JPH07283791A - Wireless microphone - Google Patents

Abstract

PURPOSE:To use the drop-in-charge system for the compact and lightweight wireless microphone by providing an arm which extends from the connection part between a microphone body and a microphone head to the outside and mounting a light emitting diode. CONSTITUTION:A wireless microphone 1 is formed, in the outward appearance of a cylindrical microphone body 2, microphone head 3 consisting of a net body mounted by the engagement at the upper end of the microphone body 1, circular body 4 connected to the connection part between the microphone body 2 and the microphone head 3, and arm 5 projected from a circular body 4. A dark-colored cover 6 is provided at the end of the arm 5. A light emitting diode is housed inside of it. Thus, the light emitting diode which emits light can be mounted at the position apart from the influence of other things. It can be mounted easily and the electrodes can be provided at the tail part of the microphone body 2. Thus, the drop-in-charge system can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless microphone used, for example, for karaoke.

[0002]

2. Description of the Related Art In a vocal microphone used in karaoke, a main body of the microphone is formed in a hollow rod shape, and a microphone head formed of a mesh is attached to one end of the microphone by screwing. A microphone unit is provided inside the main body so that a part of the microphone unit protrudes from the end of the main body. When the microphone head is attached to the main body, the portion that protrudes from the main body of the microphone unit inside the attached microphone head. Will be covered. The microphone unit has a diaphragm
It is equipped with both an acoustic transducer for converting the vibration of the diaphragm into an audio current.

In this type of microphone, the one that has been widely used in the past has a cord that guides the audio current obtained by the microphone unit to the amplifier, and the cord is passed through a plug provided at the tip of this cord. It has a structure that connects to an amplifier.

In the case of using the cord as described above, the usable range of the microphone is determined by the length of the cord, so that there is a problem in terms of usability. A solution to this is a cordless wireless microphone. The basic type of this wireless microphone is a radio type that uses FM (frequency modulation) waves. The one using the FM wave has an advantage that it can be used without trouble even when the line of sight between the microphone and the receiver is not clear, but there is a fear of interference when a plurality of FM waves are used in the vicinity. Interference does not occur if the frequency is different, but since the width of the allocated frequency is narrow, interference may occur.

Therefore, instead of using radio waves, it is possible to adopt an optical communication system in which a light beam is modulated by a voice signal. The most common optical communication system uses infrared rays. When infrared rays are used, infrared rays do not diffuse like radio waves, so there is no fear of interference. However, on the contrary, it is necessary to correctly direct the light emitting diode on the transmitting side to the phototransistor on the light receiving side by not diffusing, and if this is not done, reception becomes impossible. For this purpose, a mirror or gyro mechanism is provided on the part of the microphone body opposite to the microphone head, that is, the tail part.The mirror or gyro mechanism changes the direction or angle of the body. However, there are some light emitting diodes that are oriented in a predetermined direction.

[0006]

Due to this structure, the restrictions on the positions of the transmitting side and the receiving side are slightly eased. Especially, the gyro mechanism is provided even if a singer singing a song in karaoke moves around pretendingly. Since the infrared rays from the light emitting diode always go to the receiver side, problems such as interference and poor signal transmission that the conventional one has can be solved, but the structure becomes complicated by using the gyro, There is also the problem of increased weight. The mirror type also has a problem that it is easily damaged.

On the other hand, in commercial karaoke, it is common to use a rechargeable battery in the microphone body. In this case, since it is preferable that the charging operation is simple, an electrode is provided at the lower end of the main body of the microphone, and after use of the microphone, the electrode of the charger installed upward so as to receive this electrode, It is convenient to use a so-called drop-in charger type that inserts from above. However, in this case, since it is necessary to provide an electrode at the lower end of the main body of the microphone, there is a problem that the above-mentioned gyro is not provided with a gyro and the drop-in charger type cannot be used.

The present invention has been made in view of this point, and it is an object of the present invention to provide an optical communication type wireless microphone which is simple in structure, has no weight increase, and can adopt a drop-in charger type. is there.

[0009]

According to a first aspect of the present invention, there is provided a wireless microphone including a light emitting diode which emits a light beam modulated by an audio signal, wherein a microphone head is connected to a microphone head. In the wireless microphone, an arm extending to an outer side portion is provided, and the light emitting diode is attached to a tip of the arm.

According to a second aspect of the present invention, in the first aspect of the present invention, an annular body is integrally provided on the base of the arm, and the annular body is sandwiched between the microphone body and the microphone head. It is a wireless microphone characterized by being installed by being installed.

Further, in the invention described in claim 3, in the invention described in claim 1, a projection or a groove is provided on the inner circumference of the annular body, while the projection is provided on the microphone body side. The wireless microphone is characterized in that a groove or a ridge that fits into the groove is formed and the ridge is fitted into the groove when the annular body is attached to the microphone body.

Furthermore, the invention described in claim 4 is
The wireless microphone according to claim 1, wherein two arms are provided at symmetrical positions with respect to a center position of the annular body, and a light emitting diode is attached to a tip of each of the two arms.

According to a fifth aspect of the present invention, in the first aspect, the arm is made of a flexible material, and the arm is formed integrally with the annular body or is integrally formed. It is a wireless microphone characterized by being combined.

[0014]

According to the invention described in claim 1, since the light emitting diode for emitting a light beam is provided outside the microphone head, it is obstructed by the user's hand or other objects in the signal transmission to the receiver. Signal transmission to the receiver is ensured.

According to the invention described in claim 2,
The ring-shaped body provided at the base of the arm can be easily attached to the microphone body, and after the attachment, the light emitting diode can be held at a fixed position.

Further, according to the invention described in claim 3, since the annular body and the microphone body side are positioned by the fitting of the recess and the protrusion, the manufacture is easy, and the light emission protruding from the microphone body. The position of the diode can be made uniform.

Further, according to the invention described in claim 4, two arms are provided at symmetrical positions with respect to the center position of the annular body, and the light emitting diode is attached to the tip of each of the two arms. Even if the microphone user violently moves or turns the microphone,
Light rays from either light emitting diode will be received by the receiver.

According to the invention described in claim 5, since the arm is made of a flexible material, even when the microphone user accidentally drops the microphone, Since the arm bends, it is possible to prevent the arm from being damaged.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The wireless microphone of the present invention also
The vibration of the diaphragm is converted into voice current by an acoustic converter,
The basic structure in which the audio signal is modulated and then applied to the lighting circuit of the infrared light emitting diode so that the light emitting diode emits light in response to the change in the audio signal is the same as the conventional one. It is characterized by the mounting structure of the light emitting diode.

The external appearance of the wireless microphone 1 includes a microphone body 1 made of a cylindrical body, a microphone head 3 made of a mesh body attached to the upper end of the microphone body 1 by screwing, a microphone body 2 and a microphone head 3. And an arm 5 protruding from the annular body 4. The annular body 4 and the arm 5 are made of synthetic resin,
A dark-colored cover 6 is provided at the tip of the arm 5, and a light-emitting diode is housed inside the cover 6. Inside the microphone head 3, a microphone unit 7 having both a diaphragm and an acoustic transducer for converting the vibration of the diaphragm into a sound current is housed.

As shown in FIG. 3, the upper part of the microphone body 2 is slightly reduced in diameter from the lower part thereof, and a male screw 9 is engraved at the end of the reduced diameter part 8 to form the lower end of the microphone head 3. It is adapted to be screwed with a female screw (not shown) engraved inside. The ring-shaped body 4 has substantially the same dimensions as the ring-shaped body conventionally provided for attaching a nameplate.

In this embodiment, the outer diameter of the ring-shaped body 4 is equal to or slightly larger than the outer diameter of the microphone body 2, and the width is determined by the male screw 9 of the reduced diameter portion 8 of the microphone body 2. It is equal to the part that is not engraved. As a result, when the microphone head 3 is attached to the microphone body 2 by screwing, the annular body 4 is first attached, and then the microphone head 3 is screwed, whereby the three members are integrated.

As shown in FIG. 3, the reduced diameter portion 8 of the microphone body 2 is provided with a recessed groove 10 in the longitudinal direction of the microphone body 2 from the end. On the other hand, the inner peripheral portion of the annular body 4 is provided with a ridge 11 which enters the groove 10. The concave groove 10 and the ridge 11 that enters the concave groove 10 may have an inverse relationship. The groove 10 may be a notch. By providing the groove 10 and the protrusion 11, the annular body 4
When the is mounted on the reduced diameter portion of the microphone body 2, the positioning can be performed by fitting them.

In the wireless microphone 1 having such a structure, when the annular body 4 is assembled to the microphone body 2,
The lead wire 12 from the light emitting diode is connected to a transmission circuit (not shown) in the microphone body 2. Lead wire 12
Are drawn out from the lower part of the protrusion 11 to the inside of the annular body 4. After connecting the lead wires 12, the microphone head 3 is attached by screwing.

When using the wireless microphone 1, the infrared rays emitted from the light emitting diode housed inside the cover 6 reach the receiver. Since the light emitting diode is projected from the microphone main body 2 by the arm 5, it is not necessary to pay any particular attention to it. However, when moving the light emitting diode due to pretension or the like, some attention should be paid to its direction. As shown by broken lines in FIGS. 1 and 2, the arm 5 is placed at a symmetrical position from the center position of the annular body 4.
If a cover 6 is provided at the tip of each of the two arms 5 and 5 and a light emitting diode is attached to the inside thereof, infrared rays go to the receiver from either one of the two arms. When you move to, the infrared light does not reach the receiver.

In the above embodiment, the annular body 4 and the arm 5 are made of synthetic resin and described as having a certain degree of hardness, but the present invention is not limited to this, and at least the arm 5 portion. It is also possible to use a flexible material so that when the microphone is dropped, the portion of the arm 5 bends to avoid damage. As the material in this case, a rubber material having an appropriate hardness, a soft rubber or a synthetic resin having a wire inserted therein, and a flexible tube having a metal band spirally wound can be considered.

When the ring-shaped body 4 is assembled to the microphone body 2, the lead wire 12 from the light emitting diode, which is drawn from the lower part of the ridge 11 to the inside of the ring-shaped body 4, is connected to the transmission circuit in the microphone body 2. However, this is an example, and the connection may be made by another method. As another method, if a part of the printed circuit board is projected from the microphone body 2 side and a socket portion for receiving this is formed on the annular body 4 side, and the annular body 4 is attached to the microphone body 2, it is possible to simultaneously generate electricity. It is possible to think of a structure or the like that enables specific connections.

As shown in FIG. 4, a connector 13 may be attached to the end of the lead wire 12, and the connector 13 may be connected to a connector (not shown) provided on the microphone body 2 side.

In the above embodiments, the infrared method which is most commonly used as the optical communication method has been described. However, the present invention may be any optical communication method and is not influenced by the wavelength of light. Therefore, it can be applied to a wireless microphone using a light wave having a wavelength exceeding the infrared region.

[0030]

Since the present invention is the wireless microphone configured as described above, the light emitting diode which emits a light beam can be attached to a position where it is not easily affected by other objects. Further, in addition to being easy to install, when the light emitting diode or the supporting structure portion thereof is broken or damaged, only this portion can be easily replaced and dealt with. Since an electrode can be provided on the tail portion of the microphone body, a so-called drop-in charger type can be provided, and usability is remarkably improved as a commercial microphone. Since the arm projects from the microphone body, it is possible to prevent the wireless microphone from rolling when placed on a desk or the like. And with a flexible arm,
The arm can be prevented from being damaged even if it is dropped accidentally.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 seen from above.

FIG. 3 is a perspective view showing the thing of FIG. 1 in an exploded state.

FIG. 4 is a perspective view showing a case where a connector is attached to a lead wire.

[Explanation of symbols]

 1 Wireless Microphone 2 Microphone Main Body 3 Microphone Head 4 Annular Body 5 Arm 6 Cover 8 Reduced Diameter Section 10 Recessed Groove 11 Protrusion

Claims (5)

[Claims] 1. A wireless microphone comprising a light emitting diode for emitting a light beam modulated with an audio signal, comprising:
An arm extending from the joint between the microphone body and the microphone head to the outside of the microphone head is provided,
A wireless microphone in which the light emitting diode is attached to a tip of the arm. 2. The wireless microphone according to claim 1, wherein an annular body is integrally provided on a base portion of the arm, and the annular body is attached so as to be sandwiched by a connecting portion between the microphone body and the microphone head. 3. A ring-shaped body is provided with a ridge or a groove on the inner periphery thereof, while a groove or a groove for receiving the ridge is formed on the microphone body side to form the ring-shaped body into the microphone body. The wireless microphone according to claim 1, wherein the protrusion is fitted into the groove when the microphone is attached to the wireless microphone. 4. The wireless microphone according to claim 1, wherein two arms are provided symmetrically with respect to a center position of the annular body, and a light emitting diode is attached to each tip of the two arms. 5. The arm is made of a flexible material,
The wireless microphone according to claim 1, wherein the arm is integrally formed with or integrally connected to an annular body.