The study for designing the LED tunnel light for highway tunnels

• Main Authors: LAI, JUN-HAO, 賴俊豪
• Other Authors: HSIEH, CHI-CHANG
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/pxw2xb

碩士 === 國立高雄科技大學 === 機械與自動化工程系 === 107 === As archetypal energy-saving products, light-emitting diodes (LEDs) are widely used in various lighting equipment such as medical lighting, indoor lighting, and road lighting equipment because of their excellent light source characteristics, and their use signifies global efforts to achieve environmental protection and energy conservation. However, due to the unique lighting environment in tunnels, special attention must be paid when manufacturing tunnel lighting equipment to avoid problems associated with poor design, such as divergence, offset, and inadequate road illumination and uniformity. Each of these factors directly affects drivers. This study primarily focuses on the interior area of high-speed tunnels and employed LEDs as the light source to design special lighting modules. To solve the problem of insufficient illumination and brightness of LED tunnel lighting, lighting efficiency in tunnels should be improved by shortening the distance between lamps in tunnels. An LED street light module (SmileRay) is used as our basic design architecture. The initial model of the lens is constructed according to the laws of geometric optics by using CREO modeling software, and the optical design simulation function of LightTools was used to design the secondary optical lens and the lightbar light source module; it is also used to modify the lamp mechanism. Next, values for the lens light distribution are input into the DIALux lighting design software to verify the accuracy of the simulation for tunnel illumination specifications, and the lens design is further adjusted on the basis of the result. Finally, the erection mode is optimized. Simulation results indicate that the tunnel lighting module designed in this study can provide 10499 lm at an output of 75 W for each luminaire, 97% optical efficiency of luminaires, and brightness uniformity of 0.755 after the erection mode of the lamp was modified, thus meeting the CIE 88-2004 standards specified for tunnel lighting.