A retractable ventilation roof

Abstract

The invention discloses a stretchable type ventilating top cover which comprises a top cover (1) of a motor caravan, wherein an air inlet (2) is formed in the top of the top cover (1); the stretchable type ventilating top cover further comprises a cylinder (3), a filtering net (4) and a fixing block (5); the fixing block (5) and the cylinder (3) are arranged on the two sides of the air inlet (2); a groove (6) parallel to the top cover (1) is formed inn a side wall of the fixing block (5); the groove (6) and the cylinder (3) are oppositely arranged; a spring (7) is arranged at the bottom of the groove (6); the filtering net (4) is parallel to the top cover (1); one end of the filtering net (4) is arranged on the spring (7) while the other end is arranged on the cylinder (3); the length of the filtering net (4) is greater than the length of the air inlet. The stretchable type ventilating top cover has the beneficial effects that the characteristics of simple structure, capability of effectively preventing sundries, such as, outside tree leaves and branches, from entering into the main body of the motor caravan, and excellent ventilation are achieved.

Description

technical field [0001] The invention relates to the technical field of a ventilation roof installed on a caravan, in particular to a telescopic ventilation roof. Background technique [0002] With the improvement of people's living standards, people's daily leisure activities are no longer ordinary gatherings and shopping, but more tend to travel. According to the statistics of the national authority, the number of people traveling nationwide during the "October 1st" Golden Week in 2013 reached 698 million person-times, compared with more than 400 million people-times during the seven-day Spring Festival holiday in the same year, an increase of nearly 50%, and the national highway and waterway passenger volume reached 87.6 million person-times per day. Accompanied by the boom in travel, there are crowds of public transportation such as trains, planes, and ships, and it is even difficult to find a ticket. In addition, more and more cities are plagued by smog, and more people ...

AI Technical Summary

Problems solved by technology

[0003] The air circulation in the caravan is realized through a plate-shaped ventilation top cover with flange mounting holes. The top of the caravan body is provided with a square slot, and the top of the square slot is fixed with a ventilation top cover by screws. When the inside of the car is stuffy, passengers only need to remove the ventilation top cover, so that the air outside the car body can enter the car body through the square groove, realizing the air circulation in the car body. Enter the car body through the square slot, thereby destroying the riding environment of the passengers in the car, and the passengers have to fix the ventilation top cover on the top of the square slot again, which undoubtedly makes the air quality in the car poor and stuffy, endangering the health of passengers, so , this vented top cover is not promoted for use in

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