In the vast automotive world, the lighting system is undoubtedly an important part of the safe driving, among the many light models, the H4 model has become the first choice of many owners and car manufacturers with its unique design and wide application.

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Basic introduction

As a widely used light, H4 light is characterized by the design of double filament-three needle. This design enables the H4 bulb to achieve both high beam and low beam functions, greatly improving the convenience and safety of driving. The H4 bulb is usually composed of two filaments, which are responsible for the lighting task of high and low light respectively. This integrated design not only simplifies the complexity of the vehicle lighting system, but also makes the replacement of light bulbs easier and faster.

Technical characteristics

1.Dual filament design
The H4 lamp realizes the integration of high and low beam through the dual filament design, which makes the driver can switch high and low light without changing the light bulb, greatly improving the convenience of driving.

2.Three-pin interface
The H4 bulb uses a three-pin interface design, so that the bulb can be closely connected with the vehicle lighting system, ensuring stable current transmission and reliable light work.

3.Brightness and exposure range
Although the brightness of the H4 bulb is slightly insufficient compared to some new design bulbs, it has a moderate exposure range and can meet the needs of daily driving. At the same time, the light emitted by the H4 bulb is relatively scattered, and the penetration ability is relatively weak, but in bad weather conditions such as rain and fog, such a design helps to improve the visual range of the light.

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Application scenario

H4 bulbs are used by many models because of their unique design and wide range of applications. From early models to new models in recent decades, H4 bulbs have occupied an important position. Especially in some models that need to be equipped with both high and low light, the H4 bulb is essential.

In addition, H4 bulbs are also widely used in some special purpose vehicles, such as off-road vehicles, trucks, and so on. These vehicles have high requirements for the lighting system, which needs to meet the needs of both high and low light. With its excellent performance and wide range of applications, the H4 bulb has become the first choice for these vehicles.

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Our company has also independently developed and produced a lot of H4 models in different series of car headlights, if interested, please consult the staff for details.