Power supply device with humidifying function

Abstract

A power supply device with a humidifying function includes a body, a circuit board, and a heater. An accommodation space is defined inside the body, and a water reservoir is disposed inside the accommodation space for storing water. A steam vent is formed on a surface of the body for communicating the water reservoir. The circuit board is disposed on a bottom of the accommodation space and includes an input connector and an output connector disposed thereon. The circuit board receives an external power from the input connector, transforms the external power into a first output power and outputs the first output power via the output connector, or transforms the external power into a second out power. The heater is electrically connected to the circuit board and contacts the water reservoir, for receiving the second output power for the purpose of heating water and vaporizing the water into steam.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 200920277151.6 filed in China, P.R.C. on 2009 / 12 / 8, the entire contents of which are hereby incorporated by reference.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to an external power supply device for a portable electronic device, and more particularly to a power supply device with a humidifying function.[0004]2. Related Art[0005]A portable electronic device, such as a laptop computer, selectively obtains electric power from an internal power source or an external power source. The internal power source is typically a battery, such as a rechargeable battery, providing direct current (DC) power to the portable electronic device directly. The external power source is a power supply device with rectification and voltage transforming functions. The power supply device receives an alternating current (AC) power from an ...

AI Technical Summary

Benefits of technology

[0011]The external power is selectively transformed into the first output power or the second output power through the circuit board. The power supply device can be used to output the first output power to a portable electronic device directly, or output the second output power to drive the heater to heat the water in the water reservoir for vaporizing water to steam. Therefore, the power supply device according to the present invention not only provides an electric power to the portable electronic device, but also has humidifying function to replace electric humidifying appliances, such that the power supply device become an device having multi-functions.

Problems solved by technology

The electrical capacity of the rechargeable battery is limited.

Furthermore, a conventional power supply device has a certain weight and volume occupying certain luggage space.

As a result, certain daily necessities cannot be accommodated in a suitcase or luggage, resulting in inconvenience when traveling.

Moreover, during a trip some people may feel uncomfortable due to variations in ambient temperature and humidity.

A power supply device in the prior art occupies certain luggage space, such that the user must sacrifice carrying other daily necessities.

Furthermore, a power supply device in the prior art does not equipped with functions other than power supplying; therefore it's a necessity but a heavy object in the luggage.

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