Patent ID: 7993073

Claim:
A road marker comprising: an upper housing having a cylindrical shape, and having a wing portion formed along an upper exterior circumference thereof and receiving a reflector and a guiding surface formed as a stepped surface from a lower interior circumference thereof; a slider having a cylindrical shape, and having a socket housing disposed inside thereof and integrally formed with an upper end thereof, a seal mounted along an upper exterior circumference thereof and contacting an interior circumference of the upper housing, and a stopping protrusion formed along a lower exterior circumference thereof so as to be guided along the guiding surface, the slider being inserted into and being slidably mounted in the upper housing; a storage battery case mounted in the socket housing; a transparent cover comprising a rounded upper surface and a frame insert groove having a predetermined shape and formed along the upper surface thereof, the transparent cover being engaged to an upper circumference of the slider; a reinforcing frame having a predetermined shape and insertedly mounted in the frame insert groove of the transparent cover; a guide cover disposed at a lower portion of the upper housing, and having a penetration hole formed at a middle portion thereof, a cylindrical guider formed upwardly at an upper circumference of the penetration hole and guiding the interior circumference of the slider, and a plurality of air holes formed along a circumference of the cylindrical guider; a lower housing having a cylindrical shape opened upwardly, and having a mounting end integrally formed with a mounting groove formed inwardly at an upper exterior circumference thereof so as to be engaged to the lower portion of the upper housing together with the guide cover, a barrier rib formed therein and partitioned into an inner chamber and an outer chamber in which a predetermined negative pressure is generated, and check valves corresponding respectively to the inner chamber and the outer chamber mounted at a lower surface thereof; a sealing tube formed as a rubber tube with a bellows shape, and having an upper end sealingly mounted at the socket housing of the slider together with the storage battery case through the penetration hole of the guide cover, an extended end formed at one side of an external circumference thereof and insertedly mounted between the lower housing and the lower surface of the guide cover, and an air pathway formed along an edge of the extended end and corresponding to the air hole; a spring, in the upper housing, interposed between the lower surface of the socket housing and a spring support surface in the cylindrical guider of the guide cover, and exerting elastic restoring force on the slider; and light emitting means mounted on the slider, supplying electric power charged in a solar cell module to a light emitting element, and emitting light to the exterior through a transparent cover.