Mechanism for switching light emitting diode (LED) light sources by using electromagnetic valve

Abstract

The invention provides a mechanism for switching light emitting diode (LED) light sources by using an electromagnetic valve. The two light sources are arranged on a printed circuit board assembly (PCBA), and when the electromagnetic valve is not electrified, the second light source works, and the second light source is located directly below the center of the end face of the head of a light guideat the moment. When the electromagnetic valve is electrified, the head of the electromagnetic valve can pull the PCBA to move to the right for a certain distance, and can enable the first light sourceto move to the position directly below the center of the end face of the head of the light guide, and at the moment, the second light source does not work, and the first light source starts to work.The mechanism for switching the LED light sources by using the electromagnetic valve realizes switching of the first light source and the second light source under the action of the electromagnetic valve, enables the light sources to always locate directly below the center of the end face of the head of the light guide in working, and effectively improves LED lighting effects.

Description

technical field [0001] The invention relates to the field of automobile lighting, in particular to a mechanism for switching LED light sources using a solenoid valve. Background technique [0002] With the rapid development of the automobile industry, the competition in the automobile industry is becoming more and more fierce. Various automobile groups are constantly introducing new ones, and they are constantly putting forward new requirements and new ideas for auto parts, especially for the appearance of automobile headlights. And the energy-saving performance is even more refined, which also makes the application of LEDs in automotive lamps more and more extensive. For example, LEDs are used as light sources combined with light guides to realize the functions of daytime running lights and turn signals. [0003] Using LED as light source combined with light guide to realize the two functions of daytime running light and turn signal is a very common design in the market now...

AI Technical Summary

Problems solved by technology

The LED light sources of the daytime running light and the turn signal are gathered under the head of the light guide, but since the LED light emission color of the daytime running light is white or amber, and the light color of the turn signal LED is yellow, the two functions cannot share the LED, but use different leds

In order to balance the LED light effect of the daytime running lights and turn signals in the existing design, the optical centers of the two LEDs are not directly facing the center of the light guide head, and the light emitted by the LEDs cannot be utilized to the maximum efficiency.

In order to meet the requirements of the regulations on the brightness of daytime running lights and turn signals, the existing design has to increase the power or number of LEDs

This requires the lamp to have better heat dissipation capability and also increases the cost

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