JPH073753Y2 - Microphone with windscreen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a microphone with a windscreen mainly used in a handy type video camera.

<Prior Art> Recently, a stereo microphone is often used in a handy type video camera. FIG. 3 is a perspective view showing a conventional microphone of this type with a part thereof cut away.

The front part of the microphone body 41 is a microphone housing 42 that houses a microphone unit. Microphone housing
42 has a cylindrical shape provided with a large number of slits 43,
The cross-sectional shape is often a horizontally long elliptical shape or a flattened shape in order to recognize that it is stereo. The microphone housing 42 is covered with a windscreen 44 made of urethane foam. The wind screen 44 has a cylindrical shape with a bottom, and is fitted into the microphone housing 42 from its tip.

The rear part of the microphone body 41 is a case 45 that accommodates a printed circuit board and the like. A shoe adapter 47 is attached to the front bottom surface of the case 45 via a rubber damper 46. The shoe adapter 47 is fitted into, for example, an accessory shoe 52 attached to a handle 51 of the camera body 50, and is tightened by a nut ring 48.

<Problems to be Solved by the Invention> The conventional microphone with a windscreen described above has a microphone housing 42 in order to recognize that it is stereo.
Is flattened up and down, but the flatness is almost lost when the windscreen 44 is covered on the microphone housing 42. This is because the cylindrical part of the windscreen 44 is flattened following the flat microphone housing 42, but the bottom facing the front remains circular due to its rigidity, and the most prominent part of the microphone is not flattened. Of. Therefore, even though the microphone housing 42 is intentionally flattened, the intention is hardly transmitted to the user or the like.

If the entire windscreen is molded flat, the tip of the microphone is also flattened. However, such a windscreen has a high manufacturing cost and is not realistic as compared with a cylindrical windscreen. Also, even if you use such a windscreen,
There is no such visual accent on the front of the windscreen made of urethane foam, and it is difficult to add a visual accent, so the flatness you expect cannot be obtained.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a microphone with a windscreen that is low in cost and can sufficiently recognize that the portion of the microphone housing is flat.

<Means for Solving the Problems> The microphone with a windscreen according to the present invention is
It has a flat tubular shape in the front of the microphone body, and consists of a microphone housing with a cover attached to its front surface, and a cylindrical urethane foam with both ends open. And a windscreen fitted externally to be exposed.

<Operation> Since the windscreen in the microphone with the windscreen has a cylindrical shape with both ends open, the manufacturing cost is low, and when the microphone is fitted onto the microphone housing, the entire structure becomes flat following the microphone housing.
In addition, the tip of the microphone housing is exposed from the wind screen, and the flat shape of the tip of the microphone appears as it is at the tip of the microphone, and the flatness can be emphasized by the design of the cover attached to the tip of the microphone housing. Therefore, even if the microphone housing is covered with the windscreen, anyone can easily recognize that the microphone housing is flat.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. First
1 is an exploded perspective view of a microphone with a wind screen according to an embodiment of the present invention, and FIG. 2 is a perspective view of the assembled state.

The microphone body 10 has a microphone housing 11 in the front part. The microphone housing 11 is made of resin and has a tubular shape with an elliptical cross section. The front end of the microphone housing 11 is a flange portion 111, and a large number of arc-shaped slits 112 are formed at predetermined intervals in the portion from the flange portion 111 to the base end portion. The base end portion of the microphone housing 11 is a holding portion 113 whose outer diameter gradually decreases toward the base end. The outer diameter of the tip of the holding portion 113 is larger than that of the front portion of the holding portion 113, and a groove 114 is provided at the base of the holding portion 113 over the entire circumference.

The microphone housing 11 includes a pair of microphone units 12, 12
Is housed. The pair of microphone units 12, 12 are mounted on the printed circuit board 13 in different directions. Gutter-shaped shield case 14,14 that covers the microphone unit 12,12
Is made of punched metal and is attached to the printed circuit board 13 together with the microphone units 12 and 12. Printed board
The front and rear of 13 is supported by disk-shaped dampers 15, 15. The dampers 15, 15 are made of rubber and have arcuate slits for facilitating the deformation, and are held in the microphone housing 11 by fitting the upper and lower protrusions 151, 151 into the elongated holes 115, 115 of the microphone housing 11.

A cover 16 is fitted in the front end opening of the microphone housing 11. The cover 16 has a horizontally long elliptical shape, slightly bulges on the front side, and has a plurality of vertical slits 161. The plurality of vertical slits 161 are shorter toward the side in order to emphasize the horizontal spread, and “R” mark and “L” mark for displaying P channel and L channel are provided on both sides thereof. ing.

A windscreen 17 made of urethane foam is externally fitted to a portion of the microphone housing 11 where the slit 112 is sandwiched between the flange portion 111 and the holding portion 113. The wind screen 17 has a cylindrical shape with both ends open, and becomes a substantially perfect circle when it is not externally fitted to the microphone housing 11, and when it is externally fitted to the microphone housing 11, a slight tension is applied in the circumferential direction to the microphone. It has an elliptical shape along the outer peripheral surface of the housing 11.

The rear part of the microphone body 10 is a case 18 that accommodates a printed circuit board and the like. Case 18 has a circular mouth on the front
The microphone housing 11 is held by having the opening 181 and having the opening 181 fitted in the concave groove 114 formed in the holding portion 113 of the microphone housing 11. A rubber connector 20 is attached to the lower surface of the case 18. The connector 20 is L-shaped, and a flange 22 provided on the upper end of the rising portion 21 is joined and fixed to the lower front wall of the case 18. A horizontal portion 23 of the connector 20 parallel to the case 18 is reinforced by a built-in metal plate, and its rear end reaches almost the rear end of the case 18. A shoe adapter 30 into which a nut ring 31 is screwed is attached to the lower surface of the rear end of the horizontal portion 23 with a screw 32.

In the microphone with a windscreen having the above structure, the microphone housing 11 has a horizontally long elliptical cross section. The windscreen 17 is open at both ends and the microphone housing 11
It is externally fitted between the flange portion 111 and the holding portion 113.
Therefore, although the wind screen 17 is formed in a cylindrical shape, when it is externally fitted to the microphone housing 11, the wind screen 17 has an elliptical shape that follows the outer peripheral surface shape of the microphone housing 11 over the entire length. Also, microphone housing 11
Since the tip of is exposed from the windscreen 17,
It is directly recognized that the microphone housing 11 is elliptical at the most prominent tip of the microphone. Further, the cover 16 fitted at the tip of the microphone housing 11
Protects the inside of the microphone housing 11 as well as
The vertical slit 161 emphasizes the lateral spread and also displays the "R" mark and the "L" mark. Therefore,
Even if the microphone housing 11 is covered with the wind screen 17, it is easily recognized by anyone that the microphone is a stereo microphone.

Further, the microphone with a wind screen is provided with a rubber connecting tool 20 extending rearward from the lower surface of the front part of the case 18, and the shoe adapter 30 is provided on the lower surface of the rear end part of the connecting tool 20. It is installed. Therefore, it is possible to prevent the microphone body 10 from projecting rearward of the shoe adapter 30, and even when the accessory shoe is at the front of the handle of the camera body, the microphone body 10 does not get in the way and the handle can be easily grasped. Moreover, the microphone body 10
The front part of the case 18 close to its center of gravity is supported by the connecting tool 20 and has good stability. Further, the bending of the connector 20 due to the support of the microphone body 10 is prevented by the built-in metal plate. Further, the rising portion 21 of the connector 20 without a metal plate functions as a damper to effectively protect the microphone body 10 from vibration and impact.

Although the microphone housing 11 has an elliptical cross section in the above embodiment, it may have a horizontally long rectangular shape. Further, the cover 16 can be variously changed in its design. Further, the shoe adapter 30 can be attached to the lower surface of the case 18 via a rubber damper.

<Effect of device> The microphone with windscreen according to the present invention is
Despite the fact that the microphone housing is covered by the cylindrical windscreen, the flatness of the microphone housing is clearly recognized, which contributes to the improvement of its commercial value. In addition, since the cylindrical windscreen has both ends open, the manufacturing cost is lower and the economy is superior to the flat windscreen as well as the bottomed cylindrical windscreen.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a microphone with a windscreen showing an embodiment of the present invention, FIG. 2 is a perspective view of an assembled state, and FIG. 3 is a side view of a conventional microphone with a windscreen. 10 …… Microphone body 11 …… Microphone housing 16 …… Cover 17 …… Wind screen

Claims (1)

[Scope of utility model registration request] 1. A microphone housing having a flat tubular shape at a front portion of a microphone body, a cover mounted on a front surface of the microphone housing, and a cylindrical urethane foam having both ends open. A microphone with a windscreen, comprising: a windscreen that is externally fitted so that the front cover is exposed.