Investigation of Characteristics and Thermal Loading of Led Bulbs for Automotive Headlights 

Abstract

The aim of the study is related to obtain real data for the LEDs' thermal load and characteristics of several LED lamps types H4 and H7 for automotive headlights with different cooling system.Power consumption, temperature regimes of the LEDs' operation, lamps' radiation spectral distribution, and luminous flux of lamps for automobile headlights with active and passive cooling system at different ambient temperatures have been investigated. The obtained data under real conditions of operation in several cars have been verified. The results are compared with the data in promotional materials and the requirements of Regulations of the United Nations Economic Commission for Europe. Studies enable to evaluate the feasibility, advantages and disadvantages of LED lamps of this type when replacing standard halogen lamps in headlights.

Energy consumption of auxiliary systems of electric cars

“…The calculations show that the maximal energy consumption of a light system using conventional lamps in night travel is about 150 Wh/100km. The usage of LED-lamps decreases the consumption 2,2 -3,8 times [2,4,6,12,13].…”

Development of Radiator with Thermoplastic Polymer and Insert-Molded Aluminum Alloy Parts for Light-Emitting Diode Headlights

“…LED systems also provide benefits pertaining to human factors; for example, they can increase peripheral visual performance by reducing glare, thereby increasing customer demand for such lights. The design of headlight low beams must comply with the ECE R112 regulation [31,32]. Another notable point is that the optical design of headlights can potentially be applied to other light sources because the dimensions of an LED die are considerably smaller than those of a conventional light source [33][34][35].…”