KR102306062B1 - Movable Loudspeaker - Google Patents

Abstract

Provided is a portable loudspeaker. The portable loudspeaker according to an exemplary embodiment of the present invention comprises: one or more loudspeaker parts that convert and amplify an electrical signal into a voice signal; a frame coupled to the loudspeaker part to support the loudspeaker part; a battery mounting part located inside the frame, and having a battery mounted therein; a control part integrate-coupled to one side surface of the battery mounting part, and having a control panel formed on an outer side surface thereof; and a direction adjustment part coupled to one side surface of the frame so that one end part of the frame and one end part of the loudspeaker part are activated according to a direction perpendicular to the ground surface, wherein the battery mounting part and the control part may automatically maintain a horizontal based on the frame. Therefore, the present invention is capable of preventing an accident such as leakage of an electrolyte from the battery.

Description

Movable Loudspeaker

The present invention relates to a mobile loudspeaker.

In general, a loudspeaker is an amplifier that converts an electrical signal into an audio signal by vibrating a sounding board with a coil and a permanent magnet, a power supply unit that supplies power to the amplifier, a control unit that controls each component of the loudspeaker, and the audio signal generated by the amplifier. It contains a horn that is oriented in a direction.

Briefly explaining how the loudspeaker works, when a user inputs a voice through a microphone or executes data stored in the storage device, the control unit converts the voice signal or the stored data into an electrical signal and transmits it to the amplifier, and the amplifier transmits the electrical signal. The signal is converted into a voice signal, and the converted voice signal is spread in a predetermined direction riding on the horn.

In this case, a loudspeaker having an output greater than a certain amount inevitably becomes heavy in volume and mass, so it is difficult to change a position or change a direction. To solve this problem, a method of installing a loudspeaker in a vehicle existed, but such modification was one of the violations of the Automobile Management Act.

In addition, a high-power loudspeaker inevitably requires a large-capacity battery, and the lead-acid battery, which has the highest energy storage capacity compared to the cost, consists of a lead electrode and an electrolyte of a sulfuric acid solution. If such a lead battery is used without a safety device, the sulfuric acid solution may leak to the outside due to overturning during transport or an impact, etc.

Accordingly, there is a need for a loudspeaker capable of simultaneously securing stability and output while having mobility.

SUMMARY One embodiment of the present invention is to provide a loudspeaker capable of easily changing a directing direction with mobility and ensuring safety.

According to an aspect of the present invention, at least one loudspeaker for converting and amplifying an electrical signal into a voice signal; a frame coupled to the loudspeaker to support the loudspeaker; a battery mounting unit located inside the frame and having a battery mounted therein; a control unit integrally coupled to one side of the battery mounting unit and having a control panel formed on an outer side thereof; and an orientation control unit coupled to one side of the frame so that one end of the frame and one end of the loudspeaker are activated in a direction perpendicular to the ground surface, wherein the battery mounting unit and the control unit are automatically based on the frame A portable loudspeaker is provided that is leveled with the

In addition, the frame has a longitudinal direction perpendicular to the ground, and a bar-shaped second frame bar in which a first coupling member for binding the loudspeaker is formed on a surface in contact with the loudspeaker in contact with the outer surface of the loudspeaker. Including, wherein the battery mounting unit, the battery is mounted therein, a mounting case in which one side of the mounting space is formed to be opened to the outside; and a pair of balancing shafts protruding from the outer surface of the mounting case to both sides and in contact with the upper end of the second frame bar, wherein extension lines of the balancing shaft in the longitudinal direction coincide with each other, and the longitudinal direction of the balancing shaft is the The battery mounting unit, the control unit, and the center of gravity formed by the battery are spaced apart from each other at a predetermined distance in a direction perpendicular to the ground, and the center of the upper end of the second frame bar has the same longitudinal direction as the longitudinal direction of the balance shaft. and a rotation groove that is a groove into which the balance shaft is inserted may be formed.

In addition, the frame may include: a bar-shaped first frame bar provided in plurality and having a longitudinal direction corresponding to the longitudinal direction of the loudspeaker; a support bar connected to the other end of the plurality of first frame bars, having a longitudinal direction perpendicular to the longitudinal direction of the first frame bar and the second frame bar, and having a support wheel formed on one side thereof; a reinforcing bar having a longitudinal direction corresponding to the longitudinal direction of the first frame bar and coupled to an outer surface of the second frame bar; and a third frame bar connected to one end of the reinforcing bar or the first frame bar and having a second coupling member in contact with the outer surface of the loudspeaker on an outer surface thereof.

In addition, the battery mounting unit may include an opening and closing member for opening and closing the mounting space of the mounting case.

In addition, the orientation control unit has a longitudinal direction perpendicular to the longitudinal direction of the third frame bar, and at least one of the plurality of first directing bars and the plurality of first directing bars that pass through and are coupled to the third frame bar It is disposed between the bars, has a longitudinal direction in a longitudinal direction of the first facing bar and a direction perpendicular to the longitudinal direction of the third frame bar, both ends of which are coupled to the outer surfaces of the plurality of first facing bars a directional frame having one or more second directional bars; a handle extending from one end of at least one of the plurality of first directional bars; a plate-shaped support plate coupled to the other end of at least one of the plurality of first directional bars, the support member being formed in contact with and supporting the ground in a surface facing the ground; a direction control cylinder having an outer surface coupled to one end of the support plate, a longitudinal direction having the same tube shape as that of the first directing bar, and having a hollow portion formed therein; and a direction control member positioned inside the direction control cylinder, a screw thread is formed on the outer surface, and has a direction control column which is moved along the longitudinal direction of the direction control cylinder through rotation.

The portable loudspeaker according to an embodiment of the present invention can prevent safety accidents such as leakage of electrolyte from a battery while securing mobility.

The portable loudspeaker according to an embodiment of the present invention can prevent safety accidents such as leakage of electrolyte from a battery while easily changing a direction of orientation.

1 is a perspective view of a portable loudspeaker according to an embodiment of the present invention;
FIG. 2 is a perspective view of the frame, the battery mounting unit, the control unit, and the orientation adjustment unit shown in FIG. 1 .
3 is a state diagram illustrating a state in which the second frame and the battery mounting unit shown in FIG. 2 are coupled.
4 is a perspective view of the orientation control unit shown in FIG. 1 .
5 (a) and (b) are operational state diagrams showing a state in which the frame and the battery mounting unit are inclined according to the operating state of the orientation control unit shown in FIG. 1 .

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

1 is a perspective view of a portable loudspeaker according to an embodiment of the present invention;

Referring to FIG. 1 , the portable loudspeaker 1 according to an embodiment of the present invention includes a loudspeaker 100 , a frame 300 , a battery mounting unit 500 , a control unit 700 , and a direction control unit 900 . can do.

Through this, the portable loudspeaker 1 according to an embodiment of the present invention can prevent safety accidents such as leakage of electrolyte from a battery while securing mobility.

In an embodiment of the present invention, one or more loudspeakers 100 may be provided according to the usage situation or location of the portable loudspeaker 1 according to the embodiment of the present invention. For example, in a place such as a stadium where voice amplification is essential, a plurality of loudspeakers 100 may be provided. can be configured in such a way as to reduce the number of

Also, the loudspeaker 100 may include a driver unit 110 , a horn 130 , and an extension member 150 .

One or more driver units 110 may be provided and may be wiredly coupled to a control unit 700 or a battery mounting unit 500 to be described later through an electric wire (not shown). In addition, the driver unit 110 may be a sound emitting body that receives power and electrical signals from the control unit 700 , converts them into audio signals, and amplifies the size of the signals. To this end, the driver unit may use a dynamic driver structure having an electromagnet and a diaphragm therein, but the present invention is not limited thereto, and various configurations and structures may be used as long as an electrical signal can be easily converted and amplified into an audio signal.

Meanwhile, one or more horns 130 may be provided to correspond to the number of driver units 110 , and one end may be connected to the driver unit 110 , and the other end may be coupled to the extension member 150 . In addition, the horn 130 has a longitudinal direction in a direction horizontal to the ground, has a hollow in the center, and can be formed in a tube shape in which the cross-sectional area in the width direction increases from the driver unit 110 direction to the extension member 150 direction. have.

The horn 130 allows the audio signal generated from the driver unit 110 to be directed toward the other end of the horn 130 in such a way that the audio signal generated from the driver unit 110 is reflected from the inside.

The expansion member 150 may have a funnel shape in which a hollow part is formed therein, one end is coupled to the other end of the horn 130, and the cross-sectional area in the width direction increases from one end direction to the other end direction. .

The extension member 150 may be selectively installed on the horn 130 as shown in FIG. 1 . The extension member 150 may be selectively mounted on the horn 130 so that a voice signal directed from the horn 130 is diffused through diffraction.

FIG. 2 is a perspective view of the frame, the battery mounting unit, the control unit, and the orientation adjustment unit shown in FIG. 1 , and FIG. 3 is a state diagram illustrating a state in which the second frame shown in FIG. 2 and the battery mounting unit are coupled.

In the following description, as seen in FIG. 2 , the direction of the reinforcement bar 390 in the first frame bar 310 is defined upward, and the direction of the first frame bar 310 is defined in the direction of the reinforcement bar 390 as downward. Explain.

Referring to FIG. 2 , in an embodiment of the present invention, the frame 300 includes a first frame bar 310 , a second frame bar 330 , a support bar 350 , a third frame bar 370 and a reinforcing bar. (390).

In an embodiment of the present invention, the first frame bar 310 may have a bar shape having a longitudinal direction corresponding to the longitudinal direction of the horn 130 of the loudspeaker 100 . For example, it has a longitudinal direction similar to the longitudinal direction of the horn 130, one end of the first frame bar 310 may be located above the other end. Through this, by having a predetermined angle with the longitudinal direction of the horn 130 having a longitudinal direction horizontal to the ground, each configuration can be easily supported in the orientation adjustment process of the orientation control unit 900 to be described later. .

Also, a plurality of first frame bars 310 may be provided, for example, as a pair. The pair of first frame bars 310 may be disposed to be spaced apart from each other at a predetermined distance. A control unit 700 and a battery mounting unit 500, which will be described later, may be positioned between the separated distances.

Meanwhile, the second frame bar 330 may be formed in a bar shape having a lower end coupled to the upper surface of the first frame bar 310 and having a longitudinal direction in a direction perpendicular to the ground. At this time, the second frame bar 330 has a hollow portion therein, so that the overall weight of the second frame bar 330 can be reduced.

At this time, as shown in FIG. 3 , a part of the upper end of the second frame bar 330 may be cut and a guiding groove 333 may be formed. In this case, the depth of the guiding groove 333 may be configured to increase toward the center of the second frame bar 330 .

In addition, a rotation groove 335 may be formed in the center of the guiding groove 333 . The rotation groove 335 may be formed in a shape corresponding to the balance shaft 530 of the battery mounting unit 500 so that the balance shaft 530 is inserted.

The user combines the battery mounting unit 500 to the frame 300 by inserting the balancing shaft 530 of the battery mounting unit 500 into the guiding groove 333 and the rotation groove 335 formed in the center of the guiding groove 333 . can do. However, the mass of the assembly of the battery mounting unit 500 , the battery 2 , and the control unit 700 is heavy in order to stably secure an output and at the same time have a stable balance. For this reason, it may be difficult to insert the balance shaft 530 into the rotation groove 335 due to its mass in the process of separating and recombining the battery mounting part 500 and the frame 300 in the maintenance process.

In order to solve this problem, a guiding groove 333 having an increased degree of cutting toward the center of the second frame bar 330 may be formed. The guiding groove 333 may allow the balance shaft 530 to slide down along the upper surface of the guiding groove 333 and be seated in the rotation groove 335 even if the balance shaft 530 is not placed in the correct position.

To this end, the longitudinal direction of the guiding groove 333 and the rotating groove 335 and the longitudinal direction of the center of the guiding groove 333 and the rotating groove 335 are formed to be the same as the longitudinal direction of the balance shaft 530, The shaft 530 may be easily inserted.

A first coupling member 331 may be formed on an outer surface corresponding to the loudspeaker 100 of the second frame bar 330 . For example, the inner surface of the curved portion of the first coupling member 331 is in contact with the outer surface of the horn 130 of the loudspeaker 100 , and both ends of the first coupling member 331 are coupled to the outer surface of the second frame bar 330 . may have a horseshoe shape.

The first coupling member 331 is configured to be detachable from the outer surface of the second frame bar 330 , so that the loudspeaker 100 can be selectively coupled to the frame 300 .

Meanwhile, in an embodiment of the present invention, the support bar 350 may have a bar shape having a longitudinal direction perpendicular to the longitudinal direction of the first frame bar 310 and the second frame bar 330 . In addition, the outer surface of the support bar 350 may be coupled to the other end of the plurality of first frame bars 310 to bind the plurality of first frame bars 310 to each other.

A support wheel 351 may be formed on the surface facing the ground among the outer surfaces of the support bar 350 . The support wheel 351 is provided to rotatably rotate the lower surface of the support bar 350 , and while supporting the lower surface of the support bar 350 , the mobile loudspeaker 1 according to an embodiment of the present invention can be easily moved. can make it happen

Meanwhile, in an embodiment of the present invention, the third frame bar 370 may be formed in a bar shape having the same length direction as that of the support bar 350 . In addition, a plurality of third frame bars 370 may be provided, and one of the plurality of third frame bars 370 may be coupled to one end of the plurality of first frame bars 310 .

The remaining third frame bar 370 that is not coupled to the first frame bar 310 is disposed above the third frame bar 370 coupled to the first frame bar 310 in a direction perpendicular to the ground, They may be coupled to each other through an orientation control unit 900 to be described later.

A second coupling member 371 may be formed on a surface of the third frame bar 370 in contact with the loudspeaker 100 . The second coupling member 371 has, for example, a curved inner surface in contact with the outer surface of the horn 130 of the loudspeaker 100 , and both ends of the horseshoe coupled to the upper surface of the third frame bar 370 . It may be formed in a shape.

In addition, the second coupling member 371 may be detachably coupled from the outer surface of the third frame bar 370 to selectively couple the loudspeaker 100 to the frame 300 .

Meanwhile, the reinforcing bar 390 may be formed in a bar shape having a longitudinal direction corresponding to the longitudinal direction of the first frame bar 310 . For example, the reinforcing bar 390 has a longitudinal direction similar to that of the first frame bar 310 , and is connected to the frame 300 and the frame 300 together with the first frame bar 310 of the present invention. Each structure of the portable loudspeaker 1 according to an embodiment can be easily supported.

The reinforcing bar 390 may be disposed between the third frame bar 370 and the second frame bar 330 that are not coupled to the first frame bar 310 . In addition, one end of the reinforcing bar 390 is coupled to the outer surface of the third frame bar 370 not connected to the first frame bar 310 , and the other end is coupled to the outer surface of the second frame bar 330 . can be Through this, the reinforcing bar 390 may enhance the durability of the frame 300 by reinforcing the supporting force of the first frame bar 310 .

Meanwhile, the battery mounting unit 500 may be disposed inside the frame 300 . Specifically, the first frame bar 310 , the second frame bar 330 , the support bar 350 , and the third frame bar 370 may be positioned at the center formed therein.

In addition, the battery mounting unit 500 may include a mounting case 510 , a balance shaft 530 , and an opening/closing member 550 .

In an embodiment of the present invention, the mounting case 510 may have a hexahedral case shape in which the mounting space 511, which is a hollow part, is formed therein. At this time, one side, for example, the upper surface of the mounting case 510 may be opened so that the mounting space 511 is exposed to the outside. The user may insert the battery 2 into the inside of the mounting case 510 through the open mounting space 511 on the upper side, or take out the battery with reduced power to the outside of the mounting case 510 .

At this time, the center of gravity (M) of the mounting case 510, the battery 2 inside the mounting case 510, and the control unit 700 coupled to the outer surface of the mounting case 510 is located inside the assembly of the three components. can do. The mounting case 510 and the control unit 700 may have a symmetrical hexahedral shape based on the orientation control unit 900 so that their center of gravity (M) is easily located inside each of the components.

Meanwhile, a plurality of balance shafts 530 may be provided in pairs, for example, one on the left and right outer surfaces of the mounting case 510 . In addition, the balance shaft 530 may have a cylindrical shape to correspond to the shape of the rotation groove 335 of the second frame bar 330 to be easily rotated. At this time, as shown in FIG. 2 , the extension lines L of the pair of balance shafts 530 in the longitudinal direction may be arranged to coincide with each other.

At this time, the extension line L in the longitudinal direction of the balance shaft 530 sets a predetermined distance in the direction perpendicular to the ground rather than the position of the center of gravity M of the battery 2 , the battery mounting unit 500 and the control unit 700 . It may be formed at a spaced apart position.

In one embodiment of the present invention, the balance shaft 530 may be inserted into the rotation groove 335 of the second frame bar 330 and rotated with the center of the rotation groove 335 as the rotation axis. Through this, the battery 2 stored inside the battery mounting unit 500 and the battery mounting unit 500 and the control unit 700 coupled to one side of the battery mounting unit 500 also rotate the balance shaft 530 as a central axis. can

At this time, by positioning the battery 2, the battery mounting unit 500 and the control unit 700 on the same vertical line as the extension line L of the pair of balance shafts 530 of the center of gravity M formed by the control unit 700, the battery ( 2), the battery mounting unit 500 and the control unit 700 have the center of gravity (M) as a material point, and the movement of the pendulum may be simplified around the balance axis 530 .

At this time, when an external force such as vibration or shock is applied from the outside, the applied external force is converted into kinetic energy so that the battery 2 , the battery mounting unit 500 , and the control unit 700 perform pendulum motion. However, this kinetic energy is lost due to friction with air or friction between the balance shaft 530 and the rotation groove 335, and the state before finally moving, that is, the extension line (L) and the center of gravity (M) are the same It will return to its position on the vertical line.

In this process, the extension line (L) and the center of gravity (M) are spaced apart from each other in the vertical direction. The greater the distance, that is, the greater the distance between the mass point and the rotation axis in pendulum motion, the greater the external force even if the same kinetic energy is applied. The swing angle is reduced by

That is, in one embodiment of the present invention, the balance shaft 530 has an extension line L of its length at a predetermined distance from the center of gravity M of the battery 2 , the battery mounting unit 500 and the control unit 700 . By being located at the upper side, it is possible to prevent accidents such as the battery 2 stored therein falling down by causing the mounting case 510 to shake relatively less even when externally shaken. In addition, without additional external power supply, the point at which the potential energy is automatically minimized, that is, the extension line (L) can be positioned on a vertical line with the center of gravity (M) to achieve equilibrium.

Through this, the portable loudspeaker 1 according to an embodiment of the present invention can prevent safety accidents such as leakage of electrolyte from a battery while securing mobility.

Meanwhile, in an embodiment of the present invention, the opening/closing member 550 may be formed in the opening of the mounting space 511 of the mounting case 510 . For example, the opening/closing member 550 may be provided in the form of a plate to correspond to the shape of the opening of the mounting space 511 , and may selectively open or close the mounting space 511 .

To this end, the opening/closing member 550 and the mounting case 510 may be hinge-coupled to each other through a hinge 551 , such that the opening/closing member 550 is rotated around the hinge 551 . In addition, a handle (not shown) may be formed on one side of the opening and closing member 550 to be easily opened, but the present invention is not limited thereto, and various means for easily opening and closing may be used.

On the other hand, in an embodiment of the present invention, the control unit 700 may be integrally coupled to one side of the battery mounting unit 500 , for example, an outer surface in the direction of the third frame bar 370 . The control unit 700 and the battery mounting unit 500, and the battery 2 loaded on the battery mounting unit 500 form a center of gravity (M) located on the same vertical line as the extension line (L) of the balance shaft 530, Each configuration can be easily balanced.

Also, the control unit 700 may include a control body 710 and a control panel 711 .

The control body 710 may be formed in a hexahedral shape in the same manner as the mounting case 510 of the battery mounting unit 500 so as to be coupled to the battery mounting unit 500 and to be easily rotated inside the frame 300 . In addition, the control body 710 may be connected to the battery 2 and the configuration of the driver unit 110 of the loudspeaker 100 and other means such as wires. In addition, the control body 710 may have a storage means such as a processor for analyzing electrical signals and a memory for storing data therein. Through this, the data is analyzed, converted into an electrical signal, and transmitted to the driver unit 110 of the loudspeaker 100 so that the driver unit 110 converts and amplifies an electrical signal based on the data into a voice signal. .

A control panel 711 may be formed on one side of the control body 710 , for example, an upper side thereof. One or more control buttons 713 may be located on the control panel 711 . By manipulating the control button 713 , the user operates the power of the portable loudspeaker 1 according to an embodiment of the present invention, the overall size of the audio signal to be reproduced in the loudspeaker 100, and a specific wavelength band among the audio signals. You can perform operations such as equalizing to change the tone by adjusting the intensity.

Also, an input hole 715 that is one or more holes may be formed on the surface of the control panel 711 . The input hole 715 may be formed to insert a storage medium such as a USB, SD card, CD, or floppy disk. When the storage medium is inserted, the controller 700 may recognize music files such as mp3, wav, mp4, flac, etc. recorded in the storage medium, and transmit an electrical signal corresponding thereto to the loudspeaker 100 . The loudspeaker 100 may reproduce the transmitted electrical signal by changing it into an audio signal.

Alternatively, the input hole 715 may function as a connector connected to an instrument such as a microphone or guitar. When the user transmits an electrical signal to the control unit 700 by playing a microphone or musical instrument, the control unit 700 may transmit the electrical signal to the loudspeaker 100 to be amplified.

4 is a perspective view of the orientation control unit shown in FIG. 1 .

On the other hand, in an embodiment of the present invention, the orientation control unit 900 may include an orientation frame 910 , a support plate 930 and a orientation adjustment member 950 .

In an embodiment of the present invention, the directional frame 910 may include a first directional bar 911 and a second directional bar 913 .

The first directional bar 911 may be formed in a bar shape having a longitudinal direction perpendicular to the longitudinal direction of the third frame bar 370 . In addition, a plurality of first directing bars 911 may be provided, and each of the first directing bars 911 may be disposed to be spaced apart from each other by a predetermined distance.

At this time, at least one of the plurality of first directional bars 911 may be coupled through the plurality of third frame bars 370 . Through this, the first directional bar 911 can improve the stability of the frame 300 and the directional control unit 900 by allowing the third frame bar 370 to be coupled to each other.

At this time, a handle 915 may be formed at an upper end of the first facing bar 911 that is not coupled to the third frame bar 370 among the first facing bar 911 . The handle 915 has a bar shape extending in a direction perpendicular to the longitudinal direction of the first directing bar 911 and the second directing bar 913 from the upper end of the first directing bar 911, as shown in FIG. can have

In order to move the portable loudspeaker 1 according to an embodiment of the present invention, the user may hold the handle 915 and lift the direction of one end of the portable loudspeaker 1 . In this process, the support wheel 351 connected to the lower surface of the support bar 350 supports the other end direction of the mobile loudspeaker 1 according to an embodiment of the present invention, so that the user can easily use the mobile loudspeaker 1 . can be dragged and moved.

In this case, a cover (not shown) made of rubber, fiber, or polymer resin may be formed on the outer surface of the handle 915 to prevent the user from missing it due to the absence of frictional force.

The second directional bar 913 may be formed in a bar shape having a longitudinal direction perpendicular to the longitudinal direction of the first directional bar 911 . In addition, the second directional bar 913 may be disposed between the plurality of first directional bars 911 , and both ends thereof may be coupled to the outer surfaces of the plurality of first directional bars 911 . The second directional bar 913 may be coupled to the first directional bar 911 to form the entire directional frame 910 . In addition, the second directional bar 913 is provided in plurality, and at least one of the plurality of second directional bars 913 may be coupled to an end portion adjacent to the ground of the first directional bar 911 .

On the other hand, in an embodiment of the present invention, the support plate 930 is formed in the form of a plate, one side of the second directing bar 913 adjacent to the ground of the second directing bar 913 and the first directing bar 911 of It may be coupled with an end facing the ground. In this case, the support member 931 may be positioned on the surface of the support plate 930 facing the ground.

The support member 931 is, for example, formed in a cylindrical shape, and may be made of a material having a predetermined elastic force, such as synthetic rubber, natural rubber, or polymer resin. In a situation where the user does not adjust the direction of the loudspeaker 100 with the direction adjustment member 950, the support member 931 touches the ground, so that the mobile loudspeaker 1 according to an embodiment of the present invention is It can be fixed securely on the ground.

On the other hand, the orientation control member 950 is coupled to the outer surface of the support plate 930, it may be arranged on the same line as the plurality of first orientation bars (911).

In addition, the orientation adjustment member 950 may include an orientation adjustment cylinder 951 and a orientation adjustment column 953 .

The orientation control cylinder 951 may have the same longitudinal direction as the longitudinal direction of the first orientation bar 911 and may have a tube shape in which a hollow portion is formed in the center. In addition, the orientation control cylinder 951 may be installed at one end of the support plate 930, for example, at the end of the support plate 930 corresponding to the forward direction of the mobile loudspeaker 1 according to an embodiment of the present invention. have. In addition, the orientation control cylinder 951 may be formed with a spiral screw groove (not shown) on the inner surface.

The orientation control column 953 may be formed in a cylindrical shape having the same longitudinal direction as the orientation adjustment cylinder 951 . In addition, the orientation adjustment column 953 is inserted into the orientation adjustment cylinder 951, it can be moved along the longitudinal direction of the orientation adjustment cylinder (951).

A spiral-shaped screw thread 954 may protrude along the outer circumferential surface of the orientation control column 953 . The screw thread 954 is engaged with the screw groove of the orientation adjustment cylinder 951 and the orientation adjustment column 953 is rotated and can be activated along the longitudinal direction of the orientation adjustment cylinder 951 .

5 (a) and (b) are operational state diagrams showing a state in which the frame and the battery mounting unit are inclined according to the operating state of the orientation control unit shown in FIG. 1 .

The user can adjust the relative position of the lower end of the orientation adjustment column 953 by rotating the orientation adjustment column (953). For example, when there is no need to change the orientation direction of the loudspeaker 100 as shown in FIG. , it is possible to support the direction of one end of the mobile loudspeaker 1 according to an embodiment of the present invention with the support member 931 .

At this time, when it is necessary to change the orientation direction as shown in FIG. 5 ( b ), the lower end of the orientation adjustment column 953 may be moved in the ground direction by rotating the orientation adjustment column 953 .

As the lower end of the direction control post 953 protrudes toward the ground, one end of the portable loudspeaker 1 according to an embodiment of the present invention is raised upward. That is, the orientation control member 950 lifts the direction of one end of the frame 300 and may also change the orientation direction of the loudspeaker 100 connected to the frame 300 .

In this process, the control unit 700 and the battery mounting unit 500 connected to the second frame bar 330 are connected to the balance shaft 530 and the center of gravity even in the process where the orientation adjustment member 950 lifts the front of the frame 300 . (M) may be aligned along an axis perpendicular to the ground. That is, by maintaining the balance even in the process of changing the steering direction, it is possible to prevent the battery stored in the battery mounting unit 500 from losing balance and falling.

Through this, the portable loudspeaker 1 according to an embodiment of the present invention can prevent a safety accident such as leakage of the electrolyte of the battery while easily changing the orientation direction.

On the other hand, the orientation adjustment support 955 may be formed at the lower end of the orientation adjustment column 953 . The orientation adjustment support 955 is in direct contact with the ground instead of the lower end of the orientation adjustment column 953 to prevent the orientation adjustment column 953 from being damaged by the ground, and the orientation adjustment column 953 is excessively upward in the rotation process. By moving, it is possible to prevent separation from the orientation control cylinder (951).

In addition, a locking member 959 may be positioned at the upper end of the orientation control column 953 . The locking member 959 moves too downward in the course of the orientation adjustment column 953 being rotated, thereby preventing it from being separated from the orientation adjustment cylinder 951 .

On the other hand, the orientation adjustment member 950 may further include a locking member 957 penetrating the outer surface of the orientation adjustment cylinder 951 to press the outer surface of the orientation adjustment column 953 .

For example, a lock hole (not shown) is formed on the outer surface of the orientation control cylinder 951 , and the lock member 957 is inserted into the lock hole so that a part of the lock member 957 is formed on the orientation adjustment column 953 . It can also be accessed from the outside. At this time, a screw thread and a screw hole may be formed in a part of the lock hole and the lock member 957 to be screwed together.

Through this, the locking member 957 can fix the position of the orientation adjustment column 953 .

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

1: mobile loudspeaker 2: battery
100: loudspeaker 110: driver unit
130: horn 150: expansion member
300: frame 310: first frame bar
330: second frame bar 331: first coupling member
333: guiding groove 335: rotating groove
350: support bar 351: support wheel
370: third frame bar 371: second coupling member
390: reinforcement bar 500: battery mounting part
510: mounting case 511: mounting space
530: balance shaft 550: opening and closing member
551: hinge 700: control unit
710: control body 711: control panel
713: control button 715: input hole
900: orientation control unit 910: orientation frame
911: first directing bar 913: second directing bar
915: handle 930: support plate
931: support member 950: direction control member
951: direction control cylinder 953: direction control column
954: thread 955: orientation adjustment support
957: locking member 959: locking member

Claims (5)

one or more loudspeakers for converting and amplifying an electrical signal into a voice signal;
a frame coupled to the loudspeaker to support the loudspeaker;
a battery mounting unit located inside the frame and having a battery mounted therein;
a control unit integrally coupled to one side of the battery mounting unit and having a control panel formed on an outer side thereof; and
It is coupled to one side of the frame, and includes a direction control unit for maneuvering one end of the frame and one end of the loudspeaker in a direction perpendicular to the ground surface,
The battery mounting unit, the control unit is automatically maintained horizontally based on the frame,
The frame is
A second frame bar having a bar shape having a longitudinal direction perpendicular to the ground and having a first coupling member for binding the loudspeaker in contact with the outer surface of the loudspeaker on a surface in contact with the loudspeaker is formed;
The battery mounting unit,
a mounting case in which the battery is mounted therein, and a mounting space having one side open to the outside is formed; and
and a pair of balance shafts protruding from the outer surface of the mounting case to both sides and in contact with the upper end of the second frame bar,
Extension lines in the longitudinal direction of the balance shaft coincide with each other, and the longitudinal direction of the balance shaft is spaced apart by a predetermined distance from the center of gravity formed by the battery mounting unit, the control unit, and the battery in a direction perpendicular to the ground,
A mobile loudspeaker having a rotation groove having the same longitudinal direction as the longitudinal direction of the balance shaft and a rotation groove that is a groove into which the balance shaft is inserted in the center of the upper end of the second frame bar. delete According to claim 1,
The frame is
a bar-shaped first frame bar provided in plurality and having a longitudinal direction corresponding to the longitudinal direction of the loudspeaker;
a support bar connected to the other end of the plurality of first frame bars, having a longitudinal direction perpendicular to the longitudinal direction of the first frame bar and the second frame bar, and having a support wheel formed on one side thereof;
a reinforcing bar having a longitudinal direction corresponding to the longitudinal direction of the first frame bar and coupled to an outer surface of the second frame bar; and
and a third frame bar connected to one end of the reinforcing bar or the first frame bar and having a second coupling member contacting an outer surface of the loudspeaker on an outer surface thereof. 4. The method of claim 3,
and the battery mounting unit includes an opening/closing member for opening and closing the mounting space of the mounting case. 4. The method of claim 3,
The orientation control unit,
It has a longitudinal direction perpendicular to the longitudinal direction of the third frame bar, and at least one is disposed between a plurality of first directing bars and a plurality of first directing bars that pass through and are coupled to the third frame bar, Having at least one second directional bar having a longitudinal direction of the first directional bar and a direction perpendicular to the longitudinal direction of the third frame bar, both ends of which are coupled to the outer surfaces of the plurality of first directional bars oriented frame;
a handle extending from one end of at least one of the plurality of first directional bars;
a plate-shaped support plate coupled to the other end of at least one of the plurality of first directional bars, the support member being formed in contact with and supporting the ground in a surface facing the ground;
a direction control cylinder having an outer surface coupled to one end of the support plate, a longitudinal direction having the same tube shape as that of the first directing bar, and having a hollow portion formed therein; and a direction control member located inside the direction control cylinder, a direction adjustment member having a direction adjustment column having a screw thread formed on an outer surface thereof, and being moved along the longitudinal direction of the direction adjustment cylinder through rotation.

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