JP2017058716A - Alarm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm in which a display panel is properly disposed.SOLUTION: An alarm 1 includes a case body 10 (upper case 12) which includes an opening as a display window 15, substrates 30 and 31 which are stored in the case body 10, a gas sensor 50 and a CO sensor 60 which are mounted on the substrates 30 and 31 and detect a gas to be detected which is an alarm target, a lens part 40 which is disposed in the display window 15 from the inside of the case body 10, and the display panel which is mounted on the substrate 30 through a terminal. The display panel is mounted on the substrate 30, so as to face the display window 15 through the lens part 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an alarm device.

  Conventionally, there is a built-in gas sensor that detects a gas leak and issues an alarm, and a CO sensor that detects carbon monoxide generation and issues an alarm. Alarm devices that detect and issue alarms are known. Since this type of alarm device is installed and used indoors, the aesthetics of its appearance is also an important factor. In view of this, a display panel such as an LCD has been adopted for various status displays relating to an alarm device, which has been rarely used in the past.

  For example, Patent Literature 1 discloses a battery-type alarm device including an LCD display as a display panel. According to this battery-type alarm device, whether the battery remains or the battery is exhausted is displayed on the LCD display according to the battery voltage.

JP 2012-103949 A

  However, Patent Document 1 discloses a specific display method on the display panel, but does not disclose a specific arrangement method of the display panel with respect to the alarm device.

  This invention is made | formed in view of this situation, The objective is to provide the alarm device by which the display panel was arrange | positioned appropriately.

  In order to solve such a problem, the present invention provides a case main body having an opening serving as a display window, a substrate accommodated in the case main body, a sensor mounted on the substrate and detecting a detection target gas to be alarmed. Provided is an alarm device having a lens unit disposed on a display window from the back side of a case body and a display panel mounted on a substrate via a terminal. In this case, the display panel is mounted on the substrate so as to face the display window through the lens unit.

  Further, in the present invention, the lens unit includes a transparent flat plate-shaped lens body, a frame body unit provided on the rear side of the lens body so as to surround the lens body, and a frame body unit side from the frame body unit. And a leg portion that disposes the lens body above the substrate, the display panel is disposed opposite to the back surface of the lens body, and the periphery of the display panel is held by the frame body portion. Is preferred.

  Further, in the present invention, when the installation state of the alarm device is used as a reference, the lens body is arranged in an inclined state so that one of the upper end side and the lower end side protrudes from the other side. It is preferable that the tilted state is set according to the gas to be detected as an alarm target.

  In the present invention, the detected gas to be alarmed includes city gas, and the lens body is inclined so that the upper end side of the lens body protrudes from the lower end side when the installation state of the alarm device is used as a reference. Are preferably arranged.

  In the present invention, the leg portion includes a protrusion formed at the tip of the leg portion, the lens portion press-fits the substrate to fix the entire lens portion, and the outer periphery of the lens body is around the display window. It is preferable to be disposed in contact with the back side of the case body.

  Further, the present invention preferably further includes a battery serving as a power source, and the display on the display panel is switched according to the voltage of the battery.

  According to the present invention, since a display panel can be mounted on an alarm device, various status displays regarding the alarm device can be performed. In addition, by disposing the lens portion on the display window facing the display panel, static electricity can be prevented from jumping in from the display window or liquid water or the like can be prevented from entering. Thereby, in addition to the display panel, the alarm device can be protected.

The front view which shows typically the alarm device concerning this embodiment 1 is an exploded perspective view schematically showing the alarm device shown in FIG. Explanatory drawing showing the board and its mounting components Explanatory drawing showing the configuration of the lens unit Explanatory drawing showing the process of mounting the display panel on the substrate

  FIG. 1 is a front view schematically showing an alarm device 1 according to the present embodiment, and FIG. 2 is an exploded perspective view schematically showing the alarm device 1 shown in FIG. In FIG. 1, the upper side of the paper corresponds to the vertical upper side when the alarm device 1 is installed, and the lower side of the paper corresponds to the lower vertical side when the alarm device 1 is installed. The alarm device 1 according to the present embodiment is an alarm device that performs an alarm for, for example, methane, hydrogen, or carbon monoxide (CO). Detects alarms (such as gas leaks and incomplete combustion of combustion equipment). This alarm device 1 is of a battery type.

  The alarm device 1 is mainly composed of a case body 10, substrates 30 and 31, a gas sensor 50, and a CO sensor 60.

  The case body 10 is a housing that accommodates the substrates 30 and 31, the gas sensor 50, the CO sensor 60, a battery (not shown), and the like. The case body 10 includes a lower case 11 and an upper case 12 that are separable from each other, and a housing is formed by fitting the lower case 11 and the upper case 12 together. When the alarm device 1 is installed, it is fixed to a wall or the like so that the lower case 11 becomes the back surface.

  The lower case 11 is a box-shaped member whose front side is open, and is formed of synthetic resin or the like. The lower case 11 includes a rectangular plate-shaped back surface portion 11a and a rectangular frame-shaped peripheral wall portion 11b erected on the periphery of the back surface portion 11a.

  The upper case 12 is a box-shaped member whose back side is open, and is formed of synthetic resin or the like. The upper case 12 includes a rectangular plate-shaped front portion 12a and a rectangular frame-shaped peripheral wall portion 12b erected on the periphery of the front portion 12a.

  In the upper case 12, a speaker output unit 13, an operation unit 14, a display window 15, and a display unit 16 are disposed on the outer surface (front surface) of the front portion 12 a.

  The speaker output unit 13 includes, for example, a plurality of slits and is formed at a position corresponding to the speaker disposed on the substrate 30.

  The operation unit 14 operates the switch 36 through a pressing operation of the user. Specifically, the operation unit 14 is configured such that a required portion of the upper case 12 can be elastically deformed, and a character notation such as “alarm stop” is formed. The operation unit 14 is formed at a position corresponding to the switch disposed on the substrate 30.

  The display window 15 is configured by an opening in which a part of the upper case 12 is cut out in a rectangular shape, and is formed at a position corresponding to a display panel 37 (see FIG. 3 described later) disposed on the substrate 30. The display window 15 is provided with a lens unit 40 for protecting the display panel 37 and positioning the substrate 30. A method of arranging the display panel 37 using the lens unit 40 will be described later.

  The display unit 16 includes an opening obtained by cutting out a part of the upper case 12 into a vertically long rectangular shape, and is formed at a position corresponding to the plurality of LEDs 35 arranged on the substrate 30. A transparent or translucent plate-like plate that closes the opening is disposed in the opening forming the display unit 16.

  The case body 10 is formed with a slit 17 that is an opening that penetrates the inside and outside of the case body 10. The slits 17 are formed at positions extending from the peripheral wall portion 11b of the lower case 11 and the peripheral wall portion 12b of the upper case 12 to the front surface portion 12a. A plurality of slits 17 are formed along the longitudinal direction of the peripheral wall portions 11b and 12b. In addition, the number of slits 17 formed in the lower case 11 is larger than that in the upper case 12, and the slit forming range of the lower case 11 is wider than that of the upper case 12. These slits 17 function as openings for the atmosphere around the alarm device 1 to flow into the alarm device 1.

  FIG. 3 is an explanatory diagram showing the substrates 30 and 31 and their mounting components. The boards 30 and 31 are printed wiring boards, and a plurality of electronic components in addition to the gas sensor 50 and the CO sensor 60 are mounted by soldering or the like. The substrates 30 and 31 have wiring patterns that are electrically connected to the mounted electronic components to form an electric circuit.

  The substrate 30 is arranged in a state of being parallel or substantially parallel to the back surface portion 11 a of the lower case 11. A CO sensor 60 is mounted on the substrate 30. The CO sensor 60 has a cylindrical outer shape, and is arranged so that its longitudinal direction (axial direction of the cylindrical body) is parallel to the substrate 30. In other words, the CO sensor 60 is disposed horizontally in the lower case 11 (case body 10).

  A plurality of LEDs 35, a switch 36, a display panel 37, a speaker (not shown), a microcomputer (not shown), and the like are mounted on the substrate 30.

  The plurality of LEDs 35 are composed of, for example, three LEDs corresponding to red, yellow, and green. These LEDs 35 are controlled by a microcomputer and output an alarm from the gas sensor 50 and the CO sensor 60 or output a warning state.

  The switch 36 instructs the microcomputer to start the inspection operation or instructs the microcomputer to stop the alarm.

  The display panel 37 is an LCD panel, for example. The display panel 37 is mounted on the substrate 30 via terminals 37a. The display panel 37 is controlled by the microcomputer and displays the battery state.

  The speaker is controlled by the microcomputer and outputs an alarm from the gas sensor 50 and the CO sensor 60.

  The microcomputer controls the alarm device 1 and controls the LED 35 and the speaker based on detection signals output from the gas sensor 50 and the CO sensor 60 to give an alarm.

  On the other hand, the board | substrate 31 is arrange | positioned in the state orthogonal or substantially orthogonal with respect to the back surface part 11a of the lower case 11. FIG. A gas sensor 50 is mounted on the substrate 31. The gas sensor 50 has a cylindrical outer shape and is arranged so that its longitudinal direction (axial direction of the cylindrical body) is perpendicular to the substrate 30. For this reason, the gas sensor 50 is arranged horizontally in the lower case 11 (case body 10), like the CO sensor 60.

  The gas sensor 50 is, for example, a contact combustion type gas sensor. The gas sensor 50 detects the concentration of methane contained in the atmosphere flowing into the case main body 10 from the slit 17 and outputs a detection signal corresponding to the concentration to the macro computer. As the gas sensor 50, a known gas sensor such as a semiconductor gas sensor can be used.

  The gas sensor 50 includes a cylindrical sensor main body 50a and a detection unit 50b that is disposed at one end of the sensor main body 50a and detects a gas to be detected. The gas sensor 50 is disposed in the case body 10 in a sideways state (a state parallel to the back surface portion 11a and the front surface portion 12a).

  The CO sensor 60 is, for example, an electrochemical CO sensor. The CO sensor 60 detects the concentration of carbon monoxide contained in the atmosphere flowing into the case main body 10 from the slit 17 and outputs a detection signal corresponding to the concentration to the microcomputer.

  The CO sensor 60 includes a cylindrical sensor main body 60a and a detection unit 60b that is disposed at one end of the sensor main body 60a and detects a gas to be detected. The CO sensor 60 is disposed in the case body 10 in a sideways state (a state parallel to the back surface portion 11a and the front surface portion 12a).

  Hereinafter, an arrangement method of the display panel 37 using the lens unit 40, which is one of the features according to the present embodiment, will be described. A display window 15 having an opening is formed in the case main body 10 (upper case 12) of the present embodiment. In the display window 15, a lens portion 40 is disposed from the inside of the case body 10, that is, from the back side of the upper case 12. The display panel 37 is mounted on the substrate 30 so as to face the display window 15 through the lens unit 40.

  FIG. 4 is an explanatory diagram showing the configuration of the lens unit 40. In the same figure, (a) is a perspective view of the lens unit 40, (b) is a front view of the lens unit 40 shown in (a), (c) is a right side view of the lens unit 40 shown in (a), (D) is a rear view of the lens part 40 shown to (a). The lens unit 40 includes a lens body 41, a frame body unit 42, and a leg unit 43, and is integrally formed of a transparent synthetic resin or the like.

  The lens body 41 has a rectangular flat plate shape. The central portion 41a of the lens body 41 is formed in a trapezoidal shape so as to be thicker than the outer peripheral portion 41b. The central portion 41 a is set to a rectangular shape corresponding to the display window 15.

  The frame body portion 42 is erected on the back side of the lens body 41 so as to surround the lens body 41 at the peripheral edge thereof.

  The leg portion 43 extends from the frame body portion 42 toward the substrate 30 side, and is a leg portion that disposes the lens body 41 above the substrate 30. In this embodiment, the leg part 43 is provided in two places corresponding to the upper and lower sides of the lens part 40 when the installation state of the alarm device 1 is used as a reference.

  Of the upper and lower legs 43, the upper legs 43 are set longer than the lower legs 43. Further, a protrusion 43 a is formed at the tip of each leg portion 43.

  In the lens part 40 having such a configuration, the protrusion 43a of the leg part 43 is press-fitted into the substrate 30 to fix the entire lens part 40. In this case, the display panel 37 is set on the back side of the lens unit 40. Specifically, the display panel 37 is disposed to face the back surface of the lens body 41, and the periphery of the display panel 37 is held by the frame body portion 42.

  Here, of the upper and lower leg portions 43, the upper leg portion 43 is set longer than the lower leg portion 43. For this reason, as shown in FIG. 3, in the lens unit 40 mounted on the substrate 30, the lens body 41 is disposed with an inclination of an angle θ (for example, 10 °) so that the upper end side protrudes from the lower end side. ing.

  In the state where the substrate 30 is accommodated in the case body 10, the outer peripheral portion 41 b of the lens body 41 is disposed in contact with the back side of the case body 10 around the display window 15. In this case, the central portion 41 a of the lens body 41 fits with the display window 15. As a result, the central portion 41 a of the lens body 41 is exposed to the outside of the case body 10, and the display panel 37 faces the outside through the lens body 41.

  FIG. 5 is an explanatory diagram showing a process of mounting the display panel 37 on the substrate 30. Hereinafter, the manufacturing method of the alarm device 1 centering on the process of mounting the display panel 37 on the substrate 30 will be described. First, the display panel 37 is accommodated on the back side of the lens unit 40. That is, the display panel 37 is disposed in contact with the back surface of the lens body 41 and the periphery of the display panel 37 is held by the frame body portion 42.

  Next, the protrusion 43 a of the leg portion 43 is press-fitted into the substrate 30, and the lens portion 40 is fixed to the substrate 30. At this time, the display panel 37 is set on the back side of the lens unit 40. For this reason, the display panel 37 is also disposed at a required position on the substrate 30, and the terminal 37 a of the display panel 37 is inserted into the through hole 30 b of the substrate 30. Then, the terminal 37 a of the display panel 37 is soldered to the substrate 30.

  In the lens unit 40 mounted on the substrate 30, the lens body 41 is inclined by an angle θ so that the upper end side protrudes from the lower end side. For this reason, the display panel 37 disposed to face the back side of the lens body 41 is also mounted on the substrate 30 in an inclined state by an angle θ, as with the lens body 41. Thus, the lens unit 40 has a function as a jig for mounting the display panel 37 on the substrate 30 while positioning the display panel 37 with respect to the substrate 30.

  When all the electronic components are mounted on the substrates 30 and 31, the substrates 30 and 31 are accommodated in the lower case 11, and the lower case 11 and the upper case 12 are fitted to each other. The substrates 30 and 31 are accommodated therein. In this case, the outer peripheral portion 41 b of the lens body 41 is disposed in contact with the back side of the case body 10 around the display window 15, and the central portion 41 a of the lens body 41 fits with the display window 15. As a result, the central portion 41 a of the lens body 41 is exposed to the outside of the case body 10, and the display panel 37 faces the outside through the lens body 41.

  In the alarm device 1 manufactured by such a process, the display panel 37 displays that the battery serving as the power source of the alarm device 1 has run out. Specifically, when the voltage of the battery is equal to or higher than a predetermined voltage for determining whether the battery is dead, the display panel 37 displays that there is a battery. The display panel 37 performs, for example, a black solid display of a symbol corresponding to the shape of the battery.

  On the other hand, when the battery voltage becomes less than the predetermined voltage, the black solid display on the display panel 37 is lost. For this reason, light is transmitted, and printing indicating that the battery has run out can be visually recognized. The user can grasp the battery exhaustion by visually recognizing this printing.

  In this embodiment, the alarm device 1 includes the case main body 10 (upper case 12) having an opening to be the display window 15, the substrates 30 and 31 accommodated in the case main body 10, and the substrates 30 and 31. The gas sensor 50 and the CO sensor 60 that are mounted and detect the gas to be detected that is an alarm target, the lens unit 40 disposed in the display window 15 from the inside of the case body 10, and the substrate 30 are mounted on the substrate 30 via the terminals 37a. Display panel 37. The display panel 37 is mounted on the substrate 30 so as to face the display window 15 through the lens unit 40.

  According to this configuration, since the display panel 37 can be mounted on the alarm device 1, various status displays regarding the alarm device 1 can be performed. Further, by disposing the lens unit 40 in the display window 15 that the display panel 37 faces, it is possible to prevent static electricity from jumping in from the display window 15 or liquid water or the like from entering. Thereby, in addition to the display panel 37, the alarm device 1 can be protected.

  Further, in the present embodiment, the lens unit 40 includes a transparent flat plate-shaped lens body 41, a frame body unit 42 provided on the back side of the lens body 41 so as to surround the lens body, A leg portion 43 that extends from the frame body portion 42 toward the substrate 30 side and disposes the lens body 41 above the substrate 30. In the lens unit 40, the display panel 37 is disposed opposite to the back surface of the lens body 41, and the periphery of the display panel 37 is held by the frame body unit 42.

  According to this configuration, the display panel 37 is held by the lens main body 41 and the frame body portion 42 by housing the display panel 37 on the back side of the lens portion 40. Therefore, the display panel 37 can be positioned on the substrate 30 by attaching the lens unit 40 to the substrate 30 with the display unit 37 held on the lens unit 40. That is, the lens unit 40 can be used as a jig.

  In addition, in this embodiment, since it is necessary to mount the display panel 37 on the substrate 30 in an inclined state, it is difficult to ensure the positional accuracy when the display panel 37 is mounted on the substrate 30 alone. However, since the lens unit 40 can be used as a jig, the display panel 37 can be mounted on the substrate 30 with high positional accuracy. Moreover, after attaching the lens part 40 to the board | substrate 30, as mentioned above, the function which protects the display panel 37 by the lens part 40 can be obtained.

  Moreover, in the alarm device 1 of this embodiment, the to-be-detected gas used as a warning object contains city gas. In this case, when the installation state of the alarm device 1 is used as a reference, the lens body 41 is disposed so as to be inclined by an angle θ so that the upper end side of the lens body 41 protrudes from the lower end side thereof.

  According to this configuration, since the lens body 41 is set in an inclined state, the display panel 37 disposed on the rear side is also disposed in an inclined state along the lens unit 40. Since the alarm device 1 corresponding to city gas is arranged on the wall surface near the ceiling, when the user visually recognizes the alarm device 1, the alarm device 1 looks up. Therefore, when the display panel 37 is arranged in a plane in accordance with the surface state of the front surface of the case body 10, there is a possibility that the display content cannot be visually recognized depending on the viewing angle of the display panel 37. In this regard, according to the present embodiment, since the display panel 37 is disposed in a downwardly inclined state according to the orientation of the lens body 41, even when the alarm device 1 is viewed as if looking up, Regardless of the viewing angle of the display panel 37, the display content can be appropriately viewed.

  But the lens main body 41 should just be arrange | positioned in the state inclined so that one of the upper end side and the lower end side might protrude rather than the other, and the inclined state of the lens main body 41 is the to-be-detected gas used as a warning object. It is preferable to set according to. For example, in the case of LP gas, since the alarm device 1 is disposed on the wall surface near the floor surface, when the lens body 41 is based on the installation state of the alarm device 1, the lower end side of the lens body 41 is more than the upper end side. It is arranged so as to be inclined so as to protrude.

  Further, in the present embodiment, the leg portion 43 includes a protrusion 43 a formed at the tip of the leg portion 43. In this case, in the lens unit 40, the protrusion 43 a is press-fitted into the substrate 30 to fix the entire lens unit 40, and the outer peripheral part of the lens body 41 is disposed in contact with the back side of the case body 10 around the display window 15. .

  According to this configuration, since the lens unit 40 is fixed to the substrate 30, it is not necessary to fix the lens unit 40 to the case body 10. For this reason, since it is not necessary to perform fixing work, such as welding the lens part 40 to the case main body 10, the manufacturing process can be simplified and the cost can be reduced.

  Further, although the display panel 37 is disposed in the lens unit 40, these are not in a fixed state. Similarly, the lens unit 40 and the case main body 10 are in contact with each other, but they are not in a fixed state. As described above, since these three members are not fixed to each other and the display panel 37 is in a free state, the display panel can be operated even when an impact is applied to the alarm device 1 due to dropping or the like. 37 can be protected appropriately. Moreover, although the lens part 40 may be cracked by thermal stress, it is suppressed that the influence of the damage of the lens part 40 acts on the display panel 37 because the display panel 37 is made free. can do. Further, the display panel 37 is connected to the substrate 30 by a terminal 37a. For this reason, by setting the display panel 37 in a free state, shock absorption can be performed through the elastic action of the terminal 37a. Thereby, the display panel 37 can be protected appropriately.

  Moreover, in this embodiment, the display panel 37 switches the display of the display panel 37 according to the voltage of a battery.

  In the battery-type alarm device 1, it is preferable to be able to check the state of battery exhaustion. However, according to this configuration, the display panel 37 displays according to the state of the battery. Can do.

  The alarm device according to this embodiment has been described above, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the invention. For example, in the above-described embodiment, an alarm device including a gas sensor or a CO sensor is shown. However, the gas to be detected is not limited to this, and the alarm device includes a plurality of sensors each detecting a predetermined gas in the atmosphere. It only has to have.

DESCRIPTION OF SYMBOLS 1 Alarm device 10 Case main body 11 Lower case 11a Back part 11b Perimeter wall part 12 Upper case 12a Front part 12b Perimeter wall part 15 Display window 17 Slit 30 Substrate 30b Through hole 31 Substrate 35 LED
37 Display panel 37a Terminal 40 Lens part 41 Lens body 41a Central part 41b Outer part 42 Frame part 43 Leg part 43a Projection 50 Gas sensor 60 CO sensor

Claims (6)

A case body having an opening to be a display window;
A substrate housed in the case body;
A sensor that is mounted on the substrate and detects a gas to be detected that is an alarm target;
A lens portion disposed on the display window from the back side of the case body;
A display panel mounted on the substrate via a terminal,
The alarm panel, wherein the display panel is mounted on the substrate so as to face the display window through the lens portion. The lens part is
A transparent flat lens body;
On the back side of the lens body, a frame body portion standing on the periphery so as to surround the lens body;
A leg portion extending from the frame body portion toward the substrate side and disposing the lens body above the substrate;
2. The alarm device according to claim 1, wherein the display panel is disposed opposite to the back surface of the lens body, and the periphery of the display panel is held by the frame body portion. When the installation state of the alarm is used as a reference, the lens body is arranged in an inclined state so that one of the upper end side and the lower end side protrudes from the other side,
3. The alarm device according to claim 2, wherein the tilted state of the lens body is set in accordance with a gas to be detected as the alarm target. The detection target gas to be alarmed includes city gas,
The alarm device according to claim 3, wherein the lens body is arranged so as to be inclined such that an upper end side of the lens body protrudes from a lower end side thereof. The leg includes a protrusion formed at the tip of the leg,
The lens portion is fixed in a state in which the protrusion is press-fitted into the substrate, and an outer peripheral portion of the lens body is disposed in contact with a back side of a case body around the display window. The alarm device described in Item 2. The battery further serves as a power source,
The alarm device according to any one of claims 1 to 4, wherein the display on the display panel is switched according to the voltage of the battery.

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