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Vehicle headlights with ventilation system

A technology of headlights and ventilation holes, applied in the direction of headlights, road vehicles, vehicle parts, etc., can solve the problems of no air circulation, internal parts of the casing that hinder air circulation, etc.

Active Publication Date: 2021-07-13
PEZHO SITROEN AUTOMOBILS SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this solution has disadvantages similar to those of the preceding solutions: there is a risk of water entering the housing through outwardly oriented openings, there is no air circulation when parked, and there are housing internals that impede air circulation

Method used

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  • Vehicle headlights with ventilation system
  • Vehicle headlights with ventilation system
  • Vehicle headlights with ventilation system

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] FIG. 1 shows a schematic cross-sectional view of an embodiment of a vehicle headlamp 10 according to the invention with a duct 11 independent of any other inside the housing 5 of the headlamp 10 Components. This duct 11 has, for example, a bore hole with a diameter of between 5 mm and 7 mm, preferably 6 mm, and between an inlet 11e connected to the hole 6a of the ventilation unit 6 and an end outlet 11s connected to the lower part 8i of the reflector 8 A constant cross section (approximately 7 to 10 mm in diameter, preferably 8.3 to 8.5 mm in diameter).

[0036] The ventilation unit 6 is placed on the inside of the vehicle "I" and therefore on the side opposite the glass 4 which forms the wall for enclosing the headlamp 10 which gives the exterior "E" of the vehicle.

[0037] like Figure 1A The coupling between the inlet end 11e of the duct 11 and the unit 6 is carried out on a cylindrical joint 6b formed on the side 6c of the unit 6 and integrated with the air inlet ...

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Abstract

The invention aims to optimize the air circulation by directing the air to the glass (4) closest to the headlamp (10), while completely avoiding the risk of water entering the housing (5). To this end, the invention employs a solution of allowing air to enter the rear of the housing (5) in the (A1) headlamp. According to one embodiment, a headlamp intended to be inserted in a motor vehicle comprises a housing (5) forming a housing for a light source (2), a glass (4), a reflector (8 , 8a, 8i), and the ventilation hole (6a) of the unit (6) configured on the wall of the housing (5). The headlamp comprises a duct (11) having an inlet (11e) and an outlet (11s), the duct being coupled with the air vent (6a) through its inlet (11e), and the outlet (11s) of the duct being arranged at the position closest to the glass (4). The air (A2) thus travels to the point closest to the lower part of the glass (4).

Description

technical field [0001] The present invention relates to a vehicle headlamp equipped with a ventilation system capable of preventing condensation of moisture or significant heating of the air inside a housing in which the headlamp is housed. [0002] In a main, but not exclusive application, the present invention relates to the field of motor vehicles, whose headlamps are sometimes in wet environments (rain, fog or wash-off) and need to be able to quickly vent moisture entering the headlamp housing. In fact, the headlamp housing cannot be completely sealed due to temperature changes resulting in the start-stop transition of the headlamp that is to be absorbed in the pressure change. Furthermore, the temperature change at the time of stopping causes water vapor to condense on the glass. [0003] The headlamp housing is therefore usually provided with air openings in the abri de l'eau. However, it is still difficult to remove the moisture and water entering the housing and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/50F21V15/02F21V19/00B60Q1/04F21V31/03F21W107/10F21W102/00
CPCB60Q1/04F21V15/02F21V19/00F21V33/0088F21S41/00F21S45/33
Inventor V·莫尔托F·F·卡塞伦A·M·O·伊巴涅斯
Owner PEZHO SITROEN AUTOMOBILS SA
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