BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded view to show the cover and the pipe of the surface cooling device of the present invention;
FIG. 2 is a perspective view to show the surface cooling device of the present invention;
FIG. 3 is an end cross sectional view to show the surface cooling device of the present invention;
FIG. 4 shows another embodiment of the surface cooling device wherein the outlets include guide surfaces;
FIG. 5 is an enlarged view to show the outlet with guide surfaces, and
FIG. 6 is an end view to show the nozzle spray water out from the outlet in FIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 1 to 3, the surface cooling device of the present invention comprises a cover 10 which includes a curved outer surface and is made by hard material such as plastic the cover 10 includes a plurality of through holes 15 and bolts 16 extend through the through holes 15 and are fixed to the surface such as the road surface. A groove 11 is defined in an underside of the cover 10 and a pipe 12 is engaged with the groove 11. A plurality of nozzles 14 are rotatably connected to the pipe 12 such that water can be ejected out from the nozzles 14. A plurality of outlets 13 are defined through the cover 10 and communicate with the groove 11. The nozzles 14 are rotatably engaged with the outlets 13. Each of the outlets 13 includes an enlarged top opening in the outer surface of the cover 10 and the nozzles 14 are allowed to change its spraying directions within the outlets 13.
The cover 10 includes a plurality of anti-slip ridges 18 extending from the outer surface thereof and a plurality of reflection pieces 17 are connected on the outer surface of the cover 10. The reflection pieces 17 acknowledge the drivers where the covers 10 are located.
The water in the pipe 12 can be properly pressurized so that the water is ejected from the nozzles 14 in a form of small particles which can damp the road surface while no water accumulation in recessed area of the road.
As shown in FIGS. 4 to 6, another embodiment of the cover is disclosed wherein each of the outlets 13 is an elongate recess which includes two guide surfaces 19 which extend from a center of the cover 10 toward two long sides of the cover 10 in an acute angle relative to the underside of the cover 10. The area of each of the guide surfaces 19 increases in radial direction. The wide-opened outlets 13 allow the nozzles 14 to spray within a wider range.
The pipe 12 can be protected by the cover 10 which can be easily fixed on the road surfaces, the water particles reduce dust in the air especially in dry and windy days.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.