Portable Multimedia Bluetooth Speaker

Abstract

The present invention discloses a portable multimedia Bluetooth speaker, which includes an outer housing, a heat-conducting inner housing, a battery, a control board and a speaker unit. The heat-conducting inner housing includes a bottom plate portion and an annular side wall. The annular side wall is disposed around the upper periphery of the bottom plate portion. The inner cavity of the outer housing is divided by the bottom plate portion to form a lower cavity and an upper cavity. The battery is located in the lower cavity, and the upper end surface of the battery abuts against the bottom plate portion. The control board is disposed on the top of the bottom plate portion. A raised inner edge is provided at the top of the inner side wall of the annular side wall. The speaker unit includes a conical diaphragm, and the conical diaphragm is mounted on the raised inner edge. A communication channel is provided in the heat-conducting inner housing. The communication channel is partially disposed in the bottom plate portion and partially extends to the annular side wall. A phase-change liquid is injected into the communication channel. This technical solution is used to solve the problem of insufficient heat dissipation efficiency in existing portable Bluetooth speakers.

Description

Technical Field

[0001] The present invention belongs to the technical field of Bluetooth speakers, and particularly relates to a portable multimedia Bluetooth speaker. Background Art

[0002] A Bluetooth speaker refers to a sound device with a built-in Bluetooth chip that replaces traditional wire connections with Bluetooth connections. By connecting to multimedia playback devices such as mobile phones, tablets, and laptops, it achieves the purpose of convenience and speed. Currently, Bluetooth speakers are mainly portable speakers, generally with a relatively small and portable shape. The Bluetooth speaker technology has gradually been valued and accepted by consumers due to its convenience.

[0003] However, portable Bluetooth speakers generally have a high degree of integration, which also leads to the problem of insufficient heat dissipation. The heat of the Bluetooth speaker mainly comes from the heat generated by battery power supply and the heat generated by the control board power amplifier circuit. The accumulation of internal heat will cause the internal circuit to age, and in severe cases, it will cause the electronic components to burn out. Due to the requirements of waterproofness, power consumption, and volume reduction, a fan is generally not provided for heat dissipation. Summary of the Invention

[0004] In view of the above existing technical problems, the present invention provides a portable multimedia Bluetooth speaker to solve the problem of insufficient heat dissipation efficiency of existing portable Bluetooth speakers. The portable multimedia Bluetooth speaker effectively improves the heat dissipation efficiency through the vibration of a conical diaphragm, and at the same time effectively ensures its sealing performance and avoids an increase in volume.

[0005] The present invention provides a portable multimedia Bluetooth speaker, including an outer shell, a heat-conducting inner shell, a battery, a control board, and a speaker unit. The outer shell is a semi-closed shell with an open top. The heat-conducting inner shell is a semi-closed shell with an open top. The heat-conducting inner shell is sleeved in the outer shell, and the open top of the heat-conducting inner shell covers the open top of the outer shell. The heat-conducting inner shell includes a bottom plate portion and an annular side wall. The annular side wall is disposed around the upper periphery of the bottom plate portion. The bottom plate portion divides the inner cavity of the outer shell into a lower cavity and an upper cavity. The battery is located in the lower cavity, and the upper end surface of the battery abuts against the bottom plate portion. The control board and the speaker unit are located in the upper cavity. The control board is disposed on the top of the bottom plate portion. A raised inner edge is provided at the top of the inner side wall of the annular side wall. The speaker unit includes a conical diaphragm, and the conical diaphragm is installed on the raised inner edge. A communication channel is provided in the heat-conducting inner shell. The communication channel is partially disposed in the bottom plate portion and partially extends to the annular side wall. A phase-change liquid is injected into the communication channel. The control board is electrically connected to the speaker unit and the battery respectively.

[0006] Further, the horn unit includes a permanent magnet, a conical diaphragm, an extension cylinder, and a coil. The outer edge of the conical diaphragm is fixed to the inner edge of the protrusion. The extension cylinder is located at the inner edge of the conical diaphragm. The permanent magnet is located inside the extension cylinder. The coil is disposed around the outer periphery of the extension cylinder.

[0007] Further, the horn unit further includes a dust cap. The dust cap is located at the inner edge of the conical diaphragm and closes the extension cylinder.

[0008] Further, a plurality of hollow portions for exposing the annular side wall are formed on the side wall of the outer housing.

[0009] Further, a lead hole for the wire to pass through is formed in the bottom plate portion.

[0010] Further, a Bluetooth module is provided on the control board.

[0011] Further, a charging port is provided on the outer housing. The charging port is electrically connected to the control board.

[0012] Further, both the outer housing and the heat-conducting inner shell are of a cylindrical structure.

[0013] The portable multimedia Bluetooth speaker is provided with a heat-conducting inner shell. Through the bottom plate portion of the heat-conducting inner shell, the heat generated by the operation of the control board and the battery can be conducted. The phase-change liquid in the bottom plate portion vaporizes and absorbs heat under the condition of being heated. At the same time, the vaporized gas will rise into the annular side wall. After cooling and liquefying through the heat dissipation of the annular side wall, the liquefied phase-change liquid re-enters the bottom plate portion under the action of gravity to absorb heat, forming a cycle. Since the phase-change liquid has surface tension in the communication channel of the annular side wall, the phase-change liquid adheres to the annular side wall, resulting in its difficulty in falling simply by the action of gravity. To solve this problem, in the present invention, the conical diaphragm is installed on the inner edge of the protrusion of the annular side wall. Thus, when the Bluetooth speaker works, the conical diaphragm will generate vibrations, and the vibrations are directly transmitted to the annular side wall, driving the annular side wall to vibrate, which can effectively break the liquid film formed by the surface tension of the phase-change liquid, promote the phase-change liquid to fall to the bottom portion, effectively promote the circulation of the phase-change liquid, and further effectively improve the heat dissipation efficiency of the portable multimedia Bluetooth speaker. At the same time, the portable multimedia Bluetooth speaker does not need to be provided with heat-conducting holes or fans, which can effectively ensure its waterproof and dustproof performance and avoid the problem of increasing the volume due to additional heat dissipation settings. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a portable multimedia Bluetooth speaker. Detailed implementation manners

[0016] The present invention discloses a portable multimedia Bluetooth speaker. The portable multimedia Bluetooth speaker effectively improves the heat dissipation efficiency through the vibration of the conical diaphragm, and at the same time effectively ensures its sealing performance and avoids an increase in volume.

[0017] The following will clearly and completely describe the technical solutions in the present invention with reference to the drawings in the present invention. Obviously, the described are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] See Figure 1 As shown, the present invention discloses a portable multimedia Bluetooth speaker, including an outer housing 4, a heat-conducting inner housing 15, a battery 13, a control board 11, and a speaker unit. The outer housing 4 is a semi-closed housing with an open top. The heat-conducting inner housing is a semi-closed housing with an open top. The heat-conducting inner housing is sleeved in the outer housing 4, and the open top of the heat-conducting inner housing covers the open top of the outer housing 4. The heat-conducting inner housing includes a bottom plate portion 14 and an annular side wall 1. The annular side wall 1 is disposed around the upper periphery of the bottom plate portion 14. The inner cavity of the outer housing 4 is divided by the bottom plate portion 14 into a lower cavity 12 and an upper cavity 10. The battery 13 is located in the lower cavity 12, and the upper end surface of the battery 13 abuts against the bottom plate portion 14. The control board 11 and the speaker unit are located in the upper cavity 10. The control board 11 is disposed on the top of the bottom plate portion 14. A raised inner edge 5 is provided at the top of the inner side wall of the annular side wall 1. The speaker unit includes a conical diaphragm 6. The conical diaphragm 6 is mounted on the raised inner edge 5. A communication channel 3 is provided in the heat-conducting inner housing 15. The communication channel 3 is partially located in the bottom plate portion 14 and partially extends to the annular side wall 1. A phase change liquid is injected into the communication channel 3. The control board 11 is electrically connected to the speaker unit and the battery 13 respectively.

[0019] This portable multimedia Bluetooth speaker is provided with a heat-conducting inner shell 15. Through the bottom plate portion 14 of the heat-conducting inner shell 15, the heat generated by the operation of the control board 11 and the battery 13 can be conducted. The phase-change liquid in the bottom plate portion 14 vaporizes and absorbs heat under the condition of being heated. At the same time, the vaporized gas will rise to the annular side wall 1, cool and liquefy after dissipating heat through the annular side wall 1, and the liquefied phase-change liquid will re-enter the bottom plate portion 14 to absorb heat under the action of gravity, forming a cycle. Due to the surface tension of the phase-change liquid in the communication channel 3 of the annular side wall 1, the phase-change liquid adheres to the annular side wall 1, resulting in its difficulty in falling simply by the action of gravity. To solve this problem, in the present invention, the conical diaphragm 6 is installed on the raised inner edge 5 of the annular side wall 1. Thus, when the Bluetooth speaker is working, the conical diaphragm 6 will generate vibrations, and these vibrations are directly transmitted to the annular side wall 1, driving the annular side wall 1 to vibrate, which can effectively break the liquid film formed by the surface tension of the phase-change liquid, promote the phase-change liquid to fall to the bottom portion, effectively promote the circulation of the phase-change liquid, and further effectively improve the heat dissipation efficiency of the portable multimedia Bluetooth speaker. At the same time, this portable multimedia Bluetooth speaker does not need to be provided with heat-conducting holes or fans, which can effectively ensure its sealing and waterproof performance and avoid the problem of the additional heat dissipation setting increasing the volume.

[0020] The speaker unit includes a permanent magnet 9, a conical diaphragm 6, an extension tube 16 and a coil 8. The outer edge of the conical diaphragm 6 is fixed on the raised inner edge 5. The extension tube 16 is located inside the inner edge of the conical diaphragm 6. The permanent magnet 9 is located inside the extension tube 16. The coil 8 is disposed around the outer periphery of the extension tube 16.

[0021] The coil 8 is electrically connected to the control board 11. By outputting an audio current through the control board 11, the coil 8 is driven to vibrate relative to the permanent magnet 9, thereby driving the conical diaphragm 6 to vibrate and generate sound, and at the same time driving the annular side wall 1 to vibrate.

[0022] The speaker unit further includes a dust cover 7. The dust cover 7 is located at the inner edge of the conical diaphragm 6 and closes the extension tube 16.

[0023] A plurality of hollow portions 2 for exposing the annular side wall 1 are provided on the side wall of the outer housing 4.

[0024] The hollow portions 2 facilitate heat dissipation between the annular side wall 1 and the external air. At the same time, the outer housing 4 can prevent the operator's hand from directly contacting the heat-conducting inner shell 15, reducing the heat sensation of the operator.

[0025] The bottom plate portion 14 is provided with a lead hole for the wire to pass through.

[0026] A Bluetooth module is provided on the control board 11, and the Bluetooth module is used for Bluetooth connection with an external multimedia device.

[0027] A charging port is provided on the outer housing 4, and the charging port is electrically connected to the control board 11, and the battery 13 is charged through the charging port.

[0028] Both the outer housing 4 and the heat-conducting inner shell 15 are cylindrical structures.

[0029] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A portable multimedia Bluetooth speaker, characterized in that, It includes an outer shell, a heat-conducting inner shell, a battery, a control board and a speaker unit. The outer shell is a semi-closed shell with an open top. The heat-conducting inner shell is a semi-closed shell with an open top. The heat-conducting inner shell is sleeved in the outer shell, and the open top of the heat-conducting inner shell covers the open top of the outer shell. The heat-conducting inner shell includes a bottom plate portion and an annular side wall. The annular side wall is disposed around the upper outer periphery of the bottom plate portion. The inner cavity of the outer shell is separated by the bottom plate portion to form a lower cavity and an upper cavity. The battery is located in the lower cavity, and the upper end surface of the battery abuts against the bottom plate portion. The control board and the speaker unit are located in the upper cavity. The control board is disposed on the top of the bottom plate portion. There is a raised inner edge at the top of the inner side wall of the annular side wall. The speaker unit includes a conical diaphragm, and the conical diaphragm is mounted on the raised inner edge. There is a communication channel provided in the heat-conducting inner shell. The communication channel is partially disposed in the bottom plate portion and partially extends to the annular side wall. A phase change liquid is injected into the communication channel. The control board is electrically connected to the speaker unit and the battery respectively.

2. The portable multimedia Bluetooth speaker according to claim 1, characterized in that, The speaker unit includes a permanent magnet, a conical diaphragm, an extension tube and a coil. The outer edge of the conical diaphragm is fixed on the raised inner edge. The extension tube is located inside the inner edge of the conical diaphragm. The permanent magnet is located inside the extension tube. The coil is disposed around the outer periphery of the extension tube.

3. The portable multimedia Bluetooth speaker according to claim 2, wherein, The speaker unit further includes a dust cover. The dust cover is located inside the inner edge of the conical diaphragm and closes the extension tube.

4. A portable multimedia Bluetooth speaker according to claim 1, characterized in that, A plurality of hollowed-out portions for exposing the annular side wall are provided on the side wall of the outer shell.

5. A portable multimedia Bluetooth speaker according to claim 1, wherein The bottom plate portion is provided with a lead hole for wires to pass through.

6. The portable multimedia Bluetooth speaker according to claim 1, characterized in that, A Bluetooth module is provided on the control board.

7. A portable multimedia Bluetooth speaker according to claim 1, characterized in that, A charging port is provided on the outer shell. The charging port is electrically connected to the control board.

8. A portable multimedia Bluetooth speaker according to claim 1, characterized in that, Both the outer shell and the heat-conducting inner shell are cylindrical structures.

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