decreasing an overall weight of the helmet.

Abstract: A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Abstract: Disclosed is a helmet or a safety cap for protecting the rider's head and a method of manufacturing the same, in which the main body of the helmet has a dual-structure so as to reduce work process when an outer surface of the helmet is painted, and weight thereof. The main body of the helmet has a dual-structure in that an outer surface thereof is formed of a thermoplastic for an aesthetic enhancement and an inner surface thereof is formed of FRP or a mixture of aramide fiber, polyethylene fiber, vinylon, carbon fiber. Thus-formed dual structure of the helmet body contributes to enhancement in impact resistance and convenience in painting, decreasing an overall weight of the helmet.

Abstract: Disclosed is a helmet or a safety cap for protecting the rider's head and a method of manufacturing the same, in which the main body of the helmet has a dual-structure so as to reduce work process when an outer surface of the helmet is painted, and weight thereof. The main body of the helmet has a dual-structure in that an outer surface thereof is formed of a thermoplastic for an aesthetic enhancement and an inner surface thereof is formed of FRP or a mixture of aramide fiber, polyethylene fiber, vinylon, carbon fiber. Thus-formed dual structure of the helmet body contributes to enhancement in impact resistance and convenience in painting, decreasing an overall weight of the helmet.

Abstract: A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Abstract: An improved prefabricated elevated highway structure and a construction method thereof by which an elevated highway can be more easily and rapidly constructed without causing traffic congestion at a construction site, which highway includes an underground section for stably supporting the elevated highway and for effectively distributing the weight of the same to the ground; a plurality of support sections spaced from one another along a road on which the prefabricated elevated highway is constructed; a pavement section formed on the upper portion of the support sections; and a wall section formed at both sides of the road and along the pavement section.