1. Why do we need to conduct Car Headlights Environmental Testing?

Car headlights are vital components for safe driving, but their performance can be affected by various environmental factors. To guarantee their reliability and longevity, car headlights undergo rigorous environmental testing. Let’s delve into the key tests involved in ensuring the quality of car headlights.

2. What does Car Headlights Environmental Testing include?

1) Thermal Cycle Testing:

Car headlights undergo thermal cycle testing to evaluate their resistance to alternating high and low temperature environments. This test assesses the headlight’s durability under extreme temperature conditions, ensuring its functionality in various climates.

2) Thermal Shock and High Temperature Testing:

Thermal shock testing evaluates the headlight’s ability to withstand rapid temperature changes, while high temperature testing assesses its resistance to prolonged exposure to high temperatures. These tests help identify any vulnerabilities in the headlight’s components and ensure its performance under challenging conditions.

3) Dust and Water Resistance Testing:

Dust and water resistance testing is crucial to assess the headlight’s ability to prevent dust and water from entering and damaging its internal components. These tests simulate real-world conditions and ensure that the headlight remains operational even in dusty or rainy environments.

4) Salt Spray Testing:

Salt spray testing evaluates the resistance of the headlight’s metal components to corrosion caused by salt spray. This test helps identify any weaknesses in the headlight’s materials and ensures its longevity, especially in coastal or salty environments.

5) Light Source Irradiation Testing:

Light source irradiation testing, particularly xenon lamp testing, evaluates the headlight’s resistance to light aging. This test assesses the headlight’s color stability and overall performance when exposed to intense light, ensuring its reliability over time.

3. What are the main components of the Car Headlights Environmental Testing chamber?

The external part of the vehicle lamp fogging test chamber includes a vacuum glass observation window, an insulated door, a door handle, a controller, etc. The internal test area of the test chamber is divided into two zones, simulating the surface of the vehicle lamp (outdoor environment) and the back of the vehicle lamp (engine environment). The left zone is for the lens installation surface (external vehicle part), and tests including cold water rain, constant temperature and humidity, wind speed, and lighting are conducted in this area. The right zone is for installing the lamp back (engine room side), and tests including high and low-temperature cycles and constant temperature and humidity are conducted in this area.

Car Headlights Environmental Testing

During the test, the vehicle lamp is fixed in the middle of the left and right zones, separated by a high and low-temperature resistant insulation sealing cloth. The black sealing cloth in the middle is shrink-wrapped with elastic bands and can adapt to lamps of different shapes.

  1. Temperature and Humidity Range:

– Temperature range: Left zone temperature range -40°C~+150°C / Right zone temperature range -40°C~+150°C;

– Humidity range: 10%~98% R.H (left and right zones);

– Heating rate: average temperature rise <3°C/min throughout the process (left and right zones);

– Cooling rate: average temperature drop <1°C/min throughout the process (left and right zones).

Spray system: hose spray (simulate car washing and rain), including a 120-liter sus#304 stainless steel constant temperature water tank, nozzle, 6 sets of sus#304 stainless steel universal nozzle pipes, and the flow rate can reach 10L/min.

Car Headlights Environmental Testing

 2. Lighting system:

– Spectrum range: 280nm~3000nm;

– Lamp power: 2000W or 4000W metal halide lamp;

– Full-spectrum sunlight simulation radiation 1120W/m2 (the blackboard temperature of the chamber body can be adjusted between 25°C~+95°C when irradiated);

– Number of lighting tubes: 2 sets (to meet two vehicle lamps);

– Lamp irradiation area: 1500mm * 600mm.

Wind speed system: Left zone: wind speed direction: horizontal direction. Wind speed range: 1-15m/s adjustable. Right zone: Wind blowing method: suction and blowing. Wind speed range: 2-5m/s adjustable.

When purchasing a vehicle lamp fogging test chamber, consider from multiple perspectives such as temperature and humidity range, equipment size, heating and cooling rate, spray, wind speed, lighting, etc. The brand of the test chamber components is also closely related to the performance and life of the test chamber.

4. Conclusion:

Environmental testing plays a crucial role in ensuring the durability and reliability of car headlights. By subjecting headlights to various environmental conditions, manufacturers can identify potential weaknesses and enhance the quality of their products, ultimately ensuring safer and more reliable driving experiences for consumers. At LinkoTest, we are committed to conducting comprehensive environmental testing to ensure the reliability and longevity of car headlights.

Car Headlights Environmental Testing

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