JP2007114813A - Fire alarm with earthquake sensing light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire alarm with an earthquake sensing light, which is excellent in performance and operability while preventing a fire detection part from being seen from the outside. <P>SOLUTION: This fire alarm 1 with an earthquake sensing light is configured by exposing a smoke sensor 7 from a case, and covering the upper end of the smoke sensor with a cover 4. The cover 4 is shaped like a long elliptic circle, and supported like a cantilever beam by a support part 4A at its one edge side so that the side face of the smoke sensor can be prevented from being covered. Also, a beam-shaped switch driving part 4E is installed near a flexible part 4F installed near the support part of the cover, and the angular change of the cover bending with the flexible part as a fulcrum by pushing the top end of the cover is enlarged as displacement at the top end of the switch driving part. The cover is configured as the switch driving part, so that an operation position in the case of operation confirmation can be easily obtained. Also, the cover is shaped like a cantilever beam, so that the structure of a peripheral section as the open air introduction section of the smoke sensor can be minimized, and that the flow of the open air can be prevented from being disturbed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disaster prevention device in which a fire alarm attached to a ceiling or a wall and a seismic light are integrated, and provides an alarm device that achieves both decorativeness and ease of use.

  Conventionally, various types of fire alarms that react to smoke, heat, etc., and a seismic light function that causes an emergency light by earthquake vibration have been proposed. In particular, fire alarms are presumed to be installed in public spaces with high ceilings such as stores, hotels, schools, offices, etc., and it is common to match the colors with the ceiling so that they are not noticeable. . In addition, since these are only the sensor part of the centralized management system that is embedded and installed at the time of construction, the amount of protrusion is relatively small, making it even less conspicuous, and the design is often office work with priority on function. On the other hand, the seismic light has been proposed to be plugged directly into the outlet or the stationary type, but there are few things that are fixed to a high position such as the ceiling giving priority to ease of installation. Therefore, although the vicinity of the light is illuminated, the irradiation range tends to be narrow, and there is an insufficient point as an emergency light. There is also a seismic light attached to the socket of the lighting, but there is a problem that the lighting equipment itself becomes an obstacle and the light from the light does not spread sufficiently.

  Recently, there is a need to install a home fire alarm. However, when a fire alarm is installed at home, the fire ceiling is generally low compared to public spaces as described above. The vessel is easy to see. In addition, many are so-called retrofitting types that do not require wiring, which integrates a power supply, detector, and alarm device, so they are relatively large, and they are installed directly without any troublesome embedding work in the ceiling. There is a problem that the department cannot be reduced. Further, since the size of the device becomes larger when the seismic light function is incorporated in the fire alarm, the two devices have not been integrated.

JP 2002-008158 A JP-A-8-228442

  In order to make it difficult to notice the presence of household fire alarms in daily life, they are usually placed behind shadows such as lighting equipment so that they are not easily noticeable. There is a need for ingenuity such as a design that can be recognized as one.

  However, when placing a fire alarm in the shadow of something, it is necessary to be careful not to disturb the flow of smoke or heat to the fire alarm, and recently lighting equipment is embedded in the ceiling. In many cases, there is no part to hide the fire alarm. In particular, when the fire alarm and the seismic light are integrated, there is a problem that not only the size is increased but also the light cannot be projected to a necessary range if the light portion is hidden.

  Therefore, when priority is given to the design on the assumption that the device can be seen, if the cover is placed so that the part that detects smoke or heat is not directly visible, the reaction rate may be reduced. In other words, since the cover covers the detection unit, the outside air accompanied with smoke or heat is prevented from being introduced into the detection unit, and the reaction time at the time of fire may be reduced.

  In addition, the layout of switches may be an obstacle in design. For example, since it is necessary to constantly monitor a fire alarm, it is not necessary to operate the power switch once the power is turned on. On the other hand, when the device is driven by a battery, a test for confirming operation and battery capacity is required. However, when a test switch is provided on the case, the operability is good if the switch is conspicuous. There is a problem that operation becomes difficult if it is made small so as to affect the design and not affect the design. In particular, since the device is not at hand after it is mounted on the ceiling or wall, there is a problem that the position of the switch is difficult to understand and the operation becomes more difficult if the switch is small or placed in a position that is not easily noticeable. It was.

  Furthermore, in order to integrate the fire alarm and the seismic light, there is a need for a device that integrates the functions and reduces the size.

  Therefore, in the present invention, the cover constituting the case so as to cover the surface is formed in a cantilever shape, and is held and fixed on the case at a position sufficiently away from the fire detection unit in one direction. In addition, not only decorativeness but also operability and functionality have been realized by using a part of the cover as a switch drive unit and further using this switch drive unit as a mechanism for enlarging the change in the cover angle as a displacement. In addition, the light emitting part of the seismic light was arranged on the support part of the cover, and the whole device was downsized.

  By supporting the cantilevered cover at a position sufficiently away from the fire detection unit, the cover covers only the end surface of the fire detection unit and is placed near the outer peripheral surface that is the outside air introduction unit of the fire detection unit The structure to be made is minimized, and the outside air is introduced into the detection unit without being disturbed. In addition, since a part of the cover is a switch driving unit for operation test, it is possible to easily and surely operate the switch unit without searching by hand even when it is mounted on a ceiling or the like.

  Furthermore, since the hook-shaped portion extending from the vicinity of the fulcrum at the time of the cover pressing displacement in a direction substantially perpendicular to the surface of the cover is used as the switch driving portion, the switch can be driven without providing a driving portion at the tip of the cover. A sufficient displacement is obtained. Therefore, it is not necessary to increase the number of structures on the peripheral edge, which is the outside air introduction part of the fire detection part. Further, by providing the light emitting part of the seismic light on the support part of the cover, it is possible to efficiently arrange the necessary functions within the limited projection plane.

  The cover that makes up the case of the device is made into an ellipse, and one end of the cover is supported in a cantilevered form at a distance sufficiently away from the fire detection unit. Close obstacles are minimized. Further, a part of the cover is made a movable structure so that a switch driving unit provided on the cover is moved by operation, and the switch is operated in conjunction with the operation of the cover.

  Hereinafter, the fire alarm with a seismic light of the present invention (hereinafter referred to as a fire alarm) will be described with reference to the drawings. FIG. 1 is a bird's-eye view showing an example of an installation state of the fire alarm, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a side view. Further, FIG. 5 shows a side view of the fire alarm when the case is opened, and FIG. 6 shows a longitudinal sectional view as seen from the front.

  This fire alarm 1 comprises a case made up of a plastic base 2 and a body 3, and is further provided with an oblong cover 4 that covers the opening of the case. This fire alarm 1 attaches the bottom surface 2A of the container to the ceiling of the room as shown in the overhead view of FIG. 1 or to the wall surface, and is attached with the bottom face up or side when in use. . In this embodiment, an example of attaching to the ceiling is taken as an example, and for example, it is fixed to the ceiling with a screw or the like through an attachment hole penetrating the base bottom surface 2A.

  In the embodiment, a battery 5 as a power source is disposed in the base 2, and a printed circuit board 6 is fixed to the body 3 that covers the opening of the base. The sensor 7 and the buzzer 8 are arranged and fixed on the lower surface of the printed circuit board in an inverted state. The seismic device 9 is arranged in a normal posture when the fire alarm device 1 is in a normal posture. For example, in the case where the fire alarm device is mounted vertically on the wall, it is mounted in parallel with the substrate. Further, the body 3 is structured to be cantilevered with respect to the base 2 by a hinge 3B, and a locking groove (a front end of a locking portion 2B provided on the opposite side of the base is provided on the inner side of the body 3). (Not shown) is elastically engaged.

  The smoke detector 7 which is a fire detector is exposed to the outside through a through-hole 3A provided in the body 3, and the outer peripheral surface having an outside air introduction portion inside the smoke detector is exposed. In the event of a fire, the smoke is quickly taken into the interior. Further, a cover 4 is installed on the body 3 so as to cover the periphery of the opening including the end face of the smoke detector from above. However, the cover 4 is sufficiently separated from the surface of the body 3, and the outer peripheral surface, which is the smoke introduction portion of the smoke detector 7, is exposed to the outside air without being covered.

  The cover 4 has an oblong shape, and an attachment portion 4A provided on one end side thereof is inserted into the body 3 and fixed. The tip of the mounting portion 4A has a shape with a barb for preventing it from coming off, and is fixed by being inserted into the cover. Further, in the present embodiment, the plate-like portion 4D is integrally provided on the side surface of the attachment portion, and the cover 4 rotates when the plate-like portion is inserted into a notch provided on the side of the attachment hole of the body 3. It is prevented. In addition, the oval cover 4 is fixed by a mounting portion on one end side, and the entire cover is formed in a cantilever shape so as to cover the end surface of the smoke detector 7, so that the outer periphery of the smoke detector having the outside air introduction portion is provided. Obstacles in the vicinity of the surface are concentrated only in one direction on the cover support part side, and the other directions can eliminate the obstacles. Further, by sufficiently separating the mounting portion 4A from the smoke detector 7, the influence of the support portion is minimized, and smoke is not generated in the event of a fire without disturbing the introduction of outside air to the smoke detector 7 which is a fire detection portion. Can be detected promptly.

  Further, on the cover surface side of the mounting portion 4A, there is provided a light emitting portion 4B in which light bulbs or LEDs of seismic light are arranged in a concave conical shape. The surface of the cover 4 is gloss-plated, and the conical surface of the light emitting unit 4B becomes a reflecting surface so that light from a light bulb or the like is efficiently irradiated in the front direction. Therefore, when an earthquake occurs at night, it is possible to illuminate a wide area in the room with a light.

  Near the center of the cover 4 is provided an operation rod 4E that is a switch drive unit that moves in conjunction with the cover. The operation rod 4E is a hook-shaped portion extending substantially at right angles to the plane of the cover 4, and the tip thereof is inserted into the body 3. Further, the cover 4 is formed with a flexible portion 4F which is thinner than the surrounding and provided with flexibility at a position closer to the mounting portion 4A than the operation rod 4E. When the operation surface 4G is pressed, the cover 4 is flexible. The cover 4 is bent with the portion 4F as a fulcrum, and the displacement of the tip of the operation rod 4E interlocked with the change in angle at that time is enlarged, and the test switch 10 on the board arranged at an angle of 90 degrees with the pressing direction is driven. . According to the present invention, since the wide surface of the cover 4 is the operation surface 4G, the operation switch is reliably operated without searching for it even when it is arranged at a position where it is difficult to reach, such as a ceiling or a wall. be able to.

  For example, the switch drive unit may be disposed near the tip of the cover 4 beyond the fire detection unit, or the switch may be driven by pushing the entire cover. However, when the switch drive unit is provided at the tip of the cover, the amount of displacement when the cover is broken increases, but the number of structures on the periphery of the fire detection unit increases, which introduces outside air into the detection unit. May have an effect. When the entire cover is pushed in, the structure needs to be elastically held by the mounting portion 4A, which is the support portion of the cover 4, and a similar force or force is applied to the operation portion regardless of which position of the cover is pressed. It is also necessary to reduce the tilt during operation so that the displacement is given.

  On the other hand, in this embodiment, the fulcrum when the cover is displaced is arranged on the support side with respect to the fire detection part, and the switch drive part is extended from the vicinity of the fulcrum to the surface of the cover in a direction substantially perpendicular to the fire. The structure with respect to the detection part can be concentrated on the support part side, and the switch can be reliably driven by the hook-like switch driving part becoming a displacement enlargement mechanism. Further, it is not necessary to add special parts for holding the cover support part, and a simple part structure can be obtained.

  In the present embodiment, a recess is provided on the operation surface 4G of the cover to make the light emitting unit 4B and the design uniform, and to make it easy to understand the pressing portion serving as the operation position. In this embodiment, the cover 4 is bent elastically. For example, if the cover is elastically tilted with the mounting portion 4A as a fulcrum, it is necessary to provide the flexible portion 4F. It goes without saying that there is nothing.

  According to the present invention, the design and the detection performance can be compatible by minimizing the obstacles that are close to the surrounding outside air introduction part while covering the fire detection part. In addition, since the operation unit such as the test switch is the cover itself, it is easy to understand intuitively and good operability can be obtained. In addition, the fire alarm and seismic light are integrated and placed at a high position on the ceiling, etc., so that fires can be detected, as well as illuminating a wide area, even in the event of an earthquake at night, alleviates anxiety in the dark. And encourage appropriate actions.

The bird's-eye view which shows an example of the attachment state of the fire alarm with a seismic light of this invention Top view of the fire alarm with seismic light in Figure 1 Front view of the fire alarm with seismic light in Figure 1 Side view of the fire alarm with seismic light in Figure 1 1 is a side view showing a state where the case of the fire alarm with seismic light in FIG. 1 is opened. Vertical section of the fire alarm with seismic light in Figure 1

Explanation of symbols

1: Fire alarm with seismic light 2: Base 3: Body 3A: Through hole 4: Cover 4A: Mounting part (supporting part)
4B: Light emitting part 4E: Operation rod (saddle-shaped part)
4F: Flexible part (fulcrum)
6: Printed circuit board 7: Smoke detector (fire detector)
8: Buzzer 9: Shock absorber

Claims (4)

A fire detector and a seismoscope are placed in the case,
A fire alarm with a seismic light that issues a warning when a fire occurs and lights the light for a predetermined time when an earthquake occurs,
The fire detection part protrudes the outside air introduction part from the opening of the case,
A cover is installed to cover the end face of the protruding part,
This cover is provided with a light emitting part in which light bulbs, LEDs, etc. are arranged in a concave conical shape with a gloss treatment such as plating,
A fire alarm with a seismic light, characterized in that the cover is formed in a cantilever shape and is supported at a position sufficiently away from the fire detection unit in one direction. 2. The fire alarm with a seismic light according to claim 1, wherein a part of the cover serves as a switch drive unit for performing a test operation by pressing the cover. The fulcrum when the cover is displaced is located on the support side with respect to the fire detection part,
The switch drive part is a hook-like part extended from the vicinity of this fulcrum to the surface of the cover in a direction substantially perpendicular to the cover surface.
The fire alarm with a seismic light according to claim 2, wherein the switch is operated by enlarging an angle change at the time of pressing the cover as a displacement in the vicinity of the tip of the bowl-shaped portion. The fire alarm with a seismic light according to any one of claims 1 to 3, wherein a light emitting part of the seismic light is disposed on the cantilevered support portion of the cover.

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