Patent Application
20140079263
1. Field of the Disclosure
The disclosure generally relates to an electronic device. More particularly, the disclosure relates to a portable electronic device.
2. Description of Related Art
In the modern information era, people are becoming more and more dependent on portable electronic device such as mobile phones, laptop, tablet PC and handheld game consoles that are commonly seen in people's daily lives. Take mobile phones for example, various manufacturers devote research effort to minimizing weight and dimensions of mobile phones so as to provide users with portability.
However, reducing the dimensions of an existing mobile phone involves a close matching of all the elements within the mobile phone including the location and size of a sound box for housing an acoustic chamber. In fact, quality of sound emitted from the phone largely depends on the size of the sound box. In general, a larger sound box can obtain a better sound quality. Nevertheless, when the mobile phone is reduced in size, the sound box within the phone must be reduced correspondingly. As a result, the low frequency response of the speaker will deteriorate. Hence, how to utilize limited space to maximize sound quality is an important topic for manufacturers of portable electronic devices nowadays.
Accordingly, the disclosure is directed to a portable electronic device which improves the sound quality without increasing the size of the portable electronic device.
The disclosure provides a portable electronic device including a circuit board, a speaker, an electronic component and an inner casing. The speaker is disposed on the circuit board. The electronic component is disposed on the circuit board and right next to the speaker. The circuit board is disposed in the inner casing, and the inner casing includes a main cavity, an extended cavity and a channel. The main cavity is connected to the circuit board to define an acoustic chamber for containing the speaker. The main cavity has a first opening, wherein the speaker is connected to the first opening and a part of the speaker is exposed by the first opening. The extended cavity is connected to the main cavity and located above the electronic component. The extended cavity has a second opening facing opposite to the circuit board and a chamber cover sealing the second opening The chamber cover and the extended cavity define an extended camber. The channel connects the main cavity and the extended cavity, and the extended cavity communicates with the main cavity through the channel.
Based on the above, the disclosure utilizes the spare space above the electronic component next to the speaker to form an extended cavity as the extended chamber for the speaker, wherein the extended cavity communicates with the main cavity containing the speaker through a channel. Thus, the total volume of the chambers for the speaker can be increased so as to improve the sound quality of the speaker of the portable electronic device. Also, with the disposition of the sound proof components, the sound generated by the speaker can be transmitted between the acoustic chamber and the extended chamber without sound leakage, thus sound quality is further promoted. Therefore, the disclosure maximizes the sound quality of the portable electronic device without increasing the size thereof.
In order to make the aforementioned features and advantages of the disclosure more comprehensible, embodiments accompanying figures are described in detail below.
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification.
The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Reference will now be made in detail to the present preferred embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
The main cavity 142 is connected to the circuit board 110 to define an acoustic chamber 150, as shown in
With the layout proposed above, the present embodiment of the disclosure utilizes the spare space above the electronic component 130 next to the speaker 120 as an extended cavity 144, such that the total volume of the chamber for the speaker 120 can be increased by connecting the main cavity 142 to the extended cavity 144 through the channel 146, so as to improve the sound quality of the speaker 120 without taking up any extra space of the portable electronic device 100 which means the size of the chamber for the speaker 120 can be expanded without increasing the size of the portable electronic device 100.
In the present embodiment, the portable electronic device 100 further includes a plurality of sound proof components 182, 184 and 186. The material of the sound proof components 182, 184 and 186 includes sponge, but the disclosure is not limited thereto. The sound proof component 182 is disposed between the inner casing 140 and the outer casing 170. To be more specific, the sound proof component 182 surrounds the edge of the first opening 142a and the edge of the second opening 144a and leaning between the inner casing 140 and the outer casing 170 as shown in
The sound proof component 184 leans between the main cavity 142 and the circuit board 110 as shown in
According to the above descriptions, the disclosure utilizes the spare space above the electronic component next to the speaker to form an extended cavity as the extended chamber for the speaker, wherein the extended cavity communicates with the main cavity containing the speaker through a channel. Thus, the total volume of the chamber for the speaker can be increased so as to improve the sound quality of the speaker of the portable electronic device. Also, with the disposition of the sound proof components, the sound generated by the speaker can be transmitted between the acoustic chamber and the extended chamber without sound leakage thus sound quality is further promoted. Therefore, the disclosure can maximize the sound quality without increasing the size of the portable electronic device.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.
