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Wyszukujesz frazę "LED headlights" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Examination of the vehicle light intensity in terms of road traffic safety: a case study
Autorzy:
Vrábel, J.
Rievaj, V.
Synák, F.
Babic, D.
Powiązania:
https://bibliotekanauki.pl/articles/263162.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
halogen headlights
LED headlights
light intensity
road traffic safety
xenon headlights
natężenie
oświetlenie
bezpieczeństwo
ruch drogowy
reflektor
halogen
ksenon
Opis:
Road transport is an essential part of modern life. It brings with itself, besides the desired effects, negative aspects as well. Negative aspect is not only the emissions production but also the traffic accidents occurrence even with tragic consequences. In proportion to traffic intensity, accidents during decreased visibility represent a significant share. A driver has a limited source of information at this time, since only vehicle headlights illuminate the runway and its surroundings. However, these do not only illuminate the roadway ahead of the vehicle, but part of the emitted light also falls into the drivers’ eyes of vehicles in the opposite direction. Thus, the eyes of such glared drivers worse recognize details, or lose the ability to see at all, i.e. vision ability. The level of vision loss depends on the light intensity that falls into the drivers’ eyes in the opposite direction. This light intensity is related not only to the correct headlights alignment (setting) but also to their design. In this paper, three generations of headlights in terms of the light intensity falling into the driver’s eyes of the vehicle in the opposite direction are compared. The headlights alignment of the examined vehicles was checked prior to measurements in accordance with the manufacturer's requirements. Given the fact that intensity of the emitted light is also related to the age of the used source, they have been replaced by the new ones. For the reason of objectivity, examination was performed at night at the New Moon phase, thus it did not light up. The starlight also did not affect the measurement results because it was cloudy, but it did not rain. There were no artificial sources of light near the measuring point.
Źródło:
Archiwum Motoryzacji; 2018, 81, 3; 119-128
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of characteristics and thermal loading of LEB bulbs for automotive headlights
Autorzy:
Mashkov, P.
Gyoch, B.
Ivanov, R.
Powiązania:
https://bibliotekanauki.pl/articles/374509.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
LED auto lamps
LED
headlights
lampy samochodowe LED
reflektory
Opis:
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.
Źródło:
Transport Problems; 2018, 13, 3; 85-95
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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