JP2013190859A - Drain structure for electrical equipment - Google Patents

Abstract

A water drainage structure for an electrical device that makes it difficult for water to come into contact with members arranged inside the housing even when water enters the housing and to easily drain the infiltrated water to the outside of the housing. provide.
A housing Y having a sealing body 20 covering at least a part of the device main body and the device main body, a substrate portion provided inside the housing Y and provided with a detection unit for detecting a change in the external environment, A housing portion 22 that is erected from the sealing body 20 toward the inside of the housing Y and that houses the detection portion, and the housing portion drainage path 22a that discharges water that has entered the housing portion 22 is sealed. A drainage structure for electrical equipment formed along the line 20.
[Selection] Figure 5

Description

  The present invention relates to a drainage structure for discharging water that has entered an internal space of an electrical device, which is installed on a wall surface indoors or outdoors, to the outside of the electrical device.

  For example, as an electronic device used in a bathroom, Patent Literature 1 discloses a gas alarm device including a housing that houses a speaker. In the housing, a sound emitting hole penetrating the housing, a sound emitting tube portion standing up toward the inside of the housing so as to surround the sound emitting hole, and an opening of which is closed by the speaker, The sound emitting tube portion is provided with a recessed water pool portion on the inner peripheral surface thereof in a vertically downward direction.

  By configuring the alarm device in this way, by providing a concave water pool portion on the inner peripheral surface of the sound emitting tube portion vertically downward, water enters the sound emitting tube portion from the sound emitting hole. In addition, since water accumulates in the water reservoir, water does not adhere to the diaphragm of the speaker. As a result, it is possible to prevent poor sound generation of the speaker diaphragm and to prevent deterioration of the speaker.

  In addition, the alarm device described in Patent Document 1 has a drainage groove provided at one end thereof in communication with the water reservoir, the other end opened vertically downward, and a recess provided on the outer surface of the housing. Thereby, the water collected in the water reservoir is discharged to the outside of the housing through the drain groove. For this reason, it is possible to more reliably prevent the sound generation failure of the speaker diaphragm and the deterioration of the speaker.

JP 2011-186594 A

  The alarm device described in Patent Document 1 is used in, for example, a bathroom, but there is a possibility that water may enter from a gas introduction port that introduces a gas to be detected into the housing. If water enters the interior of the housing from the gas inlet, water may touch members such as the gas detection element and the substrate disposed inside the housing, which may cause failure of these members.

  Accordingly, an object of the present invention is to provide an electrical device in which even if water enters the inside of the housing, it is difficult for the water to touch the members disposed inside the housing, and the intruded water is easily discharged to the outside of the housing. It is to provide a water draining structure.

  In order to achieve the above object, the first characteristic configuration of the drainage structure for an electric device according to the present invention is a housing having a device body and a sealing body covering at least a part of the device body, and provided inside the housing. A substrate portion provided with a detection portion for detecting a change in the external environment, and a storage portion that is erected from the sealing body toward the inside of the housing and stores the detection portion, In the point which formed the accommodating part drainage channel which discharges the water which permeated the said accommodating part along the said sealing body.

By storing the detection unit in the storage unit as in this configuration, the stored detection unit can be isolated from the internal space of the housing. Therefore, even if water enters the inside of the housing, it is difficult for water to touch the detection unit isolated from the internal space of the housing, so that damage and deterioration due to the detection unit touching water can be prevented.
In addition, as in this configuration, if a storage unit drainage channel that discharges water that has entered the storage unit is formed along the sealing body, the water that has entered the storage unit is immediately discharged through the storage unit drainage channel. Can do.

  The 2nd characteristic structure of the drainage structure of the electric equipment which concerns on this invention exists in the point which connected the said accommodating part drainage channel to the 1st drainage port formed in the 1st side surface of the said sealing body.

  If the first drain outlet is formed on the side surface as in this configuration, water vapor and smoke from below are less likely to enter the interior of the electrical device than when the first drain outlet is formed on the lower surface of the electrical device.

  A third characteristic configuration of the drainage structure for an electrical device according to the present invention is that a stepped portion is formed in the lower portion at a connection position of the housing portion drainage channel and the first drainage port.

  As in this configuration, by forming a stepped portion that is recessed downward at the connection position of the housing portion drainage channel and the first drainage port, water from the housing portion drainage channel is likely to accumulate in the stepped portion. Therefore, if an oil smoke filter is disposed at the first drain port, even if water adheres to the oil smoke filter, water easily adheres only near the lower part (step part) of the oil smoke filter. Is less likely to clog. Therefore, in this structure, the passage state of the first drain port becomes good, and for example, the gas to be detected introduced into the storage unit and the water that has entered the storage unit can be reliably discharged from the first drain port.

  The 4th characteristic structure of the drainage structure of the electric equipment which concerns on this invention exists in the point which the said accommodating part drainage channel connected to the 2nd drainage port formed in the 2nd side surface facing said 1st side surface.

  In this structure, since the 2nd drain outlet is formed in the side surface, it is hard to penetrate | invade into the inside of an electric equipment from the said 2nd drain outlet similarly to the 1st drain outlet mentioned above from the downward | lower water vapor | steam and smoke. In addition, in this configuration, since the second drainage port for discharging the detected gas and water from the storage unit drainage channel to the outside of the electric device is further provided, the detected gas and water are more efficiently discharged to the outside of the electric device. Can be discharged.

  A fifth characteristic configuration of the drainage structure for an electric device according to the present invention is an informing unit for receiving an output signal from the detection unit and informing the inner side of the housing from the sealing body. A cylindrical portion that engages with at least a part of the outer periphery of the notification portion, and a cylindrical portion drainage channel that discharges water that has entered the cylindrical portion is formed along the sealing body. The cylindrical part drainage channel is in a point connected to the second drainage port.

  In this configuration, the water that has entered the inside of the cylindrical portion does not collect in the water reservoir as described in Patent Document 1, but immediately passes through the cylindrical portion drainage passage from the second drainage outlet to the electric device. Can be discharged outside.

It is a perspective view which shows the outline | summary of the external appearance of an electric equipment (gas alarm device). It is a disassembled perspective view of a gas alarm device. It is a disassembled perspective view of a gas alarm device. It is the schematic of the notch of a sealing body. It is the principal part schematic which showed the accommodating part drainage channel and the cylindrical part drainage channel in the back surface of a sealing body. It is a principal part schematic of the gas alarm which formed the crossing water channel.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The present invention is a water drainage structure for an electrical device having a housing formed by a sealing body that covers at least a part of the device body and the device body.

  As shown in FIGS. 1 to 6, the electrical device X includes a housing Y having a device body 10 and a sealing body 20 that covers at least a part of the device body 10, and an external environment. The substrate part 30 provided with the detection part 31 for detecting the change of the above and the accommodation part 22 standing from the sealing body 20 toward the inside of the housing Y and accommodating the detection part 31 are provided. The drainage structure of the electric device X according to the present invention is configured by forming a storage unit drainage path 22 a that discharges water that has entered the storage unit 22 along the sealing body 20.

  The electric device X may be any device as long as it is installed on the wall surface indoors or outdoors. As an electric equipment installed in the said wall surface, the alarm device for disaster prevention or crime prevention is mentioned, for example. The alarm device includes a detection unit 31 that detects a change in the external environment. The detection unit 31 may be any sensor that detects a change in the external environment. As such a sensor, an oxygen sensor, a CO sensor, a gas sensor such as a city gas sensor, a fire sensor, or the like can be used. It is not something that can be done.

The gas sensor may be in any form as long as it detects the gas to be detected. For example, an oxygen sensor can detect oxygen gas, a CO sensor can detect carbon monoxide gas generated by incomplete combustion, and a city gas sensor can detect a leaked gas such as hydrocarbon gas. A semiconductor sensor element, a contact combustion sensor element, or the like can be used.
As the fire sensor, a temperature sensor that senses an increase in temperature, a known scattered light smoke sensor having a smoke sensing function, or the like can be used.

  This embodiment demonstrates the aspect which installs the gas alarm which detects the leakage of CO gas as the electric equipment X on the wall surface of a kitchen. The shape of the gas alarm device X is not particularly limited, but in the present embodiment, the gas alarm device X has a rectangular shape in a top view and exemplifies a thick plate shape (for example, 12 × 7 × 2.5 cm). . In this case, the gas alarm device X can be installed, for example, in a vertically installed posture (installation posture) in which the long side is installed vertically to the ground.

  The apparatus main body 10 accommodates the board | substrate part 30, and forms the bottom face 11 and the side surface 12 integrally. That is, the substrate unit 30 is accommodated in a space surrounded by the bottom surface 11 and the side surface 12. At the end of the side surface 12 (on the side of the sealing body 20), a main body peripheral edge portion 12 a that is disposed so as to overlap the sealing body 20 is formed. In this embodiment, when the sealing body 20 is assembled to the device main body 10, when the main body peripheral edge 12 a and the sealing end 21 of the sealing body 20 are overlaid, the main peripheral edge 12 a is on the inner side. The case where it is located in will be described.

  Moreover, this embodiment demonstrates the case where the groove part B is formed in the main body peripheral edge part 12a so that the peripheral edge of the gas alarm device X may be followed. In this case, when the sealing end portion 21 and the main body peripheral edge portion 12a are overlapped, the sealing end portion 21 covers the groove B formed in the main body peripheral edge portion 12a.

  A plurality of waterproof ribs 12b are formed on the peripheral edge 12a of the main body over the entire circumference, and the groove B is formed by a space between adjacent waterproof ribs 12b. At least one groove B may be formed. In the present embodiment, a case where two groove portions B are formed will be described.

  The sealing body 20 is a member that covers at least a part of the device main body 10. In the present embodiment, a case where the sealing body 20 covers the entire device main body 10 will be described.

The sealing body 20 includes a speaker opening 24 that emits an alarm sound emitted from the notification unit 32 to the outside, a detected gas introduction port 26 that introduces a detected gas into the detection unit 31, and a switch that performs a switch operation. A pressing portion 27 is formed, and a light guide portion 28 and a battery 29 are disposed in a recess formed on the back surface of the sealing body 20.
A sealing plate 40 is attached to the surface of the sealing body 20. The sealing plate 40 is formed with a speaker opening 44 and a detected gas inlet 46 corresponding to the speaker opening 24 and the detected gas inlet 26, respectively.

  Components such as a detection unit 31, a notification unit 32, an LED 33, and a switch unit 34 are disposed on the substrate unit 30. This embodiment demonstrates the case where an electrochemical CO sensor is used as the detection part 31 which detects CO gas. An electrochemical CO sensor is a sensor that guides CO gas onto a working electrode having a catalytic action through a diaphragm and oxidizes the CO gas to output a voltage or current corresponding to the gas concentration. The notification unit 32 may have any form as long as it receives a signal from the detection unit 31 and issues a warning. For example, a piezoelectric speaker or the like can be used. The light emitted from the LED 33 is emitted to the outside through the light guide unit 28.

  The detection unit 31 is accommodated in the accommodation unit 22 that is erected from the sealing body 20 toward the inside of the housing Y. The shape of the storage unit 22 is not particularly limited as long as the electrochemical CO sensor as the detection unit 31 can be stored. In the present embodiment, a case of a rectangular shape is illustrated. The accommodating portion 22 is erected from the back surface of the sealing body 20, and the rectangular opening of the accommodating portion 22 is closed by the substrate portion 30. By storing the detection unit 31 in the storage unit 22, the stored detection unit 31 can be isolated from the internal space of the housing Y. Even if water enters the inside of the housing Y, it is difficult for the water to touch the detection unit 31 isolated from the internal space of the housing Y.

Further, in the present invention, the accommodating portion drainage path 22 a for discharging the water that has entered the accommodating portion 22 is formed along the sealing body 20.
The accommodating portion 22 accommodates an electrochemical CO sensor that is a detecting portion 31, and a detected gas introduction port 26 for introducing CO gas into the electrochemical CO sensor is formed. When the gas alarm device X is installed on the wall surface, water may enter the inside of the accommodating portion 22 from the detected gas introduction port 26. However, if the accommodating part drainage path 22a that discharges the water that has entered the accommodating part 22 is formed along the sealing body 20 as in this configuration, the water that has entered the accommodating part 22 is immediately discharged to the accommodating part drainage path 22a. Can be discharged from.
A sealing material (not shown) that fills the gap between these members may be disposed at the contact portion between the housing portion 22 and the substrate portion 30. The sealing material may be constituted by a thin film made of PET, for example, and may be disposed so as to cover the rectangular opening of the housing portion 22 with the thin film. Thereby, for example, even when water enters the inside of the housing portion 22 from the detected gas inlet 26, the water that has entered from the gap between the housing portion 22 and the substrate portion 30 enters the internal space of the electrical device X. Can be prevented in advance.

The accommodating part drainage channel 22a is connected to the first drainage port 22b formed in the first side surface 20a of the housing Y. In this configuration, one end of the accommodating portion drainage channel 22a is connected to the accommodating portion 22, and the other end is connected to the first drain port 22b.
If an opening is formed in the bottom surface of the gas alarm device X and the gas alarm device X is disposed on the wall surface of the kitchen, water vapor and smoke generated during cooking enter the gas alarm device X from the opening in the bottom surface. There is a risk of doing. However, if the first drain port 22b is formed on the first side surface 20a as in this configuration, the water vapor and smoke are less likely to enter the gas alarm device X through the opening on the bottom surface.

A stepped portion 22c that is recessed downward is formed at the connection position of the accommodating portion drainage channel 22a and the first drainage port 22b. The “downward” in the present specification means the lower side when the gas alarm device X is in the installation posture.
Since one end of the accommodating part drainage channel 22a is connected to the accommodating part 22, the CO gas introduced from the detected gas introduction port 26 into the accommodating part 22 passes through the accommodating part drainage channel 22a to the first drainage port 22b. Can be discharged from. If the state where the CO gas stays in the gas alarm device X continues, for example, the timing at which the alarm sound of the notification unit 32 stops sounding is delayed. Therefore, it is preferable that CO gas can be quickly discharged to the outside of the gas alarm device X.
The first drain port 22b may be provided with an oil smoke filter 22d that prevents oil smoke generated during cooking from entering the gas alarm device X. In this case, there is a possibility that the oil smoke filter may be clogged due to the water from the container drainage channel 22a adhering to the mesh of the oil smoke filter. In this case, it is difficult for the CO gas to be discharged from the first drain port 22b to the outside of the gas alarm device X.
As in this configuration, by forming the step portion 22c that is recessed downward at the connection position of the accommodating portion drainage channel 22a and the first drainage port 22b, water from the accommodating portion drainage channel 22a is supplied to the stepped portion 22c. It becomes easy to collect. Therefore, when an oil smoke filter is disposed at the first drain port 22b, even if water adheres to the oil smoke filter, water easily adheres only near the lower portion (step portion) of the oil smoke filter. Is less likely to clog. Therefore, in this configuration, the CO gas can be reliably discharged easily from the first drain port 22b via the housing portion drain channel 22a.
In addition, although it has been described that the oil smoke filter 22d may be disposed at the first drain port 22b, the oil smoke filter 22d is not only the first drain port 22b, but also the speaker opening 24 and the detected gas introduction port 26. You may arrange | position etc.

The accommodating part drainage channel 22a is connected to a second drainage port 23b formed on the second side surface 20b facing the first side surface 20a.
In this configuration, since the second drainage port 23b is formed on the second side surface 20b, water vapor and smoke generated during cooking are unlikely to enter the gas alarm device X as with the first drainage port 22b. Moreover, in this structure, since the 2nd drainage port 23b which discharges the water and CO gas from the accommodating part drainage path 22a to the exterior of the gas alarm device X is further provided, the said water and CO gas are more efficiently gas-alarmed. It can be discharged outside the container X.

  In this embodiment, the drainage part C which can discharge | release the water which permeated the inside of the gas alarm device X in the peripheral edge A of the gas alarm device X is formed.

  In this configuration, when the gas alarm device X is arranged so that the peripheral edge A where the drainage portion C is formed faces downward, the water that is about to enter the gas alarm device X is discharged from the drainage portion C by gravity. be able to. That is, since the groove part B and the waterproof rib 12b are provided in a direction substantially orthogonal to the water intrusion direction, it is possible to block water such as rainwater that has entered the waterproof rib 12b. Even if rainwater or the like enters the interior space of the gas alarm device X beyond the first waterproof rib 12b, it can be blocked by the next waterproof rib 12b. The blocked water can flow down the gas alarm device X through the groove B, reach the drain C, and be discharged outside.

  In the present embodiment, the drainage portion C is a gap when the main body peripheral edge portion 12a and the sealing end portion 21 are arranged in an overlapping manner.

  Such a gap communicates with a groove B formed in the main body peripheral edge 12a. Therefore, according to this structure, since the clearance gap formed when the sealing body 20 is assembled | attached to the apparatus main body 10 can be made into the drainage part C, the drainage part C can be formed easily.

  Moreover, since the said clearance gap can be formed over the length of a long side, and the length of a short side, the drain part C can be formed long. Thereby, the area | region which can discharge | emit the water which was going to enter the inside of the gas alarm X can be ensured over the periphery of the gas alarm X. Such a gap is usually formed in an elongated line shape. In this case, since the water that has reached the drainage portion C is likely to move through the gap by capillary action, it is easy to efficiently discharge the water to the outside.

  The substrate unit 30 is provided with a notification unit 32 that receives and notifies an output signal from the detection unit 31. On the back surface of the sealing body 20, there is provided a cylindrical portion 23 that stands from the sealing body 20 toward the inside of the housing Y and engages with at least a part of the outer periphery 32 a of the notification portion 32. Moreover, the cylindrical part drainage path 23a which discharges the water which permeated the said cylindrical part 23 is formed along the sealing body 20, and the said cylindrical part drainage path 23a is connected to the 2nd drainage port 23b.

On the outer periphery 32 a of the notification part 32, a protruding part 32 b that engages with the engaging part 23 c of the cylindrical part 23 is formed. One end of the cylindrical part drainage channel 23a is connected to the lower side of the cylindrical part 23, and the other end is connected to the second drainage port 23b. The position where the one end is connected to the lower side of the cylindrical portion 23 may be the lowest position of the cylindrical portion 23 in the installation posture, or may be a position shifted from the lowest position.
In this configuration, the water that has entered the gas alarm device X (cylindrical portion 23) from the speaker opening 24 immediately passes through the cylindrical portion drainage channel 23a and passes through the second drainage port 23b to the outside of the gas alarm device X. Can be discharged.

[Another embodiment 1]
In the embodiment described above, the case where the groove portion B is formed in the main body peripheral edge portion 12a has been described. However, the present invention is not limited thereto, and the groove portion B may be formed on the sealing end portion 21 side.

[Another embodiment 2]
As illustrated in FIG. 6, a transverse water channel 25 that connects the first drain port 22b and the second drain port 23b may be formed so that the housing unit drain channel 22a is connected to the second drain port 23b. In this structure, since the water and CO gas from the accommodating part drainage channel 22a can be discharged from whichever of the first drainage port 22b and the second drainage port 23b is easy to discharge, their discharge efficiency is increased.

  The drainage structure of the electric device of the present invention can be used for an electric device for disaster prevention or crime prevention installed on a wall surface indoors or outdoors.

X Electrical device Y Housing 10 Device body 20 Sealed body 20a First side surface 20b Second side surface 22 Housing portion 22a Housing portion drainage channel 22b First drainage port 22c Stepped portion 23 Tubular portion 23a Tubular portion drainage channel 23b Second drainage Port 30 Substrate part 31 Detection part 32 Notification part 32a

Claims (5)

A housing having a device body and a sealing body covering at least a part of the device body;
A board part provided inside the housing and provided with a detection part for detecting a change in the external environment;
A storage unit that is erected from the sealing body toward the inside of the housing and stores the detection unit;
A drainage structure for an electrical device in which a housing drainage channel for discharging water that has entered the housing is formed along the sealing body.   The drainage structure for an electric device according to claim 1, wherein the housing part drainage channel is connected to a first drainage port formed on a first side surface of the sealing body.   The drainage structure for an electric device according to claim 2, wherein a stepped portion is formed in the lower portion at a connection position between the housing portion drainage channel and the first drainage port.   The drainage structure for an electrical device according to claim 2 or 3, wherein the housing portion drainage channel is connected to a second drainage port formed on a second side surface facing the first side surface. A notification unit for receiving and reporting an output signal from the detection unit;
A cylindrical portion that is erected from the sealing body toward the inside of the housing and engages with at least a part of the outer periphery of the notification portion;
The cylindrical part drainage channel which discharges the water which permeated the said cylindrical part is formed along the said sealing body, The said cylindrical part drainage channel is connected to said 2nd drainage port. Water drainage structure for electrical equipment.

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