Abstract: Provided is a Raman scattering measurement apparatus including a light source which emits light to smoke particles, a filter configured to block light which is incident to the smoke particles and passes through the particle and to allow Raman scattered light to pass therethrough, and a photodetector which detects the Raman scattered light passing through the filter in order to distinguish fire smoke generated due to a true fire from non-fire smoke generated due to daily life or industrial activity. The present invention also provides a fire determination apparatus including a unit which reads a Raman shift from Raman scattered light detected by the photodetector of the Raman scattering measurement apparatus, estimates a smoke component from the read Raman shift, and determines fire/non-fire from the estimated smoke component and a method thereof.

Abstract: Provided is a pinion bearing that may be coupled to a pinion shaft of a vehicle. The pinion bearing may include at least one inner ring mounted on and coupled to a pinion shaft; an outer ring positioned outside the inner ring in a radial direction; and a plurality of rolling elements configured to rotatably support the inner ring relative to the outer ring. The outer ring may i a flange portion formed to extend outward in the radial direction, a first extension portion formed to extend from the flange portion toward a differential gear unit, and a second extension portion formed to extend from the flange portion toward an opposite side of the differential gear unit, and a heat dissipation fin(s) may be formed on the second extension portion to protrude outward in the radial direction.

Abstract: A sealing member of a rolling bearing is formed in a structure in which an elastic sealing portion is attached to a frame, and the elastic sealing portion may comprise a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame. The first sealing portion may be inserted into and mounted to a coupling groove formed in the second member, and the second sealing portion may comprise an axial sealing lip extending in the axial direction from the frame and a radial sealing lip extending in the radial direction from the frame. The axial sealing lip and the radial sealing lip of the second sealing portion may be positioned adjacent to the first member and may be configured to perform a sealing in a non-contact manner.