Towards thermal model of automotive lamps

Abstract

Automotive lighting systems are constituted of light sources and projection lens system. Thermal effects may induce hot spots on the reflectors and screens. It is essential that temperature of these hot spots doesn't exceed the degradation temperature level of materials. The crucial issue of our work is to model properly the interaction between the radiation emitted by several lamps and the enclosed chamber. In order to develop a reliable numerical model, pertinent input data are required such as filament and glass bulb temperatures. In this study, we focus on the infrared heating modelling of a specific incandescent lamp. As the filament is the main source of heat transfers, an approach is presented for its temperature determination: the "resistivity" method coupled with an optical method.

Young’s modulus of tungsten at elevated temperatures using synchronous laser shadow vibrometry

“…We searched then for the best lamp with nearly ideal geometry and power that met our requirements. We selected a cheap P21W12V automotive incandescent lamp previously studied in many works before [54][55][56][57][58][59][60]. This lamp still in production and still sold in worldwide market.…”

Experimental Investigation of Tubular Halogen Lamp Thermal Conditions

“…марках проволоки, используемых при производстве ламп типа КГТ, массовая доля вольфрама составляет не менее 99,95 %5 . Нить накаливания является проводником, нагреваемым за счет эффекта Джоуля, и связь электрического сопротивления нити c удельным электрическим сопротивлением вольфрама описывается формулой[12]…”