Automotive light

FIELD: physics.

SUBSTANCE: light comprises casing accommodating light source, reflector and protective glass. Protective glass comprises suction and pressure spring-loaded valves and bypass channel arranged along vertical axis. Bypass channel is arranged at bottom point of vertical axis and pressure valve located there above and suction valve arranged above.

EFFECT: higher reliability.

1 dwg

 

The invention relates to lighting, in particular, to the design lights for vehicles, and can be used in devices for lighting at night in various industries and in military equipment.

Known floodlight, comprising a housing containing the light source in the form of carbon electrodes and reflector (Margolin M.A., Rumyantsev I.E. fundamentals of infrared technology. - M: MO, 1957, s-86).

The disadvantages of the known devices are:

1. The lack of protection from precipitation rainfall and, consequently, decrease the brightness of the light source and the rapid failure.

2. The need for regulation of the gap between the electrodes when the wear and burnout of carbon electrodes.

3. High heat dissipation from the light source.

4. The complexity of the ignition of the electric arc.

Known floodlight, comprising a housing containing the light source in the form of an incandescent lamp, a reflector, protective glass (Margolin M.A., Rumyantsev I.E. fundamentals of infrared technology. - M: MO, 1957, pp.86-87).

The disadvantages of the known devices are:

1. The lack of protection from atmospheric precipitations capillary type with a sudden cooling of the light source, reflector and housing and, consequently, decrease the brightness of the light source.

2. Low optical power spotlight due to the applied ICT is cnica light.

3. High heat dissipation from the light source.

4. Short life of the light source due to overheating and combustion filament lamp.

Known floodlight, comprising a housing containing the light source in the form of a mercury arc lamp, reflector, protective glass (Technical description of the spotlight GMI227439. Hong Kong, 2008, p.2).

The disadvantages of the known devices are:

1. The lack of protection from atmospheric precipitations capillary type with a sudden cooling of the light source, reflector and housing and, consequently, decrease the brightness of the light source.

2. High heat dissipation from the light source.

3. Large consumption of electric power for the light source.

4. Rapid failure of the light source due to falling precipitation.

Closest to the claimed invention is a projector, comprising a housing containing the light source in the form of a xenon lamp, a reflector, protective glass (Technical description JOHNLITE spotlight JML2933. Hong Kong, 2009, c.1 - prototype).

The disadvantages of the known devices are:

1. The lack of protection from atmospheric precipitations capillary type with a sudden cooling of the light source, reflector and housing and, consequently, decrease the brightness of the light source.

2. Rapid failure of the light source due to the ingress of atmospheric about Atkov.

These drawbacks are due to the fact that when the light source is turned on there is a heating of the air in the enclosure and extension. Expanding housing material, safety glass and reflector. When you turn off the light source and long-term cooling results in condensation of water vapor and the condensate collects in the lower part of the housing of the spotlight. The amount of condensed water vapour made up by suction from the outside ambient air through the capillaries formed due to the difference in coefficient of linear expansion of the materials of the reflector and protective glass. During repeated switching on and off of the light source and the sucking of air is the accumulation of water in the bottom of the projector and lower the brightness of the source due to absorption of light by water. When reaching the water level to the level of the light source of the exposure light source of water is the destruction of the material of the bulb of the light source.

The challenge which seeks the solution is to improve the quality and reliability of lights for vehicles.

The technical result is achieved by the fact that the headlight for vehicles, comprising a housing containing the light source, reflector, safety glass, safety glass has suction and discharge prinnielop and the bypass channel, located on the vertical axis, while the bypass channel is located at the lowest point of the vertical axis above the discharge valve, and above the suction valve.

The drawing shows the inventive headlight for vehicles.

The inventive headlight for vehicles includes a housing 1 in which is placed a light source 2, a reflector 3, a protective glass 4. Protective glass has a spring-loaded valve 5, the pressure spring valve 6 and the bypass channel 7.

Working headlight as follows. Voltage is applied to the light source 2, which upon heating raises the temperature of the air located between the reflector 3 and the protective glass 4. Due to the expansion of heated air part of it is pushed out through the discharge valve 6 and the bypass channel 7. When you turn off the light source 2, the air between the reflector 3 and the protective glass 4 starts to cool down and there is condensation of water vapor from the air. The condensate collects in the lower part of the housing 1 of the lights in the bypass channel 7. To eliminate the vacuum opens the suction flow valve spring 5. The pressure on the outside lights and inside lights aligned, and the condensate flows by gravity from the lights outside. If it were not for the suction valve, the atmospheric pressure would not allow to drain condensate through the bypass channel due to the availability of the vacuum inside the headlights. At high humidity of outside air and a significant number of the resulting condensate part of it flows through the discharge valve 6.

An example of a specific implementation.

The inventive headlight for vehicles was installed on the car HYUNDAI TRAJET in place of the right lower fog lights factory. The diameter of the lights was 120 mm, length 110 mm, Material safety glass and reflector - polymethylmethacrylate. Housing material - steel 20. The reflective surface of the reflector is polished aluminum vacuum deposition. The inventive headlight had a diameter of bypass channel of 1.2 mm Equivalent diameters of the suction and discharge valves 4 mm Material spring strip valve body valve - foil, of a spring-beryllium copper with a thickness of 0.05 mm, the light Source is a xenon lamp with a voltage of 12 C. the Tests were carried out both in winter and summer seasons. The duration of the trials was 2 months. The results are given in the table.

Table
Test conditionsThe measured parameter and dimensionThe type of floodlight
Prototype (chief of dsca design) The inventive headlight
1234
SummerSquare drops on the reflector and protective glass (in % of total area)600
The level of condensate in the height of the headlights, mm200
Decrease the brightness of the light source, %180
WinterSquare drops on the reflector and protective glass (in % of total area)6 (drops in the form of ice)0
The level of condensate in the height of the headlights, mm35 (a condensate in the form of ice)0
Decrease the brightness of the light source, %260
Year-round testingThe average service life of the light source, years2 (factory warranty) 6 (of the m tests)

Thus, this solution increases the quality and reliability of lights for vehicles.

Headlight for vehicles, comprising a housing containing the light source, reflector, protective glass, characterized in that the protective glass has a suction and discharge valve spring and the bypass channel located on the vertical axis, while the bypass channel is located at the lowest point of the vertical axis above the discharge valve, and above the suction valve.



 

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