Solar protection device capable of stretching and retracting automatically by means of positive pressure and negative pressure of air

Abstract

The invention discloses a solar protection device capable of stretching and retracting automatically by means of positive pressure and negative pressure of air. The devicecomprises a sun shade, an air source located at the center of the sun shade, and a base plate supporting the air source, wherein the sun shade comprises sun cloth and multiple pipelines which are connected with the sun cloth into a whole and allow airflow to pass through, and the air source comprises a power supply, an electric valve unit, a one-way valve, an electric pump, a closed air tank and multiple air ducts. The device has the advantages that positive and high-pressure air flows into the pipelines connected with the close air tank, all the pipelines drive the sun cloth to be supported, and then stretching is realized. When a user needs to store the device, the air in the sun shade and the closed air tank is in a negative-pressure state, namely a vacuum state, and the sun cloth retracts towards the air source at the center along with the pipelines with air exhausted till the sun cloth is totally stored in the base plate. An air inflation structure of the whole solar protection device is simple in structure, low in cost, convenient to use and reliable.

Description

technical field [0001] The invention relates to a sunshade device, in particular to an automatic retractable sunshade device. Background technique [0002] In the scorching summer, vehicles parked outdoors will turn into ovens in a short period of time, and people will feel extremely hot and uncomfortable after entering. Moreover, the decoration materials inside the car and the paint on the outside of the car will also age rapidly in a high-temperature environment, and some polymer materials will decompose to produce toxic substances and emit an unpleasant smell. [0003] Existing car sunshade devices are all common sunshade cloths, but ordinary sunshade cloths are all directly covered on the surface of the car, and the gap between them and the car is very small, so the heat is not easy to dissipate, and the interior of the car is still easy to heat up. [0004] The Chinese invention patent whose publication number is CN202518073U discloses a kind of self-inflating car suns...

AI Technical Summary

Problems solved by technology

[0007] 2. The air bone plate cannot be retracted automatically. If you need to put the whole sunshade away, you need to curl the air bone plate by hand

Very inconvenient to use

[0008] 3. Its energy supply uses solar panels, but solar panels are expensive and easy to damage

In the hot summer, it will lead to a situation that the interior of the carriage is already very hot, and the sunshade device has just been opened, and the practical effect is poor.

At the same time, if the car is under the shadow of a tree or in the shade when parking, if the sun is obliquely shining, the sun will shine on the front window of the car, but the solar panels on the roof cannot work effectively.

[0009] 4. The suction cup contains permanent magnets. When removing the entire sunshade device, you need to remove the permanent magnets from the roof with your bare hands, which requires a lot of strength and is easy to damage the paint on the roof.

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