Why does advocate using LED tunnel light?
Why does advocate using LED tunnel light ? In the past, the traditional high pressure gas discharge light source (HID), such as high pressure sodium lamp (HPS) and metal halide lamp (MH), is the main force of tunnel lighting. The tunnel lighting scheme requires a high minimum illumination to provide a safe environment for users. Lamps must be able to provide high levels of illumination at a considerable distance from the plane, the typical installation height of highway tunnel is 5-7 meters, providing clearance for high side vehicles. HPS and MH are attractive to tunnel lighting scheme designers, providing low unit cost and high illumination. they usually each lamp power up to 400W, to meet the requirements of illumination. However, the disadvantages of HPS and MH are obvious. These two kinds of lamps consume a lot of energy, usually light quality is low, cannot provide uniform illumination in tunnel, and if occurrence breakdown, need costly ma...