Abstract: An optical valve for use in a lamp of a motor vehicle comprises a main filament, and a sub-main filament. A multi-layer film is coated over a glass tube at the portion corresponding to the sub-main filament to produce yellow light. When driving at night and passing by a motor vehicle coming from the opposite direction, the sub-main filament is heated and produces yellow light which will not daze a driver's eyes, thus preventing dangerous situations to the drivers.

Abstract: A cargo-fastening unit for the roof-carrier is that in a roof-carrier having a horizontal bar being fixed on the roof top of a vehicle and also having a pivotal clamping bar being in parallel to the horizontal bar and being arranged to freely pivot so as to clamp and carry cargo between the bars, the horizontal bar and the clamping bar are respectively sectionalized into two parts at a suitable position to be joined by means of a detachable coupling bar, thereby providing a mechanism of simple construction but being able to change the length of the horizontal bar and the clamping bar in the lateral direction of the cargo as required according to the the width of the cargo so as to keep the cargo from loosening or injuring the cargo or falling off the vehicle due to severe vibrations or impacts applied on to the vehicle in operation.

Abstract: A roof carrier including horizontal struts able to carry and fix in place baggage, a plurality of stands supporting the struts on an automobile, bolts provided in the stands for fixing the struts and stands in position, and a locking device covering the heads of the bolts provided detachably on the struts or stands.

Abstract: A lock unit of a roof carrier of a vehicle which includes a crossbar for placing an object to be carried thereon, a plurality of stands for supporting the crossbar on a vehicle roof, and a rotatable knob mounted on at least one of the stands, for fixing the stands at given positions, on the roof of the vehicle, wherein the knobs include a lock member for preventing rotation of the knobs, the locking member including a cam member, and wherein the knob includes a bottom plate, a rotating member mounted on the plate, a pin member, and a biasing member positioned between the rotating member and the cam member for biasing the pin member into engagement with the cam member.

Abstract: A lock unit for a roof carrier having a crossbar for securely placing a carried object hereon, and a plurality of stands for placing the crossbar on a vehicle roof, including a pivotal cover rod having a first end for supporting the carried object sandwiched between the pivotal rod and the crossbar and which is pivotally supported on a first side end of the crossbar and a hook-like bent portion is provided at a second end of the pivotal cover rod, a lock member provided at a second side end of the crossbar.

Abstract: A mounting device for a fog lamp including a support mounted at an approximate position on a vehicle; rounded protrusions formed on the two sides of the support; a pair of rotating parts having rounded depressions engageable with the protrusions; and a pair of bolts swivelingly connecting the parts with the support; the above-mentioned rotating parts acting a bridges to affix the frame of the fog lamp.

Abstract: A reinforcing device for a roof carrier, which includes a reinforcing member having a crossbar for placing and fixing an object to be carried thereon, a pair of stands for supporting the crossbar, the stands having holes extending therethrough, a pair of mounting members separate from the pair of stands and interconnecting the roof and the pair of stands on the roof, a wire made of a flexible material, mounting metal members respectively coupled to opposite ends of the wire, a screw rod projecting outward from each of the mounting metal members, wherein the screw rods extend through the holes formed in the stands in the vicinity of end portions thereof, and first and second clamp nuts engaged with threaded portions of the screw rods and contacting an outer side portion of the mounting members.