JPH0113495Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a horn speaker, and particularly to a snow cover thereof.

[Conventional technology]

Conventional horn speakers have the disadvantage that when used in snowy areas, the sound pressure decreases due to the accumulation of snow inside the outer cylinder of the horn speaker. Particularly in horn speakers used in emergency vehicles, safety is compromised due to the above-mentioned drawbacks.

[Purpose of invention]

An object of the present invention is to provide a horn speaker having a detachable snow cover.

Another object of the present invention is to reduce the amount of snow that falls into the outer cylinder of a horn speaker by attaching a snow cover to the horn speaker.

Still another object of the present invention is to prevent the sound pressure of the horn speaker from decreasing due to snow by using the snow cover, thereby preventing functional deterioration and ensuring safety when used in an emergency vehicle.

Still another purpose of the present invention is to make it easier to remove snow that has fallen into the outer cylinder by configuring the snow cover to be detachable from the horn speaker, and to make it easier to remove snow that has fallen into the outer cylinder, and to use the same method as before in seasons and places with little or no snowfall. It is possible to use a horn speaker in the form of a.

[Structure of the idea]

In order to achieve the above object, the present invention is characterized in that a snow cover having a plurality of louvers inside is configured to be detachably attached to the front surface of the horn speaker.

〔Example〕

The present invention will be described below with reference to the embodiments shown in the drawings. Fig. 1 shows an embodiment in which the present invention is applied to a horn speaker, and the drive section is well known and has particular relevance to the present invention. Since this is not the case, illustration is omitted. In the figure, 1 is a horn speaker excluding a driving part, and 2 is a snow cover. The horn speaker 1 consists of a throat portion 3, an inner tube 4, a middle tube 5, and an outer tube 6.

The snow cover 2 has a plurality of louvers 7 inside the upper and lower walls.For example, the front surface thereof is formed so that the depth becomes shorter as it goes from the top to the bottom. It is designed to be removably attached using claws 8 and 9.

As shown in Fig. 2, the inclination angle α of the front surface of the snow cover 2 can be made large in the case of fixed outdoor installation, and the depth dimension L
can also be shortened. However, for in-vehicle use, it is better to make α small and L long as shown in FIG. However, if weight issues, cost issues, susceptibility to wind pressure, etc. have to be considered, it is better to make the front surface shape a quadratic curve as shown in FIG.

In order to make the entire structure more compact, the louver 7 and the upper and lower wall surfaces may be angled downward so that the tip of the cover is lowered, as shown in FIG.

The snow cover can be made of resin, sheet metal, or rubber; if sheet metal is used, the degree of icing can be reduced by applying a resin coating to the surface, and if rubber is used, a heater can be placed inside it. It is also possible to bury ice to melt ice.

If snow accumulates between the louvers, you can remove the cover and apply an impact to knock the snow off, or you can easily brush it off with a stick.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the amount of snow falling into the outer cylinder of the horn speaker is reduced, thereby preventing a drop in sound pressure and improving safety when used in emergency vehicles. Effective in securing.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing one embodiment of the present invention;
FIG. 3, and FIG. 4 are schematic diagrams each showing an example of the structure of a snow cover. 1...Horn speaker, 2...Snow cover, 7
……louver.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A horn speaker characterized in that a snow cover having a plurality of louvers inside is configured to be detachably attached to the front of the horn speaker. (2) The horn speaker according to claim 1, wherein the front surface of the snow cover has a shape in which the depth decreases from the top to the bottom. (3) The horn speaker according to claim 1 of the utility model registration claim, characterized in that the louvers of the snow cover and the upper and lower wall surfaces are formed downward.