Abstract: An external vehicle notification information system may include a projector illuminating generated information using a light source, a lens transmitting the information, a reflector reflecting partial information of the information toward the lens, and a screen displaying the partial information transmitted from the lens.

Abstract: A composite product having a junction structure includes a first unit formed of a composite material, a first connector formed of a metal and provided with one end inserted into one end of the first unit and formed integrally with the first unit and another end extending outwards from the first unit, a second unit formed of a composite material, and a second connector formed of a metal and provided with one end inserted into one end of the second unit and formed integrally with the second unit and another end extending outwards from the second unit, wherein the other end of the first connector and the other end of the second connector are joined and fixed by welding under a condition that the ends of the first unit and the second unit are opposite each other adjacently.

Abstract: An external vehicle notification information system may include a projector illuminating generated information using a light source, a lens transmitting the information, a reflector reflecting partial information of the information toward the lens, and a screen displaying the partial information transmitted from the lens.

Abstract: Discribed is an impact-absorbing reinforcement structure for center pillars including a high-strength section, a medium-strength section and a low-strength section, divided from each other and integrally formed. The high-strength section is composed of carbon fiber reinforced plastic (CFRP) formed by impregnating carbon fiber with a resin and is disposed at the upper region of a vehicle center pillar; the low-strength section is composed of a composite material formed by impregnating carbon fiber and olefin-based fiber with a resin, has lower strength than the high-strength section and is disposed at a lower region of the vehicle center pillar; and the medium-strength section is composed of a composite material formed by impregnating carbon fiber and olefin-based fiber with a resin, has strength between the strength of the high-strength section and the low-strength section and is disposed at a central region of the vehicle center pillar.

Abstract: A vehicular underframe structure may an include a lower panel including a composite material and having a central portion curved upwards along a longitudinal direction thereof; an upper panel including a composite material and combined on the lower panel wherein an undersurface thereof faces an upper surface of the lower panel with an internal compartment formed therebetween; and a rib portion provided in the internal compartment and having a lower rib integrally protruding upwards from the upper surface of the lower panel and an upper rib integrally protruding downwards from the undersurface of the upper panel.

Abstract: A vehicular underframe structure may an include a lower panel including a composite material and having a central portion curved upwards along a longitudinal direction thereof; an upper panel including a composite material and combined on the lower panel wherein an undersurface thereof faces an upper surface of the lower panel with an internal compartment formed therebetween; and a rib portion provided in the internal compartment and having a lower rib integrally protruding upwards from the upper surface of the lower panel and an upper rib integrally protruding downwards from the undersurface of the upper panel.

Abstract: Disclosed is an impact-absorbing reinforcement structure for center pillars including a high-strength section, a medium-strength section and a low-strength section, divided from each other and integrally formed. The high-strength section is composed of carbon fiber reinforced plastic (CFRP) formed by impregnating carbon fiber with a resin and is disposed at the upper region of a vehicle center pillar; the low-strength section is composed of a composite material formed by impregnating carbon fiber and olefin-based fiber with a resin, has lower strength than the high-strength section and is disposed at a lower region of the vehicle center pillar; and the medium-strength section is composed of a composite material formed by impregnating carbon fiber and olefin-based fiber with a resin, has strength between the strength of the high-strength section and the low-strength section and is disposed at a central region of the vehicle center pillar.

Abstract: A roof for a vehicle is provided. The roof includes a roof panel that is formed of a composite material, a reinforcing frame that is attached onto a lower surface of the roof panel and formed of a composite material and a plurality of first reinforcing members that are connected to the reinforcing frame within the reinforcing frame and disposed to be continuously spaced apart from each other. A plurality of second reinforcing members are connected to the reinforcing frame while intersecting with the first reinforcing members and are disposed to be continuously spaced apart from each other to form a truss structure together with the first reinforcing members within the reinforcing frame.

Abstract: A composite product having a junction structure includes a first unit formed of a composite material, a first connector formed of a metal and provided with one end inserted into one end of the first unit and formed integrally with the first unit and another end extending outwards from the first unit, a second unit formed of a composite material, and a second connector formed of a metal and provided with one end inserted into one end of the second unit and formed integrally with the second unit and another end extending outwards from the second unit, wherein the other end of the first connector and the other end of the second connector are joined and fixed by welding under a condition that the ends of the first unit and the second unit are opposite each other adjacently.

Abstract: A panel with pattern block bead for a car body includes a plurality of beads. The panel is divided into four division panels by a first substantially horizontal reference line and a first substantially vertical reference line each passing through a center of the panel. One of the beads is formed at a center of each of the division panels.

Abstract: A panel with pattern block bead for a car body includes a plurality of beads. The panel is divided into four division panels by a first substantially horizontal reference line and a first substantially vertical reference line each passing through a center of the panel. One of the beads is formed at a center of each of the division panels.

Abstract: Provided are a passive optical network system and a method of transmitting a broadcasting signal in the same system. A central office (CO) generates a broadcasting signal and a downstream optical data signal using a coding method guaranteeing a run-length, multiplexes the downstream optical data signal and the broadcasting signal, and transmits the multiplexed downstream optical data signal and broadcasting signal. A remote node (RN) transmits the multiplexed downstream optical data signal and broadcasting signal received from the CO to one or more optical network units (ONUs). A gain medium, which is located on a transmission line between the CO and the RN, amplifies the broadcasting signal using the downstream optical data signal as a pump light source. Accordingly, a high gain can be obtained by amplifying the broadcasting signal using the gain medium located on the transmission line without a separate pump light source.