Lighting refers to the measures of using various light sources to illuminate workplaces and living areas or individual objects. "Natural lighting" refers to the use of sunlight and sky light; "Artificial lighting" refers to the use of artificial light sources. The primary purpose of lighting is to create good visibility and a comfortable and pleasant environment. 

Interior design lighting refers to the professional design of various lighting parameters such as illuminance, color temperature, and color rendering index in various architectural environments. It not only needs to meet the requirements of indoor "brightness", but also plays a role in enhancing the environment and atmosphere. Generally, this is proposed by interior architects, and calculated and adjusted by electrical engineers. It also refers to the act of illuminating with lights or the state of being illuminated by lights. 

With the rapid iteration of new energy vehicles towards intelligence, lightweighting and energy efficiency, LED lighting, due to its unique advantages such as low power consumption, long lifespan, high integration, and fast response speed, has completely replaced traditional halogen and xenon light sources and has become the core standard for the on-board lighting system of new energy vehicles. It is widely used in both interior and exterior lighting of the vehicles as well as in intelligent lighting interaction scenarios, and is a key supporting technology for the lightweight upgrade and energy consumption optimization of new energy vehicles. 

In the exterior lighting scenarios, LED lighting covers core components such as headlights, daytime running lights, turn signals, taillights, and ambient warning lights. Compared to traditional light sources, LED light sources have no delay in startup, uniform brightness, and strong penetrating power, which can effectively enhance driving safety in complex road conditions such as rain and snow. At the same time, it has a small size and extremely strong shape flexibility, which can be adapted to the simple and technological appearance design concept of new energy vehicles. Automakers can create exclusive model recognition through customized lighting shapes, becoming an important highlight in the exterior design of new energy vehicles. 

In terms of interior lighting, LED interior ambient lights, reading lights, backlight indicator lights, greeting lights, etc. have been fully adopted. The intelligent LED ambient lights can achieve multi-color switching, color change according to speed, and联动with vehicle system scenes for adjustment, meeting the experience requirements of the intelligent cabin of new energy vehicles, and creating a technological and comfortable driving environment. At the same time, the feature of no flicker and low heat generation of the light source effectively improves the comfort of driving and riding， and is suitable for the usage scenarios of the enclosed interior space. 

For new energy vehicles, energy conservation and consumption reduction are the core advantages. The energy consumption of LED lighting is only one-third that of traditional lamps, which can effectively reduce the vehicle's power load, decrease battery energy loss, and indirectly increase the vehicle's range. In addition, LED lamps have strong shock resistance, and their service life is highly compatible with the vehicle's service period, significantly reducing the cost of later maintenance and replacement, which is in line with the development trend of low-carbon, efficient and intelligent new energy vehicles. Currently, it has become the mainstream lighting solution for mass-produced new energy vehicle models.