Daytime driving lamp optical system, LED daytime driving combination lamp and vehicle LED combination lamp

Abstract

The invention provides a daytime driving lamp optical system, an LED daytime driving combination lamp and a vehicle LED combination lamp, the daytime driving lamp optical system comprises an LED light source and a condensing lens, the condensing lens is arranged in front of the LED light source, and the focus of the LED light source coincides with the focus of the condensing lens, wherein the condensing lens comprises a rotary optical surface, a rotary side surface, a rotary total reflection surface and a light emitting surface, and the middle light emitted by the LED light source can be converted into parallel light after passing through the rotary optical surface and is emitted from the light emitting surface; and outer ring light emitted by the LED light source can be refracted by the rotary side surface, then is emitted by the rotary total reflection surface, is converted into parallel light and then is emitted from the light emitting surface.

Description

technical field [0001] The invention belongs to the field of lamps in vehicles, in particular, the invention relates to an LED combination lamp including a front turning lamp, a daytime running lamp and a front position lamp. Background technique [0002] Daytime running lights refer to lamps and lanterns that are easier to be identified when the vehicle is driving in the daytime. They are installed on the front of the vehicle body. The main function of the attention of motor vehicles and pedestrians is to let others know that a car is coming, which belongs to the category of signal lights. [0003] There are many types of optical systems for LED daytime running lights. At present, the mainstream market is mainly based on light guide design, which can be designed into a three-dimensional curved surface according to the shape, beautiful in shape and flexible in structure. Such as figure 1 As shown, it is an optical schematic diagram of a light guide structure, wherein 101 i...

AI Technical Summary

Problems solved by technology

The design disadvantages of this light guide structure are: the path of light in the thick-walled material is long, the light is totally reflected by multiple surfaces, the light loss is very high, the light utilization rate is low, and higher power is required. Thick-walled optical parts injection molding process Complicated, high mold cost, while LEDs emit light from the side of 103 optics, the side area is small, LEDs are dense, which is not conducive to heat dissipation

The design feature of this structure is that the light path is short and the light utilization rate is high. At the same time, the LEDs are arranged separately in a circle, which is good for heat dissipation. However, some customers do not like this structure with a grainy appearance. They like the smooth surface of the surface 3032. , while the appearance has a metallic striped texture

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