Valve body of car lamp rear cover and car lamp rear cover

Abstract

The invention relates to the technical field of car lamps, and discloses a valve body of a car lamp rear cover, which comprises a silica gel block, a cross valve is arranged on the silica gel block, a matching piece is adhered to the inner wall of the silica gel block, an inner stopper is arranged on the other side of the matching piece, and the inner stopper comprises a main plate, a spiral bulge, a bulge roller and a square column, the center of the main plate is in a barrel shape, a circular plate is fixed to the outer side of the barrel shape, a through hole is formed in the center of the main plate, and protruding sails arranged in a circumferential array shape are arranged at the upper end of the circular plate of the main plate. The cross valve is arranged on the silica gel block, and when air pressure difference exists between the air pressure in the silica gel block and the external air pressure, the cross valve is opened through the air pressure difference, so that the external air communicates with the air in the silica gel block, the air pressure in the silica gel block is adjusted, and when air pressure difference exists between the air pressure in the silica gel block and the external air pressure, the air pressure in the silica gel block can be automatically adjusted.

Description

technical field [0001] The invention relates to the technical field of vehicle lamps, in particular to a valve body of a vehicle lamp rear cover and a vehicle lamp rear cover. Background technique [0002] In daily life, car lights are an indispensable equipment for vehicles. Without them, driving will be dangerous. Car lights refer to the lamps on the vehicle. Reminder tools are generally divided into headlights, taillights, turn signals, etc., usually of various types, etc. When installing, a rear cover needs to be installed behind the lamp holder to stabilize the anti-dust effect, but because the lighting When in use, there is heat dissipation, which will lead to an increase in the air pressure inside the car lamp, and changes in the air pressure inside the car will affect the lighting effect of the lamp and affect the lighting effect. Contents of the invention [0003] The object of the present invention is to provide a flap valve body and a car light back cover, so t...

AI Technical Summary

Problems solved by technology

[0002] In daily life, car lights are an indispensable equipment for vehicles. Without them, driving will be dangerous. Car lights refer to the lamps on the vehicle. Reminder tools are generally divided into headlights, taillights, turn signals, etc., usually of various types, etc. When installing, a rear cover needs to be installed behind the lamp holder to stabilize the anti-dust effect, but because the lighting When in use, there is heat dissipation, which will lead to an increase in the air pressure inside the car lights, and changes in the air pressure in the car will affect the lighting effect of the lights and affect the lighting results

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