|Abstract: ||With the advancement of technology LED lighting, high-power LED chips are increasingly popular, which resulted in more heat generated by LED chips accumulated in the chip, when the LED chip temperature rises relative decrease the luminous efficiency and brightness, along with shortened life expectancy , part of the cooling mechanism to be developed before the new lamp is a very important link; other high-power LED, the light-emitting surface also increases, so must the original point light source at an angle of a surface light source to redesign secondary optics, to meet the lighting requirements for light type, this paper will focus on the above two points, the analysis of high-power LED lighting and optics heat distribution.
This study is on industry-university cooperation, the development of high-power cooling module to heat and light pattern analysis, the first graphics software Solidworks to establish a model of thermal module, and then import within Solidworks built-in heat flow analysis, followed by setting the analysis pattern, material, convection coefficient, etc. ... mesh network division, to be antipyretic cooling module simulation analysis, which also practical for cooling modules to measure temperature at intervals, the analog data and the actual temperature of the cross-over match to confirm the accuracy of the data of the simulation. After the end of the simulation that, without changing the exposure light source plate cooling modules the size, the increase in the number of cooling fins, fin length change, the pitch will help to improve the antipyretic effect, the number of fins 25, the fins fin height and spacing of 8mm to 48mm thermal conductivity of the best!
Another type of analysis on the light, will be based on a wide-angle lens offers an optical analysis, no additional optical lens and lens type, the influence illuminance and light distribution curve, simulation lens placement angle and position of the optical properties caused by the results that the lens was placed in the horizontal direction of the a-type lens module the presentation of the light line more in line with wider roads and street lighting poles spaced far the demand, and the simulation results show that the height of the poles is about 8m above average illuminance street 21.3lux meet the fast road illumination standards 15lux; when the lens horizontal direction and cross the optical lens module type B type of place when applied to the distribution of a height of 4.3m tunnel lights, the tunnel minimum illumination 30lux, from simulation results show the average illuminance 32.19lux compliant illumination standards; additional C-type lens and the carrier plate into a vertical poles placed at suitable height to 6m and the light from a shorter optical type of urban street, general road illumination required 10lux and simulation results the average luminance value of about 11.2lux conform to road illumination standards. In addition a variety of photometric properties of a lens module also meet CNS15233 specification standard value.