CN103428589A - Portable electronic device - Google Patents

Abstract

A portable electronic device, comprising a casing, the casing has a display area on the front, a sound outlet is provided on the back, a speaker is provided inside the casing corresponding to the sound outlet, the back of the casing includes a contact surface that can be in contact with a support and an opening The sound outlet surface of the sound outlet, the sound outlet surface is recessed toward the display area relative to the contact surface and forms a groove on the back of the housing, the groove communicates with the external environment on the side of the portable electronic device, and the sound emitted by the speaker passes through the sound outlet And groove transmission to the external environment. When the portable electronic device is placed on the supporting object, the sound output hole will not be blocked, thereby ensuring the sound output quality.

Description

portable electronic device

technical field

The invention relates to an electronic device, in particular to a portable electronic device.

Background technique

In portable, especially handheld electronic devices, such as mobile phones, tablet computers, handheld game consoles and MP4 players, built-in speakers are usually built in to satisfy users' audio-visual enjoyment when playing music or playing games. In order to ensure a better sound effect, the sound outlet of the speaker is preferably arranged on the front side of the electronic device, that is, the side with the display screen.

On the front of the handheld electronic device, a display screen is usually arranged, and some buttons for operation are arranged near the screen. Since the sound outlet of the speaker will occupy a certain area, if the size of the display screen is large, it is impossible to reserve a redundant position for the sound outlet on the front of the handheld electronic device. Some operators arrange the sound outlet of the speaker on the side of the handheld electronic device. However, when the user holds the electronic device, the sound outlet is easily covered, resulting in a decrease in sound quality. When it is arranged on the back of the electronic device, although the user is not easy to touch the sound hole, when the electronic device is placed flat on a support (such as a desktop), the sound hole will be blocked due to the blocking of the support. Causes the problem of sound quality degradation.

Contents of the invention

In view of this, the present invention aims to provide a hand-held electronic device that is less likely to affect sound quality.

A portable electronic device, comprising a casing, the casing has a display area on the front, a sound outlet is provided on the back, a speaker is provided inside the casing corresponding to the sound outlet, and the back of the casing includes a contact surface that can be in contact with a support and an opening. The sound outlet surface of the sound outlet, the sound outlet surface is recessed toward the display area relative to the contact surface and forms a groove on the back of the housing, the groove communicates with the lateral external environment of the portable electronic device, and the sound from the speaker passes through the sound outlet and The groove transmits to the external environment.

Compared with the prior art, the sound outlet of the speaker is located on the back of the electronic device, and is separated from the contact surface by the groove, so when the contact surface is in contact with the support, the sound outlet will not be blocked, thereby enabling The sound is smoothly transmitted to the external environment, thereby ensuring the sound quality.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a portable electronic device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the portable electronic device shown in FIG. 1 .

FIG. 3 is a back view of the portable electronic device shown in FIG. 1 .

FIG. 4 is a schematic side view of the portable electronic device shown in FIG. 1 .

FIG. 5 is an enlarged view at V in FIG. 4 .

FIG. 6 is a schematic side view of a portable electronic device according to a second embodiment of the present invention.

FIG. 7 is an enlarged view of part VII of FIG. 6 .

FIG. 8 is a back view of a portable electronic device according to a third embodiment of the present invention.

Description of main component symbols

portable electronic device 100 case 10 panel 11 Display area 111 Front plate 112 side wall 113 back cover 12 Inclined part 121 sound hole 122 cavity 123 rear plate 124 side wall 125 straight part 126 wall 127 speaker 20 support 30 open space 31 portable electronic device 100a Display area 111a back cover 12a sound hole 122a straight part 126a groove 130a Sound surface 140a Contact surfaces 142a speaker 20a support 30a portable electronic device 100b sound hole 122b straight part 126b groove 130b baffle 132b

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

1 and 2 show a portable electronic device 100 according to a first embodiment of the present invention. The portable electronic device 100 can be a mobile phone, a tablet computer, a handheld game console, an MP4 player, and the like.

The portable electronic device 100 has a flat shell 10 for accommodating various components of the portable electronic device 100 , such as circuit board, processor, battery, multimedia module, speaker and so on. The front of the casing 10 has a display area 111, and the back of the casing 10 has a straight part 126 in the middle and parallel to the front and two inclined parts 121 bent and extended from both sides of the straight part 126. The edge of the portion 121 is connected to the front of the housing 10 , and each inclined portion 121 is provided with a group of sound holes 122 . Corresponding to each set of sound outlet holes 122 inside the casing 10 is provided a speaker 20 , and the speaker 20 is accommodated in a sound cavity 123 .

The housing 10 includes a panel 11 and a rear cover 12 connected to the panel 11 . The panel 11 and the rear cover 12 form a receiving space for receiving various components of the portable electronic device 100 . The panel 11 includes a substantially rectangular front body 112 and a sidewall 113 extending from a periphery of the front body 112 toward the rear cover 12 . The display area 111 is located at a middle of the front body 112 .

Please also refer to FIG. 3 , the rear cover 12 includes a substantially rectangular rear body 124 and a side wall 125 extending from the periphery of the rear body 124 toward the panel 11 . The straight portion 126 is located in the middle of the rear plate body 124 , and the two inclined portions 121 are respectively located on opposite sides of the straight portion 126 . The inclined portion 121 is formed by obliquely bending and extending both sides of the straight portion 126 , and is tilted upward relative to the straight portion 126 (refer to the direction shown in FIG. 2 ). A preferred selection of the included angle between the inclined portion 121 and the front of the housing 10 is 30° to 60°. As shown in FIG. 4 , when the housing 10 is placed horizontally on a support 30 with the display area 111 facing upward, the inclined portion 121 is higher than the straight portion 126 of the housing 10, so that the inclined portion 121 and the straight portion 126 An outwardly expanding open space 31 is formed between the supports to facilitate the outward propagation of the sound emitted from the sound outlet 122 .

The inclined portion 121 can be a plane or an arc surface, and the sound hole 122 is centrally arranged along the length direction of the inclined portion 121 . In this embodiment, the inclined portion 121 is a plane, and the sound holes 122 are distributed in a rectangular array. In other implementation manners, the sound outlet holes 122 may also be in other distribution forms, such as a circular array or a square array.

Please also refer to FIG. 5 , the inner wall of the rear plate 124 extends vertically corresponding to each group of sound holes 122 to form an annular wall 127 , and the wall 127 encloses the rear plate 124 to form the sound cavity 123 . The sound cavity 123 is roughly in the shape of a round pie, including a circular cavity and a smaller rectangular cavity located on one side of the circular cavity. The opening area of each group of sound outlet holes 122 is located in the housing 10 area facing the sound cavity 123, and the opening ratio of each group of sound outlet holes 122 (that is, the total area of the group of sound outlet holes 122 and the ratio of the sound outlet holes 122 The ratio of opening area) is above 20%. Each speaker 20 is correspondingly placed in a sound cavity 123 , and the front of the speaker 20 faces the area where the sound outlet 122 on the casing 10 is located, that is, the sound output mode of the speaker 20 is direct sound output (positive sound output). When the loudspeaker 20 works, the sound that the loudspeaker 20 sends is exported through the sound outlet 122 and spreads obliquely outwards, wherein the sound that the loudspeaker 20 sends is the direction where the sound intensity is the largest (as shown in Figure 4 ) after the sound is sent out through the sound outlet 122 (indicated by the middle arrow) forms an acute angle with the plane where the display area 111 is located, neither parallel nor perpendicular.

In the portable electronic device 100 , the casing 10 has a symmetrical structure, and the inclined portions 121 on the back thereof are arranged symmetrically. The back of the housing 10 can also be provided with four inclined parts 121 at the positions where the housing 10 is close to the four corners, and a group of sound holes 122 can be opened on each inclined part 121, that is, the back of the housing 10 is provided with four Group the sound hole 122. Correspondingly, a speaker 20 is provided corresponding to each group of sound outlet holes 122 in the casing 10 .

In this portable electronic device 100, since the sound outlet 122 is arranged on the back side of the casing 10, the sound output mode of the speaker 20 can be set to direct sound (positive sound) relative to the sound outlet 122, and relative to the side sound. The speaker 20 has high fidelity to the middle and high frequency components (5KHz~20KHz) of the sound, so as to satisfy the user's audio-visual enjoyment when listening to music or playing games.

6-7 show a portable electronic device 100a according to a second embodiment of the present invention. The main difference between it and the first embodiment lies in the structure of the rear cover 12a and the orientation of the speaker 20a. The portable electronic device 100a defines two grooves 130a near the left and right sides of the rear cover 12a. The two grooves 130a are defined on the left and right sides of the straight portion 126a. The top surface of each groove 130a is a plane parallel to the straight portion 126a and the display area 111a, and the side surface is a plane perpendicular to the straight portion 126a and the display area 111a. The sound outlet hole 122a is opened on the top surface of the groove 130a and penetrates through the rear cover 12a so that the top surface of the groove 130a forms a sound outlet surface 140a. The sound output surface 140a is recessed toward the display area 111a relative to the straight portion 126a. The speaker 20a is fixed above the sound output hole 122a of the back cover 12a, and its sound output direction faces the sound output surface 140a. Similar to the structure of the first embodiment, the speaker 20a of this embodiment is also housed in the sound cavity formed by the abutment of the wall (not shown) and the rear plate (not shown), so as to improve the sound output. The straight portion 126a is in contact with the support 30a through its contact surface 142a, so that the portable electronic device 100a is horizontally placed on the support 30a. When the portable electronic device 100a is placed on the support 30a, the contact surface 142a of the back cover 12a abuts against the surface of the support 30a, and the sound output surface 140a is separated from the surface of the support 30a by the groove 130a. Thus, the sound hole 122a is not covered by the support 30a, and the sound emitted from the speaker 20a can be smoothly transmitted from the groove 130a to the lateral external environment of the portable electronic device 100a.

FIG. 8 shows a portable electronic device 100b according to a third embodiment of the present invention. In order to prevent the sound from diverging in the grooves 130b and affecting the sound output effect, a baffle 132b is further provided in each groove 130b in this embodiment. The baffle 132b is in an arc shape, which bends toward the straight portion 126b. Thus, a concave sound wave reflection structure is formed near each group of sound outlet holes 122b, so that the sound transmitted from the sound outlet holes 122b can be reflected by the baffle plate 132b towards the left and right sides of the portable electronic device 100b, so as to improve the output sound quality .

It can be understood that the speaker 20a in the above-mentioned second embodiment can also be obliquely fixed in the back cover 12a through a structure such as a bracket or a spacer (not shown in the figure), and at this time, the sound outlet hole 122a on the sound outlet surface 140a is also correspondingly Tilt setting. The tilting angle of the speaker 20a can be the same as that of the speaker 20 in the first embodiment (ie between 30° and 60°), and the tilting direction is also toward the outside of the electronic portable device 100a. This structure is more conducive to the outward transmission of the sound from the sound outlet 122a. Likewise, the third embodiment can also be changed in the same way.

The improvement of the external structure of the housing 10 and the setting adjustment of the sound outlet holes 122, 122a of the present invention provide a means for the industry to effectively avoid sound shielding and ensure sound pressure, and the structural design can also change the speaker 20 accordingly. , 20a to ensure the sound effect, and any partial or equivalent modifications made according to the present invention all reflect the use of the creative idea of the present invention, and should belong to the protection of the present invention.

Claims (10)

1. A portable electronic device, comprising a housing, the front of the housing has a display area, the back is provided with a sound outlet, and the inside of the housing is provided with a speaker corresponding to the sound outlet, and it is characterized in that: the back of the housing includes a supporting object The contact surface of the contact and the sound outlet surface with the sound outlet, the sound outlet surface is recessed toward the display area relative to the contact surface and forms a groove on the back of the housing, the groove is open toward the side of the portable electronic device, and the sound from the speaker passes through the outlet. The sound holes and grooves propagate outward. 2. The portable electronic device as claimed in claim 1, wherein the sound output direction of the speaker is perpendicular to the contact surface. 3. The portable electronic device as claimed in claim 1, wherein the sound output surface is parallel to the contact surface. 4. The portable electronic device as claimed in claim 1, wherein the sound output direction of the speaker is inclined outward relative to the contact surface. 5. The portable electronic device as claimed in claim 1, wherein the extending direction of the sound output hole is the same as the sound output direction of the speaker. 6. The portable electronic device as claimed in claim 1, wherein the casing forms a baffle partially surrounding the sound hole in the groove. 7. The portable electronic device as claimed in claim 6, wherein the baffle is in an arc shape bent toward the contact surface. 8 . The portable electronic device as claimed in claim 1 , further comprising a sound cavity disposed inside the casing, and the speaker is accommodated in the sound cavity. 9. The portable electronic device as claimed in claim 8, further comprising a wall formed on the casing, and the sound chamber is surrounded by the wall. 10 . The portable electronic device as claimed in claim 1 , wherein there are a plurality of sound outlet holes, which are distributed in a matrix on the sound outlet surface. 11 .

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