Fire detector

Abstract

To provide a fire sensor capable of improving visibility about a lighting state of an indicator lamp.SOLUTION: A fire detector (100) includes a main body (20) including a sensor (30) configured to sense occurrence of any of heat, smoke, and flame, an indicator lamp (41), a controller (40) configured to determine whether a fire has occurred based on the heat, the smoke, or the flame sensed by the sensor (30) and to control lighting of the indicator lamp (41) when it is determined that the fire has occurred, and a main body cover (50) configured to house the sensor (30) and the controller (40) therein. The indicator lamp (41) is provided inside the body cover (50), and the body cover (50) transmits light from the indicator lamp (41) so that the light can be visually recognized from the outside.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a fire detector that detects the occurrence of a fire. [Background technology]

[0002] The fire detector sounds an alarm when it detects a fire, and also turns on an indicator light to visually notify that the device has detected a fire and been activated.

[0003] The following fire detectors that visually notify of the occurrence of a fire have been disclosed (see, for example, Patent Document 1): The fire detector in Patent Document 1 improves visibility by reflecting light from the display unit using a reflector. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-93661 Summary of the Invention [Problem to be solved by the invention]

[0005] Fig. 4 is a diagram showing a conventional fire detector, and is a side view of the fire detector installed on a ceiling, and Fig. 5 is a plan view of the fire detector shown in Fig. 4 installed on a ceiling as viewed from below.

[0006] The conventional fire detector 100A is configured by attaching a main body 20A to an installation surface W, which is a ceiling surface, via a base 10A.

[0007] The main body 20A is the main part of the fire detector 100A, and when a fire breaks out in a monitored area where the fire detector 100A is installed, it detects smoke caused by the fire and issues an alarm.

[0008] The body cover 50A that constitutes the exterior of the main body 20A is an opaque resin cover and is provided with an indicator light 41A. The indicator light 41A lights up in a warning color such as red if the air taken in through the ventilation opening 31A is mixed with smoke that could cause a fire. The illumination of this indicator light 41A allows visual confirmation that the fire detector 100A has detected a fire.

[0009] The indicator light 41A also functions as a confirmation light when the fire detector 100A is operated.

[0010] In the conventional fire detector 100A, the indicator light 41A is provided so that its head is exposed from the main body cover 50A, but is provided in only one location on the main body cover 50A. This poses a problem with the visibility of the indicator light 41A, and depending on the desired viewing direction, the indicator light 41A is hidden by the protruding portion P of the main body cover 50A where the ventilation opening 31A is provided, making it impossible to determine whether the indicator light 41A is on or off.

[0011] In the fire detector of Patent Document 1, the visibility of the illuminated display can be improved by using a reflector. However, the reflector needs to be installed inside the device, which requires a process for attaching the reflector, increases the number of parts, and makes the configuration complicated.

[0012] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a fire detector that can improve the visibility of the lighting state of the indicator light. [Means for solving the problem]

[0013] The fire detector of the present disclosure has a main body that includes a sensing unit that detects the occurrence of heat, smoke, or flame, an indicator light (also called a confirmation light), a control unit that determines whether or not a fire has occurred based on the heat, smoke, or flame detected by the sensing unit and controls the lighting of the indicator light when it determines that a fire has occurred, and a main body cover that houses the sensing unit and the control unit inside, and the indicator light is provided inside the main body cover, and the main body cover transmits light from the indicator light so that it can be seen from the outside. [Effects of the Invention]

[0014] According to the present disclosure, a fire detector can be obtained that can improve the visibility of the lighting state of the indicator light. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view illustrating an example of the appearance of a fire detector according to a first embodiment. [Figure 2] 1. FIG. 4 is a perspective view illustrating a configuration in which a light-diffusing member is used for the main body cover in the fire detector shown in FIG. [Figure 3] 3 is a diagram illustrating a state when the fire detector shown in FIG. 2 is turned on. FIG. [Figure 4] FIG. 1 is a diagram showing a conventional fire detector, and is a side view of the fire detector in a state where it is installed on a ceiling. [Figure 5] FIG. 5 is a plan view of the fire detector shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, preferred embodiments of the fire detector of the present disclosure will be described with reference to the drawings. When the fire detector of the present disclosure detects a fire, it turns on an indicator light to visually notify the user that the detector has detected a fire and activated.

[0017] Furthermore, a technical feature of the fire detector disclosed herein is that the indicator light is provided inside the main body cover, and the main body cover is made of a material that allows the light from the indicator light to be visible from the outside.

[0018] Embodiment 1 1 is a perspective view illustrating an example of the appearance of a fire detector according to Embodiment 1. In FIG.

[0019] The base 10 is a pedestal for mounting the main body 20 on an installation surface W. In Fig. 1, the installation surface W is the ceiling surface of a room that is the area to be monitored, but it may also be a side wall surface or the like.

[0020] In embodiment 1, the color of the side of the base 10, i.e., the color of the surface that appears when the fire detector 100 is installed on the installation surface W, is a grayish metallic color also known as black iron, burnt iron, black silver, or gunmetal.

[0021] The main body 20 is a main part of the fire detector 100, and activates an alarm when it detects a fire. The main body 20 includes a detection unit 30, a control unit 40, and a main body cover 50.

[0022] The body cover 50 is an exterior cover that houses and protects the sensing unit 30 and the control unit 40. In the first embodiment, the body cover 50 is made of a transparent material.

[0023] The sensing unit 30 is, for example, a photoelectric spot-type sensor that senses smoke, and includes an internal space that includes a light-emitting element and a light-receiving element (not shown). The light-receiving element is positioned so that it does not receive light from the light-emitting element under normal conditions. In addition, a photoelectric spot-type sensor consisting of a pair of light-emitting and light-receiving elements cannot detect smoke if external light enters. Therefore, when the main body cover 50 is constructed using a transparent material, the sensing unit 30 is configured to prevent external light from entering the interior, and in particular, the interior of the main body of the sensing unit 30 is colored black.

[0024] When smoke occurs in a fire monitoring area where the fire detector 100 is installed and flows into the inside of the detector 30 via the vent 31, the light from the light emitting part hits the smoke particles and is diffused.

[0025] The sensing unit 30 utilizes the characteristics of diffused reflection of light by smoke. That is, the sensing unit 30 receives the diffused light with a light receiving unit, performs photoelectric conversion, and outputs a smoke detection signal representing the amount of smoke to the control unit 40.

[0026] The control unit 40 is a board that is attached so as to be parallel to the installation surface W when the fire detector 100 is installed on the installation surface W.

[0027] In this example, the control unit 40 receives a smoke detection signal from the detection unit 30 via a wire (not shown) and determines whether the value of the smoke detection signal exceeds a threshold. If the value of the smoke detection signal exceeds the threshold, the control unit 40 turns on the indicator light 41, indicating that smoke indicating a fire is occurring.

[0028] The control unit 40 may also turn on the indicator light 41 for confirmation when an operation for checking the operation of the fire detector 100 is performed.

[0029] The indicator light 41 is a chip LED that lights up when the control unit 40 determines that a fire has occurred, and is provided inside the main body cover 50.

[0030] 1, the main body cover 50 is a transparent member, and therefore transmits light from the indicator light 41 when the indicator light 41 is lit. Therefore, the lit state of the indicator light 41 can be seen from outside the main body cover 50. In other words, the lit state of the indicator light 41 can be seen from outside without the top of the indicator light 41 being exposed from the main body cover 50.

[0031] Furthermore, a plurality of indicator lights 41 are provided around the circuit board of the control unit 40. Therefore, compared to the conventional fire detector 100A, which lights up in one place, the fire detector 100 emits more light when lit, and the lit state can be easily confirmed from any direction outside.

[0032] Furthermore, in the first embodiment, a transparent material is used for the main body cover 50 of the main body 20, and a grayish metallic color such as black iron, burnt iron, or black silver is used for the side of the base 10. Therefore, the fire detector 100 can be adapted to various interior designs without disturbing the atmosphere or scenery of the room in which it is installed.

[0033] Fig. 2 is a perspective view illustrating a configuration in which a light-diffusing member is used for the main body cover 50 in the fire detector 100 shown in Fig. 1. Fig. 3 is a diagram illustrating a state in which the fire detector 100 shown in Fig. 2 is turned on.

[0034] Here, a milky white acrylic material or a semi-milky acrylic material can be used as the light diffusing material, and a configuration in which a light diffusing film is attached to the surface of the main body cover 50 can also be used.

[0035] 1, if a highly transparent material is used for the main body cover 50, the indicator light 41 can be directly seen. Therefore, the light from the indicator light 41 is seen as if it is lit at a single point at the installation position of the indicator light 41.

[0036] On the other hand, by using a light-diffusing material for the main body cover 50, it is possible to transmit light so that the entire main body cover 50 emits a soft, uniform glow when the indicator light 41 is turned on, as shown in Figure 3. Therefore, it becomes possible to identify at a glance which fire detector 100 is activated when an alarm is triggered.

[0037] In the above-described first embodiment, the sensing unit 30 has been described as sensing smoke, but it may also sense heat or flames in addition to smoke. That is, the sensing unit 30 may be configured to sense the occurrence of any of heat, smoke, and flames. The control unit 40 may also be configured to determine whether a fire has occurred based on not only the amount of smoke sensed by the sensing unit 30 but also the heat, smoke, and flames sensed by the sensing unit 30.

[0038] The features of such a fire detector 100 can be summarized as follows, and the effects can be achieved as follows.

[0039] The fire detector 100 has a main body 20, which is provided with a detector 30 that detects the occurrence of heat, smoke, or flame, and an indicator light 41.

[0040] The main body 20 also includes a control unit 40 that determines whether or not a fire has occurred based on the heat, smoke, and flames detected by the detection unit 30, and controls the lighting of an indicator light 41 when it determines that a fire has occurred, and a main body cover 50 that houses the detection unit 30 and the control unit 40 inside.

[0041] The indicator light 41 is provided inside the body cover 50, and the body cover 50 transmits light from the indicator light 41 so that it can be seen from the outside.

[0042] This makes it possible to obtain a fire detector 100 that can improve the visibility of the lighting state of the indicator lamp 41.

[0043] Furthermore, the main body cover 50 is made of a light-diffusing material, and transmits light so that the entire cover emits light when the indicator light 41 is turned on. In particular, by appropriately setting the position of the indicator light and the light-diffusing material, it is possible to transmit light more uniformly from the entire cover.

[0044] This allows for greater visibility, making it possible to identify at a glance whether the device has detected a fire and is operating.

[0045] The fire detector 100 also includes a base 10, which is a pedestal for attaching the main body 20 to an installation surface W, and the color of the side of the base 10 is a grayish metallic color. This allows the fire detector 100 to fit into a variety of interior designs when it is not lit.

[0046] A plurality of indicator lights 41 are provided, and the control unit 40 is a substrate that is attached so as to be parallel to the installation surface W when the fire detector 100 is installed on the installation surface W. The plurality of indicator lights 41 are arranged around the surface of the substrate.

[0047] This further improves visibility from various external directions. [Explanation of symbols]

[0048] 10 base, 20 main body, 30 sensing unit, 31 ventilation port, 40 control unit, 41 indicator light, 50 main body cover, 100 fire detector.

Claims

1. a sensor that senses the occurrence of heat, smoke, or flame; Indicator lights and a control unit that determines whether or not a fire has occurred based on the heat, smoke, and flames detected by the detection unit, and controls the illumination of the indicator light when it determines that a fire has occurred; a main body cover that houses the sensing unit and the control unit therein; a body portion comprising: The indicator light is provided inside the main body cover, The main body cover transmits light from the indicator lamp so that the indicator lamp can be seen from the outside. fire detector.

2. A sensor that detects the generation of smoke; Indicator lights and a control unit that determines whether a fire has occurred based on the amount of smoke detected by the detection unit, and controls the indicator light to light up when it determines that a fire has occurred; a main body cover that houses the sensing unit and the control unit therein; a body portion comprising: The indicator light is provided inside the main body cover, The main body cover transmits light from the indicator lamp so that the indicator lamp can be seen from the outside. fire detector.

3. The main body cover is made of a light-diffusing material, and transmits light so that the entire cover emits light when the indicator light is turned on.

3. The fire detector according to claim 2.

4. a base that is a pedestal for attaching the main body to an installation surface; The color of the side surface of the base is a grayish metallic color.

4. A fire detector according to claim 2 or 3.

5. A plurality of the indicator lights are provided, the control unit is a board attached to the fire detector so as to be parallel to the installation surface when the fire detector is installed on the installation surface, The plurality of indicator lights are arranged in a circumferential direction on the surface of the substrate.

4. A fire detector according to claim 2 or 3.

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