JPH1011679A - Rain-proof type alarm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rain-proof type alarm of which configuration is simplified and rain-proof function is more improved while keeping functions required as an alarm. SOLUTION: Band-shaped holes 8 and screw holes 9 are provided on the same circumference surrounding an LED 7 projected on a cover plate 1, and a groove part 10 is formed along a centrifugal circle inside these holes. Besides, an almost cylindrical rain-proof ring 11 having the outer peripheral side face of narrow edge part to be fastened and fitted with the inner peripheral side face of groove part is provided at a top end section, and a glove 2 is fitted while covering this ring. Thus, a water channel X is formed on the inner surface side of fitting section of the glove 2 from a cylindrical part 11a and a flange part 11b of the rain-proof ring 11 so that infiltrated water can flow through this water channel X.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rain-proof alarm device installed in a store, a factory, a home, or the like.

[0002]

2. Description of the Related Art Generally, in stores, factories, homes, and the like, an alarm device is installed in preparation for a disaster. Since this alarm device may be installed not only indoors but also outdoors, a rain-proof type alarm device provided with a rain-proof film for preventing ingress of moisture such as rain and snow has been proposed (actual opening). 1962-14
No. 9882).

[0003] Such a conventional rainproof type alarm device will be described below with reference to the drawings. FIG. 11 is a schematic perspective view showing a conventional rainproof alarm device. In the figure, 5
Reference numeral 0 denotes a cover plate, and screw holes 50a, 50a for screwing a base 52 serving as a base of the glove 51 at a position above the apparatus main body, and for projecting a luminous body (not shown) such as a lamp. A hole 50b is provided. Further, openings 50c formed of through holes arranged in a lattice are provided at positions below these holes,
Further below, a start switch 54 is mounted together with a start switch frame 53.

[0004] The globe 51 is a semi-elliptical member having an internal cavity that covers the light emitting body, and has a screw portion 51 c at a portion attached to the base 52. The base 52 has a screw portion 51 on the inner side surface.
c is a disk-shaped member having a female screw portion 52c that engages with the screw holes 50a,
2a and a hole 52b that overlaps with the hole 50b are provided.

[0005] Reference numeral 55 denotes a main body case, in which a circuit board for an alarm device, the luminous body, and the like are provided (not shown). A speaker 57 is housed in a housing portion 56 in the main body case 55, and a rainproof film 58 is attached to a sound-generating portion of the speaker 57. The rainproof film 58 is attached so as to be sandwiched between the speaker 57 and the acoustic opening 59. Here, the acoustic opening portion 59 is a disk-shaped member having a certain thickness for forming a resonance portion between the acoustic opening portion 59 and the rainproof film 58, and has a plurality of acoustic holes on its surface. Reference numeral 60 denotes a pressing ring for fixing the rainproof film 58 protruding from the edge of the storage section 56.

[0006]

In the above-mentioned conventional rain-proof type alarm device, in order to attach the globe 51 to the cover plate 50, a base having a female screw portion 52c engaged with a screw portion 51c of the glove 51 is provided. 52
Is used. This is to make the globe 51 detachable and to easily replace the bulb when the bulb is damaged when a normal bulb such as a lamp is used as the luminous body.

However, in recent years, an LED (light emitting diode) has been often used as the light emitting body. For this reason, the luminous body is hardly damaged in a normal use mode, and after the rainproof alarm device is attached, the glove is hardly actually attached / detached even if the glove is detachable. Therefore, the screw portion, the base, and the like have substantially lost their existence significance, and instead have a problem that the configuration of the rain-proof alarm device is complicated, the manufacturing process is complicated, and the manufacturing cost is increased. I was

Further, if the glove can be easily attached and detached from the outside, the glove alone may be removed due to mischief. In such a case, the function of emitting light to the surroundings is impaired by the luminous body and the glove, and the luminous body is exposed to the outside, so that the luminous body and its mounting portion, and even the element in the alarm device, are damaged. There was a problem that fear was increased.

On the other hand, if moisture such as rain and snow enters the glove, the luminous body, the circuit board, and the like are splashed with water, and these parts may be damaged. Need to be prevented. In the above-mentioned rain-proof type alarm device, no special rain-proof means is provided in the glove mounting portion, and the members are brought into close contact with each other to prevent intrusion of rain and snow. As another means, there is a method in which an annular rubber packing is interposed as rainproof means between the glove and the base or between the base and the cover plate.

However, in the case of close contact between members, moisture penetrates due to capillary action at the close contact portion, so that the rainproof function cannot be perfected.
Further, when rubber packing is used as rainproof means, the rubber packing is eroded by moisture such as rain and snow,
There is a risk of deterioration due to the pressure held between the members. For this reason, for example, in a severe use mode in which the apparatus is installed outdoors and exposed to bad weather for a long time, water may enter the inside of the rain-proof type alarm device from the glove mounting portion.

Also, the mechanism for generating an alarm sound is constituted by the combination of independent members such as a speaker, a rain-proof film, a sound-generating opening, and a holding ring. Was a factor complicating the process.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made to simplify the configuration of an alarm device and secure a more fulfilling rain protection function while retaining the functions required as an alarm device. It is an object of the present invention to provide a rain-proof type alarm device capable of performing the following.

[0013]

According to the first aspect of the present invention,
An alarm device that has a speaker that emits an alarm sound and a circuit that drives the speaker inside the main body case and emits an alarm by operating a start switch, surrounds the light emitter provided on the front surface and the light emitter in plan view. A cover plate attached to the front surface of the main body case, a cylindrical member having a tip portion fitted with the groove portion, and an outer peripheral side surface of the tip portion and the groove portion; It has a cylindrical member fitted in the groove portion with an inner peripheral side fitted and fitted, and a glove attached to the front surface of the cover plate and covering the light emitting body and the cylindrical member. And

According to a second aspect of the present invention, in the rainproof alarm device according to the first aspect, an outer peripheral side surface of the cylindrical member is inclined in an inner diameter direction up to just before the tip portion.

According to a third aspect of the present invention, in the rainproof alarm device according to the first or second aspect, the cylindrical member is provided with a flange having a diameter larger than that of the cylindrical portion at a base end thereof. It is characterized by.

According to a fourth aspect of the present invention, in the rainproof alarm device according to any one of the first to third aspects, the cover plate has a predetermined shape formed on a circumference surrounding the luminous body. A cover plate in which the groove is formed along a concentric circle on the inner side of the circumference, and the glove is provided with an attachment hole at an edge on the attachment side to the cover plate. A claw protruded according to the shape of the screw hole, and a concave portion that overlaps with the screw hole, the claw portion is fitted into the mounting hole, and a screw is inserted into the screw hole and the concave portion that are overlapped. Is a glove attached to the cover plate by passing through the cover plate.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

<1. Appearance Configuration> An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an external configuration of a rainproof alarm device according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a cover plate, and a glove 2 is attached to a position above the apparatus main body. The cover plate 1 includes a main body case 3
A hole having a predetermined shape and size is provided at a predetermined position so that the start switch 4, the recovery switch 5, and the acoustic hole seal 6 provided on the main body case 3 when the main body case 3 is fitted.

The globe 2 is a semi-elliptical spherical member having an internal cavity, and an edge 2 a corresponding to the cut surface of the ellipsoid is attached to the cover plate 1. Although not appearing in appearance, a rainproof ring is provided inside the glove 2 to prevent ingress of moisture such as rain and snow. The inner shape of the glove 2, the shape of the rainproof ring, its installation mode, and the like will be described later.

The main body case 3 is a case in which various members for generating an alarm sound and the like are housed. The activation switch 4 is a switch for operating the alarm ON / OFF. Once pressed, the activation switch 4 keeps the ON state until the recovery switch 5 is pressed, and the alarm continues to be issued. The sound hole seal 6 is a seal attached to a surface of a mechanism (hereinafter, referred to as an “alarm sound generation unit”) that emits an alarm sound, and is provided with a plurality of sound holes 6 a and a display portion for a battery test. 6
b. The details of the alarm sound generation unit will be described later.

<2. Attaching Structure of Globe 2 to Cover Plate 1> Next, an attaching structure of the glove 2 to the cover plate 1 will be described. FIG. 2 is a perspective view showing the cover plate 1 removed from the main body case 3, and shows a state where the glove 2 is removed from the cover plate 1. FIG. 3 is a plan view when only the cover plate 1 is viewed from above.

In FIG. 2, reference numeral 7 denotes an LED protruding from the center of the glove mounting position of the cover plate 1 and having a terminal connected to a power supply terminal provided on the main body case 3 on the back side of the cover plate 1. ing.

Reference numeral 8 denotes a band-like hole having a wide portion (wide portion 8a) and a narrow portion (narrow portion 8b), which are provided at equal intervals at four places on the same circumference surrounding the LED 7, and have a longitudinal direction. Are curved along the circumference (see FIG. 3). Here, the circumference where these band-shaped holes 8 are located corresponds to the size of the edge 2 a which is a mounting portion in the glove 2. Screw holes 9 are provided between the belt-like holes 8 on the circumference.

Reference numeral 10 denotes a belt-shaped hole 8 whose diameter is smaller than the circumference.
And a groove formed along the circumference inside the screw hole 9. The width w and the depth d of the groove 10 are the same as those of the rainproof ring 1.
1 has a predetermined size to fit with the lower edge portion (see FIG. 2).

The rainproof ring 11 is a substantially cylindrical member composed of a cylindrical portion 11a extending in the vertical direction in FIG. 2 and an annular flange 11b formed on the upper edge toward the outside. FIGS. 4 (a) and 4 (b) show a vertical sectional view and a plan view of the rainproof ring 11 as viewed from below. FIG.
As shown in (a), the thickness of the cylindrical portion 11a is
The outer peripheral side surface Sa of the cylindrical portion is slightly inclined and gradually thinned to the position 1c. This inclination is provided as needed, and may be generally flat. The lower edge portion below the step-like portion 11c is further extended by a constant length h with a smaller constant thickness v to form a narrow edge portion 11d.

Here, the thickness v is slightly smaller than the width w, the length h is substantially equal to the depth d, and the outer diameter of the narrow edge 11d is equal to the inner diameter of the groove 10. ing. Thereby, the inner peripheral side surface of the groove 10 and the narrow edge 1
The outer peripheral side surface of 1d is tightly fitted with the outer peripheral side surface and closely adhered to the groove portion 1d.
0 and the inner side surface of the narrow edge portion 11d are loosely fitted.

On the other hand, the edge 2a of the glove 2 in FIG.
Four claw portions 12 having an L-shaped cross section corresponding to the band holes 8 are provided. The cross section of the glove 2 is as shown in FIG. 5, and a semi-elliptical shape is formed by an inclined inner surface formed in a stepwise shape from the edge 2a toward the tip 2b. Here, the length (step) of each step of the stepped inner surface decreases toward the tip 2b, and the length from the lower end surface of the edge 2a to the first step 2c is the longest and the rainproof ring is the longest. 11 is slightly longer than the length from the step portion 11c to the upper surface of the flange portion 11b. 2d is a concave portion formed on the inner surface side of the edge portion 2a, and is located at a place where it overlaps with the screw hole 9 when the globe 2 is attached to the cover plate 1.

The mounting portion of the glove 2 described above has a shape in which the narrow edge portion 11d is fitted to the groove portion 10, the rainproof ring 11 is inserted into the cover plate 1, and the glove 2 is covered thereon. . Here, the glove 2 is attached to the cover plate 1 by inserting each claw 12 into the narrow portion 8b by inserting each claw 12 into the wide portion 8a of the band-shaped hole 8 and then rotating the glove a small amount. . After the glove 2 is attached by the strip holes 8 and the claw portions 12 in this manner, the cover plate 1
The globe 2 is fixed by press-fitting a screw into the screw hole 2d and the screw hole 9 that are superimposed from the back side of the glove.

As described above, the glove 2 is connected to the rainproof ring 11.
FIG. 6 shows a state in which the cover plate 1 is attached to the cover plate 1. This figure is a cross-sectional view of the center of the attachment part of the glove 2. As shown, a cylindrical portion 1 having an L-shaped cross section
A water channel X is formed on the inner surface side of the mounting portion of the globe 2 by the la and the collar portion 11b.

Here, the portion indicated by the symbol B in FIG. 6, that is, the portion where the narrow edge 11d and the groove 10 are fitted to each other is enlarged as shown in FIG. In this figure, the vertical direction is the vertical direction when the rain-proof type alarm device is actually installed. As shown in the drawing, the inner peripheral side surface S1 of the groove portion 10 and the outer peripheral side surface S2 of the narrow edge portion 11d are tightly fitted to each other, and the rainproof ring 11 is in close contact with the elastic deformation thereof,
Since the outer peripheral side surface Sa of the cylindrical portion is slightly inclined to the position of the stepped portion 11c, water such as rain and snow that has entered the glove 2 from the slight gap between the cover plate 1 and the globe 2 is shown in FIG. The water is collected and flows on the cover plate side of the water channel X indicated by the symbol W. That is, the water that has entered the glove 2 flows along the surface of the cover plate 1,
The kinetic energy directed toward the inside of the rain-proof ring 11 is lost upon hitting the outer peripheral side surface Sa of the cylindrical portion, and the water gradually flows down through the water channel X.

<3. Internal configuration of main body case 3>
The configuration inside the main body case 3 will be described. FIG. 8 is a view showing the front surface of the main body case 3 when the cover plate 1 is removed. Although omitted here, the main body case 3
Is provided with a circuit board for issuing an alarm in response to the operation of the start switch 4 and the recovery switch 5.

In the figure, 13 is a terminal connected to an external AC power supply. Reference numeral 14 denotes a rechargeable storage battery used as a standby power supply, which is charged by electric power supplied via a terminal 13. A fuse 15 is composed of a fuse carrier holding a glass tube fuse and a fuse base receiving the fuse carrier. The fuse 15 is provided at a predetermined position on the circuit board corresponding to each of the AC power supply connected to the terminals 13 and 13 and the backup power supply of the storage battery 14.

Reference numeral 16 denotes an L to which the terminal of the LED 7 is connected.
ED power supply terminal. Reference numeral 17 denotes a spare glass tube fuse, which is fitted in the main body case 3. Reference numeral 18 denotes an alarm signal input / output terminal.

Here, the configuration of the alarm sound generating section provided in the main body case 3 will be described in detail. The alarm sound generating unit is configured by a speaker, a rainproof film, and the like on the back surface of the speaker mounting unit 19 as shown in FIG. FIG. 9 is a perspective view illustrating the configuration of the alarm sound generation unit with the front surface of the main body case 3 illustrated in FIG. 8 as a bottom surface.

In FIG. 9, reference numeral 20 denotes a speaker housing provided on the back surface of the speaker mounting portion 19 of the main body case 3. The speaker housing portion 20 has an annular outer frame 20a that matches the size of the sounding portion outer edge 21a of the speaker 21, and a packing support portion 20b that supports the speaker packing 22 inside the outer frame 20a. The rain film 23 is stored so as to be sandwiched between the speaker packing 22 and the speaker 21. Here, the speaker packing 22 is an annular packing for receiving the outer edge 21a of the speaker 21 of the speaker 21, and the rainproof film 23 is a rainproof film made of a thin film.

Reference numerals 20c and 20c denote speaker holders extending from the outer frame 20a.
a has a convex portion to be fitted. Further, the outer frame 20a
A screw receiving hole 20d is provided on the outer side surface of the
The screw 24 is configured to hold down the sounding portion outer edge 21a of the speaker 21 housed in the outer frame 20a.

Reference numeral 25 denotes a lattice-like opening formed by a plurality of strips having an L-shaped cross section, which are provided at a fixed distance from the packing support portion 20b, and are provided on the bottom surface (the front surface of the main body case 3). The sound hole seal 6 is attached. As a result, a resonance section is formed in front of the sound generation section of the speaker 21 and the rainproof film 23. Also, this lattice-shaped opening 25
Has a function of reinforcing the sound hole 6a of the sound hole seal 6 and of protecting the rainproof film 23 by making the object hard to invade from the outside by making the cross section L-shaped.

<4. Overall Configuration> FIG. 10 is a cross-sectional view of the central portion of the entire rainproof alarm device described above. As shown,
The cover plate 1 and the globe 2 are integrated, and the configuration of the glove mounting portion is greatly simplified. Then, inside the globe 2, the rainproof ring 11 is fitted with the inner peripheral side surface of the groove portion 10 and the outer peripheral side surface of the narrow edge portion 11d, and the outer peripheral side surface of the groove portion 10 and the inner peripheral side surface of the narrow edge portion 11d. Is inserted loosely. Thereby, the above-mentioned waterway X
Is formed, and the infiltrated water such as rain and snow flows downward along the water path X so as to go around the LED 7.

Also in the alarm sound generating section, the lattice-shaped opening 25 is formed integrally with the main body case 3. Further, since the speaker 21 is firmly fixed and the rain-proof film 23 protruding from the outer edge 21a of the sound-generating portion bends rearward of the sound-generating portion of the speaker 21, there is no need for a conventional holding ring for a rain-proof film. As described above, in the above-described rain-proof alarm device, the configuration of the entire device is significantly simplified as compared with the related art.

[0040]

As described above, according to the present invention, in the glove, a circumferential groove surrounding the light-emitting body is formed in the cover plate, and the outer peripheral side surface of the tip portion is formed on the inner peripheral side surface of the groove. The provision of the cylindrical member that is tightly fitted and tightly attached allows water that has penetrated into the glove to flow down along the outer peripheral side surface of the cylindrical member. Accordingly, water does not enter the inside of the cylindrical member, and it is possible to prevent water from being applied to the luminous body and other internal elements in the glove. In this manner, the rainproof function of the rainproof alarm device becomes more complete, and the effects of further extending the product life and improving the durability in a severe use environment can be obtained.

According to the second aspect of the present invention, since the outer peripheral side surface of the cylindrical member is inclined in the inner diameter direction up to just before the front end portion, water such as rain and snow that has entered the glove is not exposed to the outer peripheral side surface. They will gather at the tip and flow. Accordingly, it is possible to prevent the infiltrated water from being accumulated on the outer peripheral side surface of the cylindrical member, and it is possible to obtain an effect that the water flow along the outer peripheral side surface is promoted and the water quickly flows down.

Further, according to the third aspect of the present invention, since the collar portion is provided at the base end of the cylindrical member, even if a large amount of water infiltrates into the glove, the cylindrical member can be removed. It is possible to prevent the intrusion of moisture from the base end side, and it is possible to obtain an effect that the rainproof function can be further enhanced.

On the other hand, in the invention according to the fourth aspect, the glove is attached to the cover plate by providing a mounting hole of a predetermined shape on the outer circumference of the groove and inserting the claw provided on the glove side. Therefore, no glove mounting base is required. Therefore, it is possible to obtain the effect that the rainproof function can be completed as described above and also that the configuration of the entire rainproof alarm device can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external configuration of a rainproof alarm device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a cover plate 1 removed from a main body case 3;

FIG. 3 is a plan view when only the cover plate 1 is viewed from above.

FIG. 4 is a vertical sectional view (a) of the rainproof ring 11 and a plan view (b) viewed from below.

FIG. 5 is a view showing a cross section of the glove 2;

FIG. 6 is a sectional view of the center of the attachment part of the globe 2;

FIG. 7 is an enlarged view showing an aspect of fitting between the groove 10 and the narrow edge 11d.

FIG. 8 is a view showing the inside of the main body case 3 when the cover plate 1 is removed.

FIG. 9 is a perspective view showing a configuration of an alarm sound generation unit with a front surface of the main body case 3 as a bottom surface.

FIG. 10 is a cross-sectional view of the rain-proof alarm device according to the embodiment.

FIG. 11 is a schematic perspective view showing a conventional rainproof alarm device.

[Explanation of symbols]

 Reference Signs List 1 cover plate 2 glove 3 main body case 4 start switch 6 acoustic hole seal 6a acoustic hole 7 LED 8 band-like hole 9 screw hole 10 groove portion 11 rainproof ring 11a cylindrical portion 11b brim portion 11c stepped surface 11d narrow edge portion 12 nail portion Sa Cylindrical part outer peripheral surface S1 Groove part inner peripheral surface S2 Narrow edge outer peripheral surface X Waterway

Claims (4)

[Claims] 1. An alarm device which has a speaker which emits an alarm sound and a circuit for driving the speaker inside a main body case, and which issues an alarm by operating a start switch, comprising: a light emitter provided on a front surface; A cover plate attached to a front surface of the main body case, the cover member having a circumferential groove surrounding the light emitter, and a cylindrical member having a tip portion fitted with the groove,
A cylindrical member inserted into the groove with an outer peripheral side surface of the tip end portion and an inner peripheral side surface of the groove portion fitted together; and the luminous body and the cylindrical member attached to the front surface of the cover plate. A rainproof alarm device comprising: a glove that covers a member. 2. The rain-proof alarm device according to claim 1, wherein an outer peripheral side surface of said cylindrical member is inclined in an inner diameter direction up to immediately before said tip portion. 3. The rain-proof type alarm device according to claim 1, wherein the cylindrical member is provided at its base end with a flange having a diameter larger than that of the cylindrical portion. 4. The rain-proof alarm device according to claim 1, wherein the cover plate has a mounting hole and a screw hole having a predetermined shape formed on a circumference surrounding the illuminant. A cover plate in which the groove portion is formed along a concentric circle inside the circumference, and the globe projects from an edge on a mounting side to the cover plate in accordance with a shape of the mounting hole. The provided claw portion, and a concave portion that overlaps with the screw hole, the claw portion is fitted into the mounting hole, and a screw is fitted through the overlapped screw hole and the concave portion. A rainproof type alarm device, which is a glove attached to a cover plate.