A solar shading device that uses positive and negative air pressure to automatically expand and contract

Abstract

A sunshade apparatus automatically stretching and shrinking by using positive and negative air pressure comprises a sunshade cover (100), an air source (200) located in a middle position of the sunshade cover (100) and a chassis (300) supporting the air source (200). The sunshade cover (100) comprises sunshade cloth (101) and multiple soft tubes (102) integrally connected to the sunshade cloth (101) and allowing airflows to pass. The air source (200) comprises a power supply (201), an electrically controlled valve unit, a one-way valve (203), an electrically powered pump (204), a sealed air tank (205) and multiple air guide pipes. The electrically powered pump (204) inflates the tubes (102), thereby driving the sunshade cloth (101) to open, and implementing a stretching operation. The electrically powered pump (204) deflates the tubes (102), making the tubes to shrink towards the air source (200) in the middle position until all tubes are folded in the chassis (300). The entire sunshade apparatus is simple and refined in an inflation structure, low in costs, and convenient and reliable to use.

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 with the publication number CN202518073 U discloses a self-inflating car sunshade, a...

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.

Images