Light guide ring and button assembly comprising same

Abstract

The invention belongs to the technical field of vehicle-mounted electronic equipment, and particularly discloses a light guide ring. The light guide ring is cylindrical, and a plurality of yielding grooves for accommodating light sources are formed in one end of the light guide ring, and are evenly distributed in the circumferential direction of the light guide ring at intervals; an arc opening isformed between every two yielding grooves in the side wall of the light guide ring and is in the same direction as openings of the yielding grooves. The light guide ring has a simple structure, uniform and sufficient light-emitting effect can be achieved with fewer light sources, the structure of the light guide ring is simplified, and light guide uniformity of the light guide ring is improved. The invention also provides a button assembly comprising the light guide ring. With adoption of the light guide ring, the whole button assembly is compact in structure, and the light effect presented by buttons is better.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted electronic products, in particular to a light guide ring and a button assembly including the light guide ring. Background technique [0002] The knob or button structure is an important operating part on various control panels. In existing electronic products, such as mobile phones, set-top box terminal equipment or vehicle-mounted electronic products, the button parts are all equipped with lighting effects to remind users of the button position at night. It usually has a button backlight and a button light guide ring structure. The button backlight, such as LED, installed on the printed circuit board (PCB), emits various colors of light through the light guide function of the light guide ring, presenting the preset lighting effect, which can not only enrich the lighting effect of the vehicle, It can also guide the user to operate the knob correctly. [0003] A knob light guide ring stru...

AI Technical Summary

Problems solved by technology

However, due to the use of the upper light guide and the lower light guide, and each light guide is provided with multiple reflective surfaces, the structure of the entire light guide is more complicated; and the cooperation of the upper light guide and the lower light guide is required In use, if there is a deviation in coordination, it is easy for the light to deviate from the preset track, resulting in poor lighting effects of the button; and because the upper and lower light guides are used, the entire structure is too large, which is not conducive to the miniaturization and simplicity of the button.

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