Helmet demister

Abstract

A helmet demister includes a socket, a power supply device and a fan. Two ends of the socket are defined respectively with a clamping hole to fix an adsorption element through which the socket is freely adsorbed on an inner surface of a helmet lens. When defogging, a controller activates the power supply device to produce electricity and drive the fan. Then, the fan produces wind power to cause air convection. As this air convection rate is larger than a flow rate of hot air produced when a rider is breathing, a temperature in an inner space of the helmet lens is maintained at being close to a temperature of ambient environment; therefore, water molecules are not attached on a side of the lens where the temperature is lower. Moreover, as en entire structure is simple, the socket can be adsorbed on the helmet lens freely, to improve the practicability.

Description

BACKGROUND OF THE INVENTION[0001](a) Field of the Invention[0002]The present invention relates to a demister and more particularly to a helmet demister which utilizes a method of balancing a temperature difference to prevent from attachment of water molecules.[0003](b) Description of the Prior Art[0004]A motorcycle has already been one of most essential vehicles for short-ranged transportation of modern people. In order to protect safety of a rider, a helmet has become one of indispensable safety equipment. Therefore, whether in a sunny or rainy day, the rider has to wear the helmet to protect his or her safety; and all of the existing helmets will be attached with a piece of safety lens to keep alien objects from hitting on the rider's face upon riding the motorcycle. However, as the lens is covered, a temperature inside the helmet will increase by hot air which is caused when the rider is breathing. At this time, when air humidity in ambient environment is too high and an ambient ...

AI Technical Summary

Benefits of technology

[0006]The primary object of the present invention is to provide a helmet demister which includes primarily a socket, a power supply device and a fan, wherein two ends of the socket are defined respectively with a clamping hole to fix an adsorption element through which the socket can be freely adsorbed on an inner surface of a helmet lens. When defogging, a controller can be used to activate the power supply device to produce electricity and drive the fan. At this time, the fan will produce wind power to from air convection. As an air convection rate is larger than a flow rate of hot air which is produced when a rider is breathing, a temperature in an inner space of the helmet lens can be maintained at being close to an ambient temperature; therefore, water molecules will not be attached on a side of the lens where the temperature is lower. On the other hand, as an entire structure is simple, it facilitates the rider to adsorb the socket at will, thereby improving the practicability.

[0007]A second object of the present invention is to provide a helmet demister which requires less electricity that there is no need to replace the battery constantly.

[0008]A third object of the present invention is to provide a helmet demister, an entire structure of which is simple and compact that the rider can easily carry.

[0009]A fourth object of the present invention is to provide a helmet demister, wherein as an entire structure is simple, a manufacturing cost is cheap to reduce a sale price.

[0010]A fifth object of the present invention is to provide a helmet demister, wherein as an air flow rate is more than three times of a respiration rate, a helmet lens can be quickly defogged and can be kept from fogging.

Problems solved by technology

However, as the lens is covered, a temperature inside the helmet will increase by hot air which is caused when the rider is breathing.

When the mist is produced on the helmet lens, a vision of the rider will be reduced, which will easily result in an accident.

This method can completely prevent the lens 10 from forming the mist; however, as this anti-fogging film 12 coating method will fail after a certain period of time, the anti-fogging film 12 has to be coated once after a certain period of time, in order to maintain the anti-fogging effect of the lens 10 of the helmet 1, which will be very inconvenient to the rider.

Nevertheless, as this method of utilizing the heating wires 22 will consume more electricity when activating, if a battery is used to supply electricity, power in the battery will be depleted very quickly and thus the battery has to be replaced constantly.

Therefore, the method of using the heating wires will very easily cause insufficient electricity.

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