JPH0666142U - wireless microphone - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a wireless microphone in which the area of a signal processing circuit board on which circuit components are to be mounted is reduced to achieve miniaturization. [Structure] The signal processing circuit board 6 is bent in a direction orthogonal to the longitudinal direction of the elongated support 1 to form four bent portions 6A,
6B, 6C and 6D are provided, and each bent portion is an elongated support 1
Fix so as to cover each side of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wireless microphone, and particularly to improvement of a signal processing circuit board thereof.

[0002]

[Prior art]

 In a generally known wireless microphone, as shown in FIG. 3, a sound receiving section 2 is attached to one end of an insulating hollow elongated support 1 such as resin, and an antenna is attached to the other end. It has a structure in which 3 is attached. Further, a signal processing circuit board 6 for amplifying, modulating, etc., a sound signal input from the sound receiving section 2 is fixed to the elongated support 1, and a large number of circuit components 7 are attached to the circuit board 6. Has been implemented. The antenna 3 is attached using, for example, a spirally wound wire, and the antenna 3 is covered with an antenna cover 4. Further, the battery 8 is inserted into the hollow portion of the support 1. The entire support 1 including the antenna cover 4 is covered by the outer case 5.

In the wireless microphone having such a structure, the output signal from the circuit board 6 is supplied to the antenna 3. However, in order to downsize the wireless microphone, it is necessary to reduce the area of the circuit board 6. . As a material for the circuit board 6, a hard material such as bakelite or epoxy glass is used.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional wireless microphone, since it is difficult to reduce the area of the circuit board 6, there is a problem that it is impossible to reduce the size. That is, although the circuit components 7 required for various signal processing of the input signal are mounted on the circuit board 6, the number of the circuit components 7 cannot be reduced to a certain number or less, and thus the circuit There are restrictions on reducing the area of the substrate 6.

The present invention has been made in consideration of the above problems, and an object thereof is to provide a wireless microphone in which a circuit board is improved to enable downsizing.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a sound-receiving portion attached to one end of an insulating elongated support body to which a signal processing circuit board is fixed, and an antenna attached to the other end. In the wireless microphone, the signal processing circuit board is bent in a direction orthogonal to the length direction of the elongated support, and each bent portion is integrally formed so as to cover each side surface of the elongated support. It is characterized in that it is composed of an integrated substrate.

[0007]

[Action]

 The signal processing circuit board was bent in the direction perpendicular to the length direction of the elongated support, and each bent part was fixed so as to cover each side surface of the elongated support. Since it can be distributed to each bent portion, miniaturization can be achieved.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an assembly view showing an embodiment of a wireless microphone of the present invention, in which an elongated support 1 having a sound receiving part 2 at one end and an antenna 3 at the other end is attached to each of the supports 1. The signal processing circuit board 6 is fixed so as to cover the side surface. Protrusions 9 are provided in advance at predetermined positions on each side surface of the support 1, and on the other hand, guide holes 10 corresponding to the respective protrusions 9 are also provided at predetermined positions on the circuit board 6, so that the protrusions 9 and the guide holes 10 are provided. The circuit board 6 is fixed to the support body 1 by positioning.

The circuit board 6 is made of a flexible material, and after the circuit component 7 is mounted at a predetermined position in a pre-integrated state as shown in FIG. 2, the support 1 is made of, for example, a square pole. Then, in order to correspond to the four side surfaces, it is bent from the position of the broken line 11 into four parts 6A, 6B, 6C and 6D, and the respective bent parts 6A, 6B, 6C and 6D are shown in FIG. It is fixed by positioning it close to each corresponding side.

After a part of the antenna 3 is soldered to the circuit board 6, the antenna 3 is covered with the antenna cover 4, and then the whole of the outer case 5 is covered. Reference numeral 12 is a switch for turning on / off the wireless microphone, which is electrically connected to the sound receiving unit 2.

According to this embodiment, after the signal processing circuit board 6 is integrally formed of a flexible material and the circuit component 7 is mounted, the signal processing circuit board 6 is orthogonal to the longitudinal direction of the elongated support 1. It is bent in the direction of 6A, 6B, 6C, 6D and the bent portions are provided at the four portions, and each bent portion is positioned and fixed to each side surface of the corresponding support 1. A large number of circuit components 7 to be mounted on the substrate 6 can be distributed and mounted on four parts. Therefore, the area of the circuit board 6 along the length direction of the support 1 can be reduced, and the wireless microphone can be downsized.

In the case of the present embodiment, the battery 8 can be inserted into the hollow portion of the support 1 from the direction of the antenna 3, so that there is no problem. In the embodiment, the example in which the support 1 having a specific shape is used has been described. However, the shape is not limited to this, and any shape may be used, and the circuit board 6 may be bent according to the shape. Good.

[0013]

[Effect of device]

 As described above, according to the present invention, the signal processing circuit board is bent in a direction orthogonal to the length direction of the elongated support, and each bent portion covers each side surface of the elongated support. Since the components are fixed as described above, the circuit components can be dispersed in the respective bent portions, so that the area along the length direction of the circuit board becomes small, and the wireless microphone can be miniaturized.

[Brief description of drawings]

FIG. 1 is an assembly view showing an embodiment of a wireless microphone of the present invention.

FIG. 2 is a perspective view showing a signal processing circuit board used in this embodiment.

FIG. 3 is a perspective view showing a method of fixing a signal processing circuit board to an elongated support in this embodiment.

FIG. 4 is an assembly diagram showing a conventional example.

[Explanation of symbols]

 1 elongated support 6 circuit board 6A, 6B, 6C, 6D bent portion 7 circuit component 8 battery

Claims (1)

[Scope of utility model registration request] 1. A wireless microphone in which a sound receiving portion is attached to one end of an insulating elongated support to which a signal processing circuit board is fixed, and an antenna is attached to the other end thereof. The circuit board for bending is formed of a substrate that is bent in a direction orthogonal to the length direction of the elongated support, and each bent portion is integrated so as to cover each side surface of the elongated support. A characteristic wireless microphone.