KR20080006962A - Speaker unit and electrical apparatus having the same - Google Patents

Abstract

A speaker unit and an electrical apparatus having the same are provided to increase the output of the speaker by accelerating heat dissipation. According to a speaker unit for an electrical apparatus, a speaker has a yoke(131). A thermal conductive member(150) contacts with the yoke by being connected to the yoke. A cabinet(140) is combined to the body of the electrical apparatus. The thermal conductive member is combined to the cabinet in order to contact with the yoke.

Description

Speaker unit and an electronic device having the same {SPEAKER UNIT AND ELECTRICAL APPARATUS HAVING THE SAME}

1 is a perspective view of a portable computer according to the present invention,

2 is a cross-sectional view showing a first embodiment of the speaker unit of FIG.

3 is a cross-sectional view showing a second embodiment of the speaker unit of FIG. 1;

4 is a cross-sectional view showing a third embodiment of the speaker unit of FIG. 1;

5 is a cross-sectional view illustrating a fourth embodiment of the speaker unit of FIG. 1.

Explanation of symbols on the main parts of the drawings

100: portable computer 103: monitor

110: main body 120: speaker unit

130: speaker 131: yoke

140: cabinet 150: heat conductive member

160: heat dissipation member

The present invention relates to a speaker unit and an electronic device having the same, and more particularly, to a speaker unit having an improved heat dissipation structure and sound quality, and an electronic device having the same.

Electronic devices include televisions, computers, and the like. Among them, a portable computer generally includes a monitor unit equipped with a thin display such as an LCD panel, and a main body unit supporting the monitor unit and equipped with various hardware and a keyboard.

Such a portable computer has a speaker unit for providing high quality sound to a user. The speaker unit converts electrical energy into sound to provide music, information, and the like to the user. Speaker units tend to be smaller and require higher power.

The speaker unit includes a frame, a vibration unit including a diaphragm, a voice coil, and the like, a magnet, a pole piece, and the like.

In this configuration, when a current is applied to the voice coil, the voice coil is vibrated up and down by electromagnetic force generated from the voice coil, and the sound plate is generated while the diaphragm vibrates by the vibration of the voice coil. At this time, heat is generated from the voice coil. When the speaker is used for a long time or the output of the speaker is increased, high temperature heat is generated from the voice coil.

However, in the conventional speaker, since heat generated inside the speaker is discharged through the yoke, heat transfer efficiency may be reduced, thereby limiting the output of the speaker or degrading the speaker's performance. In addition, the speaker is surrounded by a box shape such as an enclosure and forms an opening such as an air vent in the enclosure to dissipate heat. However, such openings may cause distortion of sound quality generated in the speaker.

Accordingly, an object of the present invention is to provide a speaker unit and an electronic device having the same, which can rapidly radiate heat to increase the output of a speaker, improve sound quality, and are easy to assemble.

According to the present invention, there is provided a speaker unit for an electronic device, comprising: a speaker having a yoke; It is achieved by a speaker unit comprising a heat conducting member coupled to the yoke so as to contact the yoke.

The apparatus may further include a cabinet coupled to the main body of the electronic device and having an opening at one side, wherein the heat conductive member blocks the opening and is coupled to the cabinet to be in contact with the yoke.

In addition, the thermally conductive member preferably includes a plate-shaped thermal pad.

The heat dissipation member may further include a heat dissipation member coupled to the heat conductive member so as to face the yoke with the heat conductive member interposed therebetween.

Meanwhile, another object of the present invention is to provide an electronic device having a speaker unit, the speaker unit comprising: a speaker having a yoke; It is preferable to include a thermally conductive member coupled to the yoke so as to contact the yoke.

The apparatus may further include a cabinet coupled to the main body of the electronic device, the cabinet having an opening at one side, and the thermal conductive member may be coupled to the cabinet to block the opening and to be in contact with the yoke.

The speaker unit preferably further includes a heat dissipation member coupled to the heat conductive member to face the yoke with the heat conductive member interposed therebetween.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The electronic device according to the present invention includes various electronic products such as a television, an information processing device such as a PDA and an MP3, and a computer. Hereinafter, for convenience of description, an electronic device according to the present invention will be described as an example of a portable computer. Here, the portable computer includes all portable computers, such as a laptop computer or a laptop computer.

In various embodiments, like reference numerals refer to like elements, and like reference numerals refer to like elements in the first embodiment and may be omitted in other embodiments.

First embodiment

As illustrated in FIGS. 1 and 2, the portable computer 100 according to the first embodiment of the present invention is combined with the main body 110 and the main body 110 to form an image. It includes a monitor 103.

As illustrated in FIG. 1, the main body 110 may include a keyboard 105 through which a user may input, a power supply port (not shown) provided to supply power, and sound waves generated from the speaker 130. It includes a speaker hole 107 formed in the plate surface to be delivered. The main body 110 accommodates the speaker 130 therein, and the speaker 130 may be exposed from the main body 110 as necessary.

The monitor 103 is hinged with the main body 110 to rotate about the main body 110, and forms an image to provide to the user.

The speaker unit 120 includes a speaker 130 and a thermal conductive member 150.

The speaker 130 includes a yoke 131, a magnet 133, a pole piece 135, a voice coil 137, and a diaphragm 139.

The yoke 131 is provided at the rear of the speaker 130 and supports the magnet 133, as shown in FIG. 2. The heat conductive member 150 is coupled to the yoke 131 such that the heat conductive member 150 is in surface contact with each other to maximize the contact area. The yoke 131 may have various structures such as a “U” shaped structure to accommodate the mast net 133 unlike the embodiment.

The magnet 133 forms a magnetic force line to generate an electromagnetic force together with a current flowing through the voice coil 137, and may have various shapes such as a ring according to the structure of the speaker 130.

In the voice coil 137, an electromagnetic force is generated by the action of the magnet 133 and the current generated by the supplied power. Thus, heat is generated in the voice coil 137.

Here, the heat generated from the voice coil 137 may vary depending on the output range, size, and the like of the speaker 130. Being able to quickly dissipate the generated heat can also provide a relatively high power speaker 130.

The heat conductive member 150 is coupled to the yoke 131 to contact the yoke 131. Accordingly, the heat conductive member 150 receives heat generated from a heat generating unit such as the voice coil 137 of the speaker 130 and quickly releases heat to the outside of the speaker 130. The heat conductive member 150 may include a material that can be stretched and deformed so as to increase the contact area with the yoke 131 even with respect to various shapes of the yoke 131. The thermally conductive member 150 includes a plate-shaped thermal pad. The material of the heat conductive member 150 may include silicon or the like. The heat conductive member 150 may be easily attached to the yoke 131 by including an adhesive material on the surface thereof, but may be coupled to the yoke 131 using an adhesive, if necessary. The thermal conductive member 150 may include a through hole (not shown) through which a cable (not shown) for supplying power to the speaker 130 passes. Here, the heat conducting member 150 is an example that is coupled to the yoke 131 receives the heat generated from the heat generating unit, such as the voice coil 137, but a heat generating unit such as the voice coil 137 as needed Can be coupled directly to

Accordingly, the heat generated from the speaker 130 can be quickly discharged to the outside, and the elastic deformation is easy to facilitate attachment to the yoke 131 of various shapes, it is necessary to the rear of the thermal conductive member 150 The parts can be easily attached.

With this configuration, the operation of the portable computer 100 having the speaker unit 120 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2 as follows.

When a current is applied to the voice coil 137, an electromagnetic force is generated by the current flowing through the voice coil 137 and the magnet 133, and the electromagnetic force vibrates the diaphragm 139 up and down. Sound waves are generated by the vibration of the diaphragm 139. At this time, heat is generated in the voice coil 137 and the generated heat is transferred to the yoke 131. The heat conduction member 150 coupled to the yoke 131 by widening the contact area as much as possible transmits heat quickly from the yoke 131 to release heat to the outside of the speaker 130. In the high power speaker 130, more heat is generated.

Thus, the heat generated from the speaker 130 can be quickly discharged to the outside to provide a high output speaker.

In this embodiment, the cabinet 140 will be described later, but the cabinet 140 may be included.

Second embodiment

As shown in FIGS. 1 and 3, the speaker unit 120 of the portable computer 100 according to the second embodiment of the present invention further includes a cabinet 140, and the heat conductive member 150 includes a yoke ( 131 is coupled to the cabinet 140 to be in contact.

The cabinet 140 is coupled to the main body 110 of the portable computer 100, as shown in FIG. 3. The cabinet 140 surrounds the outside of the speaker 130 to accommodate the speaker 130. The cabinet 140 may have an opening 143 around the yoke 131 behind the speaker 130 to dissipate heat generated by the speaker 130 in the case of the high power speaker 130. The cabinet 140 includes a material such as plastic. In an embodiment, the cabinet 140 is provided in a cylindrical shape, but may include various shapes such as a square hexagon.

The opening 143 may be opened along the circumference of the yoke 131 as in the third embodiment, but may be formed of a plurality of small holes. That is, the structure of the speaker unit 120 may be open. The opening 143 may cause sound deformation or vibration by sound waves leaking to the rear of the speaker 130.

The heat conductive member 150 is coupled to the cabinet 140 and the yoke 131 to contact the opening 143 and the yoke 131 formed in the cabinet 140. The heat conductive member 150 preferably includes a material having excellent sound absorption so as to absorb sound waves transmitted to the rear of the speaker 130.

Thus, the speaker unit 120 according to the second embodiment of the present invention can improve the sound quality generated by the speaker unit 120 by preventing vibration and sound deformation. In addition, the thermally conductive member 150 may be elastically deformed and thus easily attach the thermally conductive member 150 to the existing speaker unit 120.

Third embodiment

The portable computer 100 according to the third embodiment of the present invention further includes a heat dissipation member 160 in the configuration of the first embodiment, as shown in FIGS. 1 and 4.

As shown in FIG. 4, the heat dissipation member 160 is coupled to the heat conductive member 150 to face the yoke 131 with the heat conductive member 150 therebetween. The heat dissipation member 160 may quickly release heat transferred to the heat conduction member 150. The heat dissipation member 160 may include various means such as a heat sink to widen the heat dissipation area so that heat generated from the speaker unit 120 can be quickly discharged to the outside.

Thus, heat generated by the heat dissipation member and transmitted to the heat conduction member may be rapidly released to the outside.

Fourth embodiment

The portable computer 100 according to the fourth embodiment of the present invention further includes a heat dissipation member 160 in the configuration of the second embodiment, as shown in FIGS. 1 and 5.

Thus, heat generated by the heat dissipation member and transmitted to the heat conduction member may be rapidly released to the heat dissipation member to the outside.

Although the above embodiment has been described with reference to the speaker structure as shown in the drawings, it is a matter of course that the present invention can be applied to a speaker having various modified structures.

As described above, according to the present invention, the heat generated from the speaker can be quickly discharged to the outside by the heat conducting member or the heat dissipating member, thereby increasing the output of the speaker.

In addition, by blocking the opening of the cabinet with a heat conductive member to absorb the vibration can improve the sound quality.

In addition, the thermally deformable thermally conductive member can be easily coupled to the existing speaker unit and can be flexibly assembled.

Claims (9)

In the speaker unit for an electronic device, A speaker having a yoke; And a heat conductive member coupled to the yoke such that the yoke contacts the yoke. The method of claim 1, Further comprising a cabinet coupled to the body of the electronic device, The thermally conductive member is coupled to the cabinet to be in contact with the yoke. The method of claim 2, The cabinet has an opening at one side, The thermally conductive member is coupled to the cabinet and the yoke to block the opening. The method according to claim 2 or 3, The heat conducting member is a speaker unit, characterized in that it comprises a plate-shaped thermal pad (thermal pad). The method according to claim 1 or 2, And a heat dissipation member coupled to the heat conductive member so as to face the yoke with the heat conductive member interposed therebetween. In an electronic device having a speaker unit, The speaker unit, A speaker having a yoke; And a heat conductive member coupled to the yoke such that the yoke contacts the yoke. The method of claim 6, Further comprising a cabinet coupled to the body of the electronic device, The thermally conductive member is coupled to the cabinet to be in contact with the yoke. The method of claim 7, wherein The cabinet has an opening at one side, The thermally conductive member is coupled to the cabinet and the yoke to block the opening. The method according to claim 6 or 7, The speaker unit, And a heat dissipation member coupled to the heat conductive member so as to face the yoke with the heat conductive member interposed therebetween.

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