Reflective projection sign of reflective material
Road signs are installed, fixed on the road pavement, and projecting from the projection block marking function, commonly known as "spike". The role of road signs can be used to mark the center line on the highway or other road, lane line, edge line; also can be used to mark the corners, ramp, diversion line, road narrows, road obstacles and dangerous road.A projecting signpost with reflective characteristics is of great importance in safety oriented. The road signs reflective high brightness, good warning effect, usually installed in the lane on both sides and the center line, in the night light irradiation can draw the outline of the driver to drive, clear and bright road traffic environment, plays a very important role in safety warning, is a kind of important retroreflective traffic safety facilities that has been widely used in highway and city road in china. The reflective projection sign is based on the different light reflecting principle, which comprises a prism type and a lens type. The reflective protuberant signpost to inverse reflection of the light from the lamp irradiation in the night, usually in the different shapes of the substrate or base plate embedded with a reflective wafer, sometimes it may be pasted with a reflective film on the base. This kind of road signs may have different shapes and materials, such as aluminum or plastics, from the functional perspective is the same, display road profile, divided lane, to the night light reflection, reflective, night vibration prompt functions.
The color of the reflective projection sign usually corresponds to the color of the road traffic marking, mainly white and yellow, and matches with the road traffic markings at night, so as to play a corresponding security role. Red reflective projections are rare and are usually used only in special areas. There is also a commonly known as "cat's eye" projection signs, usually hemispherical sphere, the matrix is glass, the base of the metal surface reflective layer, the use of glass beads reflect the principle of adverse reflection of light. Using different colors of glass or different colors of reflective surface, "cat eye" in the reflection of light, you can form different colors of reflection effect. As shown in Figure 29The reflective protuberant signpost has a certain height, so the surface of general rainwater cannot drown or stay in road signs reflective area, which makes the road signs has a certain condition under rainy night indicator. Therefore, on the road without conditional application of all-weather rainy night reflective marking, a reflective projection sign is pasted, and the utility model can also play the role of all-weather prompting. According to the outline standard setting conditions can be divided into buried in the ground and attached to the post delineator structure attachment type contour mark; according to different shapes can be divided into column, trapezoidal, circular and rectangular column; according to the different characteristics of the contour standard column material, can be divided into ordinary column profile and elastic column contour standard.
1 the structure and composition of the ground outlineIn general, the outline of the surface embedded in the ground has a more uniform specification in china. The utility model is composed of a cylinder and a reflector. Column is a rounded, triangular cross-section column, the top surface of the oblique roadway, body is white, there is a circle of 25cm long black mark on the upper column, a middle reflector inlaid with black marker 18cm * 4cm. The reflector is divided into two white and yellow ones. The white reflector is installed on the right side of the road, and the Yellow reflector is mounted on the left or central divider of the road. The outline shall be made of concrete foundation, and the connection between the column and the foundation shall be assembled. The outline structure embedded in the ground is shown in figure 31.2 the structure and composition of attached contourAn outline mark attached to various buildings consisting of a reflector, a support, and a connecting piece. Different shapes and different connecting ways can be adopted according to the type of the building and the place where it is buried.(1) when the profile is attached to the slot in the middle of the guardrail, the shape of the reflector is trapezoid and the bracket is closed,Fixed on the connecting bolts of the guardrail and the upright post, as shown in figure 32. (2) in the area of frequent fog, sand drift, snow, snow and rainstorm, the outline can be installed on the upper edge of the guardrail (as shown in Figure 33) or on the column of the wave beam guardrail. A circular reflector with a diameter of 10cm is generally used. The contour can be divided into two types: single side reflex (A) and double face reflex (B), and type B is suitable for occasions where the sight of the opposite lane is required (e.g., the central divider), as shown in figure 34. (3) the outline mark attached to the cable guardrail can be fixed to the cable by the clamp, as shown in figure 35.
