JP7008542B2 - Battery-powered equipment - Google Patents

Description

The present invention includes a battery that supplies electric power, an operating unit that operates by consuming the electric power supplied from the battery, and a display unit that can change the information to be displayed by consuming the electric power supplied from the battery. The present invention relates to a battery-powered device provided with a housing.

Patent Document 1 (Japanese Unexamined Patent Publication No. 10-283582) describes a battery-powered alarm device. As an advantage of such a battery-powered alarm device, it can be applied when it is required to install an alarm device in an installation location where connection wiring with a commercial AC power supply is difficult or where aesthetics are important. The point is that.

Battery-powered equipment has the advantage of increasing the degree of freedom in the installation location, but it has a limited battery capacity, so it is required to reduce power consumption. In particular, lamps such as LEDs, which are often used in display units that display various information, have a problem that they consume a large amount of power when mounted on battery-powered devices.

Therefore, a magnetic reversal type display as described in Patent Document 2 (Japanese Patent Publication No. 59-20281) may be used. This magnetically inverted display is opposed to a display disk supported to be inverted, a permanent magnet provided around the inversion axis of the display disk so as to be inverted with the display disk, and the permanent magnet. It has a magnetic pole at the position where it is located, and has an electromagnet device capable of reversing its polarity. Then, a current is passed through the coil of the electromagnet device to invert the polarity of the magnetic pole, and the permanent magnet and the display disk are inverted around the inversion axis to change the display. As described above, the magnetic inversion type display has an advantage that it does not consume power except during the inversion operation.

Japanese Unexamined Patent Publication No. 10-283582 Jikkai Sho 59-20281

However, the magnetic reversal type display described in Patent Document 2 has a problem that it is expensive because it uses a permanent magnet.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a battery-powered device having low power consumption and low cost.

The characteristic configuration of the battery-powered device according to the present invention for achieving the above object is a battery that supplies electric power and a battery.
An operating unit that operates by consuming the electric power supplied from the battery,
A battery-powered device having a housing having a display unit capable of changing information to be displayed by consuming the electric power supplied from the battery.
The display unit is
The display window formed in the housing and
A movable member having a display surface having a predetermined color and / or pattern, and movable through a portion of the housing facing the display window.
The movable member is switched from the first lockable state in which the movable member can be locked at the initial position above the display window in the housing to the first lockable state in which the movable member cannot be locked at the initial position. The first locking part that can be
From the second lockable state in which the movable member can be locked at an intermediate position below the initial position in the housing and facing the display window, the movable member cannot be locked at the intermediate position. It has a second locking part that can switch to an impossible state,
The display information of the display unit represented by the color or pattern visible from the outside of the housing to the display window or both thereof is such that the movable member is locked at the initial position by the first locking unit. The first state, the second state in which the movable member is not locked to the first locking portion and is locked at the intermediate position by the second locking portion, and the movable member is in the first engagement. Since it is not locked from either the stop portion or the second locking portion, it changes in order during the transition to the third state at the drop position below the intermediate position.
Inside the housing, a pair of connection terminals to which the positive and negative electrodes of the battery are electrically connected in use,
In the unused state, a part of the battery protrudes to the outside of the housing, and another part of the battery is electrically insulated between one of the positive and negative electrodes of the battery and the connection terminal. Equipped with an insulator that has been
By pulling out the insulator toward the outside of the housing, the positive electrode and the negative electrode of the battery and the pair of connection terminals are electrically connected, and power is supplied from the battery to the operating unit and the display unit. Is configured to be supplied,
The first locking portion is configured to have the insulator, and in the first lockable state, the movable member can be supported from below by yet another part of the insulator in the unused state. The first lockable state is a state in which the movable member cannot be supported from below by yet another part of the insulator in the use state.
The second locking portion has a second conductor that can receive electric power from the battery and is fused by Joule heat generated by energization, and the second locking state is the second conductor. Is not fused, and the second non-lockable state is a state in which the second conductor is fused .

According to the above feature configuration, the inside of the housing can be seen from the outside of the housing through the display window. Further, when the movable member is located at an intermediate position facing the display window inside the housing, the display surface of the movable member can be seen in the display window. Therefore, the display information of the display unit represented by the color or pattern visible on the display window from the outside of the housing or both of them is that the movable member is in the initial position above the display window, so that the display information of the housing can be obtained through the display window. From the state where the inside can be seen (first state), the state where the display surface of the movable member can be seen because the movable member is in the intermediate position facing the display window (second state), and the state where the movable member is below the display window. By being in the drop position, the inside of the housing can be seen through the display window (third state) in order. Further, since the falling movement of the movable member that causes a change in the display information of the display unit from the initial position to the intermediate position and the falling position is performed by gravity, a large amount of electric power is not consumed for the movement.
Further, the first locking portion is configured to change from the first lockable state to the first lockable state by pulling out the insulator toward the outside of the housing by the user. The first lockable state and the first lockable state can be maintained without consuming electric power. Further, the second locking portion consumes power only when transitioning from the second lockable state to the second lockable state, and otherwise consumes no power in the second lockable state and the second lockable state. The second lockable state can be maintained.
In addition, the first locking portion is realized by a simple structure in which a movable member is locked by an insulator, and when the insulator is pulled out toward the outside of the housing, the movable member cannot be locked. Further, the second locking portion is realized by a simple structure in which the movable member is locked by the second conductor that has not been blown, and the movable member cannot be locked when the second conductor is blown.
Therefore, it is possible to provide a battery-powered device with low power consumption and low cost.

The characteristic configuration of the battery-powered device according to the present invention for achieving the above object is a battery that supplies electric power and a battery.
An operating unit that operates by consuming the electric power supplied from the battery,
A battery-powered device having a housing having a display unit capable of changing information to be displayed by consuming the electric power supplied from the battery.
The display unit is
The display window formed in the housing and
A movable member having a display surface having a predetermined color and / or pattern, and movable through a portion of the housing facing the display window.
The movable member is switched from the first lockable state in which the movable member can be locked at the initial position above the display window in the housing to the first lockable state in which the movable member cannot be locked at the initial position. The first locking part that can be
From the second lockable state in which the movable member can be locked at an intermediate position below the initial position in the housing and facing the display window, the movable member cannot be locked at the intermediate position. It has a second locking part that can switch to an impossible state,
The display information of the display unit represented by the color or pattern visible from the outside of the housing to the display window or both thereof is such that the movable member is locked at the initial position by the first locking unit. The first state, the second state in which the movable member is not locked to the first locking portion and is locked at the intermediate position by the second locking portion, and the movable member is in the first engagement. Since it is not locked from either the stop portion or the second locking portion, it changes in order during the transition to the third state at the drop position below the intermediate position.
After the power-on operation is performed from an unused state in which the power-on operation has not yet been performed, in response to the power-on operation for moving the power switch exposed to the outside of the housing. It is configured to transition to the used state,
The first locking portion is configured to have a support provided inside the housing, and in the first lockable state, the movable member is moved from below by the support in the unused state. In the first lockable state, the movable member is supported by the support from below by moving the support in conjunction with the movement of the power switch accompanying the power-on operation. It is in a state where it will not be done
The second locking portion has a second conductor that can receive electric power from the battery and is fused by Joule heat generated by energization, and the second locking state is the second conductor. Is not fused, and the second non-lockable state is a state in which the second conductor is fused.

According to the above feature configuration, the inside of the housing can be seen from the outside of the housing through the display window. Further, when the movable member is located at an intermediate position facing the display window inside the housing, the display surface of the movable member can be seen in the display window. Therefore, the display information of the display unit represented by the color or pattern visible on the display window from the outside of the housing or both of them is that the movable member is in the initial position above the display window, so that the display information of the housing can be obtained through the display window. From the state where the inside can be seen (first state), the state where the display surface of the movable member can be seen because the movable member is in the intermediate position facing the display window (second state), and the state where the movable member is below the display window. By being in the drop position, the inside of the housing can be seen through the display window (third state) in order. Further, since the falling movement of the movable member that causes a change in the display information of the display unit from the initial position to the intermediate position and the falling position is performed by gravity, a large amount of electric power is not consumed for the movement.
Further, the first locking portion is configured to change from the first lockable state to the first lockable state in conjunction with the movement of the power switch accompanying the power-on operation by the user. The first lockable state and the first lockable state can be maintained without consuming. Further, the second locking portion consumes power only when transitioning from the second lockable state to the second lockable state, and otherwise consumes no power in the second lockable state and the second lockable state. The second lockable state can be maintained.
In addition, the first locking portion locks the movable member with the support when the power switch is not turned on, and the support is linked to the power switch when the power is turned on. It is realized by a simple structure that the movable member cannot be locked by moving. Further, the second locking portion is realized by a simple structure in which the movable member is locked by the second conductor that has not been blown, and the movable member cannot be locked when the second conductor is blown.
Therefore, it is possible to provide a battery-powered device with low power consumption and low cost.

Yet another characteristic configuration of the battery-powered device according to the present invention is that the movable member is
When power is not supplied from the battery in the unused state, it is the first state.
When the power is supplied from the battery to change from the unused state to the used state, the state transitions to the second state.
When the remaining capacity of the battery drops to a predetermined lower limit, the state transitions to the third state.

According to the above feature configuration, when power is not supplied from the battery in the unused state (first state), the movable member cannot be seen from the display window and the inside of the housing can be seen. Further, when the power is supplied from the battery to change from the unused state to the used state (second state), the display surface of the movable member can be seen from the display window. Furthermore, when the remaining capacity of the battery drops to a predetermined lower limit value (third state), the inside of the housing can be seen without seeing the movable member from the display window. That is, when the movable member is put into use by being supplied with electric power from the battery (second state), the display surface of the movable member can be seen from the outside of the housing, so that the color or pattern attached to the display surface of the movable member can be seen. Alternatively, both of them can be recognized by the user as information indicating that the device is in operation.
In addition, the display information on the display unit when the device is unused and when the remaining capacity of the battery drops to a predetermined lower limit is the same as each other when the inside of the housing can be seen through the display window. The display information of the display unit in the case of is different from the display information of the display unit (state in which the display surface of the movable member can be seen) when the device is in use. Therefore, when the remaining capacity of the battery drops to a predetermined lower limit value, the user can be made to recognize that the operation of the device is not normal.

Yet another characteristic configuration of the battery-powered device according to the present invention is that the operating unit includes a fire detection sensor, a gas leak detection sensor, and at least two or more detection sensors among carbon monoxide detection sensors. It is a point to have and be composed.

According to the above-mentioned feature configuration, at least a plurality of abnormalities among the occurrence of fire, the occurrence of gas leakage, and the increase of carbon monoxide concentration detected by the detection sensor of the moving unit can be notified to the outside.

It is a perspective view of the battery-powered device of 1st Embodiment. It is a figure explaining the structure of the battery-powered apparatus of 1st Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 1st Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 1st Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 1st Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 2nd Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 2nd Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 2nd Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 3rd Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 3rd Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 3rd Embodiment. It is a perspective view of the battery-powered device of 4th Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 4th Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 4th Embodiment. It is a figure which shows the structural example of the display part of the battery-powered device of 4th Embodiment.

<First Embodiment>
The battery-powered device according to the first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of the battery-powered device of the first embodiment. FIG. 2 is a diagram illustrating a configuration of a battery-powered device. In this embodiment, the alarm device A is shown as an example of a battery-powered device. As shown in the figure, the battery-powered alarm device A consumes the battery B that supplies electric power, the operating unit C that operates by consuming the electric power supplied from the battery B, and the electric power supplied from the battery B. The housing 1 is provided with a display unit D capable of changing the information to be displayed. The operation unit C has a control unit 3, a detection sensor 4, and a voice output unit 5. In the present embodiment, the shape of the housing 1 is rectangular when viewed from the front surface 1a of the housing 1.

The detection sensor 4 includes, for example, a gas detection sensor and a sensor such as a CO (carbon monoxide) detection sensor. The detection result of the detection sensor 4 is transmitted to the control unit 3.

For example, when the detection target is city gas, the gas detection sensor is configured by using a methane gas detection sensor for detecting the concentration of methane gas (CH ₄ ), which is the main component of city gas. When another gas is to be detected, a sensor capable of detecting the gas may be used. Then, the control unit 3 determines whether or not a gas leak has occurred (that is, whether or not the gas concentration to be detected is at or above a predetermined level) based on the detection result transmitted from the gas detection sensor. do.

The CO detection sensor is configured by using a gas sensor for detecting the concentration of carbon monoxide gas (CO). Then, the control unit 3 determines whether or not the concentration of carbon monoxide is at a predetermined level or higher based on the detection result transmitted from the CO detection sensor.

An audio output unit 5 is also provided inside the housing 1. The audio output unit 5 is realized by using a speaker or the like capable of outputting audio. The sound output from the sound output unit 5 under the control of the control unit 3 is emitted to the outside of the housing 1 through the sound hole 9 provided in the front surface 1a of the housing 1.

As the display unit D provided on the front surface 1a of the housing 1, there are a display window 6, a CO lamp 7, and a gas lamp 8. Further, the housing 1 allows gas to flow between the outside and the inside of the housing 1, and CO, methane gas, etc. existing outside the housing 1 are gas detection sensors inside the housing 1. A ventilation hole (not shown) is provided so as to reach (detection sensor 4). On the front surface 1a of the housing 1, the letters "CO" are written on the CO lamp 7, and the letters "gas" are written on the gas lamp 8. As a result, the user can know which lamp represents what information. Each lamp is realized by using an LED or the like, and operates according to the control by the control unit 3.

For example, the control unit 3 causes an alarm display such that the CO lamp 7 is turned on or blinks when it is determined that CO having a concentration equal to or higher than a predetermined value is detected based on the detection result of the CO detection sensor (detection sensor 4). If only CO having a concentration lower than the predetermined value is detected, the CO lamp 7 is turned off. Further, the control unit 3 may output a voice for notifying the abnormality of the CO concentration from the voice output unit 5.

Further, the control unit 3 causes an alarm display such that the gas lamp 8 is turned on or blinks when it is determined that methane having a concentration equal to or higher than a predetermined value is detected based on the detection result of the gas detection sensor (detection sensor 4). If only methane having a concentration lower than the predetermined value is detected, the gas lamp 8 is turned off. Further, the control unit 3 may output a voice for notifying the abnormality of the gas (methane) concentration from the voice output unit 5.

A hooking portion 2 having a screw hole is provided on the top surface 1c of the housing 1. In particular, the hooking portion 2 is provided near the boundary between the top surface 1c and the back surface. Therefore, normally, in the alarm device A of the present embodiment, the screw hole of the hooking portion 2 is hooked on a protrusion such as a screw provided on the wall surface, that is, the back surface of the housing 1 is the installation location. It is installed facing the wall surface.

All the electric power consumed by the control unit 3, the detection sensor 4, the voice output unit 5, and the display unit D included in the alarm device A is supplied from the battery B. However, the power supply from the battery B to the control unit 3, the detection sensor 4, the voice output unit 5, and the display unit D is started after the user issues an activation command for the alarm device A by the activation command reception unit SW. Power is not supplied while the user has not issued an activation command for the alarm device A by the activation command reception unit SW. In the present embodiment, the activation command receiving unit SW is a power switch 18 exposed to the outside on the side surface 1b of the housing 1. Then, in response to the power-on operation for moving the power switch 18, the alarm device A changes from an unused state in which the power-on operation has not yet been performed to a used state after the power-on operation has been performed. Configured to migrate.

The display window 6 is an opening formed in the front surface 1a of the housing 1. Therefore, from the outside of the housing 1, the inside of the housing 1 can be seen through the display window 6. The movable member 10 has a display surface having a predetermined color and / or pattern, and is configured to be movable in the housing 1 through a portion facing the display window 6. For example, when the movable member 10 is located in the portion of the display window 6 inside the housing 1, the display window 6 can see a predetermined color or pattern or both of them attached to the display surface of the movable member 10. ..

The first locking portion L1 cannot lock the movable member 10 at the initial position from the first lockable state in which the movable member 10 can be locked at the initial position above the display window 6 in the housing 1. 1 It is configured so that it can be switched to the lockable state. The second locking portion L2 sets the movable member 10 at the intermediate position from the second lockable state in which the movable member 10 can be locked at the intermediate position below the initial position in the housing 1 and facing the display window 6. It is configured to be able to switch to the second lockable state that cannot be locked.

3 to 5 are diagrams showing a configuration example of the display unit D of the battery-powered alarm device A of the first embodiment. The left figure of FIG. 3, the left figure of FIG. 4, and the left figure of FIG. 5 are views seen from the outside of the housing 1, and the right figure of FIG. 3, the right figure of FIG. 4, and the right figure of FIG. 5 are the housings. It is a figure seen from the inside of 1.
As shown in the figure, the first locking portion L1 has a first conductor 11c that can receive electric power from the battery B and is fused by Joule heat generated by energization. The first conductor 11c is connected between the terminals 11a and 11b, and the control unit 3 can control the current flowing between the terminals 11a and 11b. The second locking portion L2 has a second conductor 12c that can receive electric power from the battery B and is fused by Joule heat generated by energization. The second conductor 12c is connected between the terminal 12a and the terminal 12b, and the control unit 3 can control the current flowing between the terminal 12a and the terminal 12b. The first conductor 11c and the second conductor 12c are configured by using the same material as, for example, a power fuse.

The surface (display surface) of the movable member 10, that is, the surface facing the outside of the housing 1, is provided with a predetermined color and / or pattern. A protrusion-shaped locked portion 10a is provided on the back surface of the movable member 10, that is, on the upper end of the surface facing the inside of the housing 1.

When the first conductor 11c of the first locking portion L1 is in a state where the locked portion 10a of the movable member 10 is locked by the unfused first conductor 11c, the movable member 10 is positioned at the initial position. It is designed to have a length that allows it to be used. This initial position is above the display window 6, and when the display window 6 is viewed from the outside of the housing 1, the movable member 10 at the initial position does not appear in the display window 6. As a result, when the movable member 10 is in the initial position, the color attached to the inside of the housing 1 can be seen from the display window 6.

When the second conductor 12c of the second locking portion L2 is in a state where the locked portion 10a of the movable member 10 is locked by the unfused second conductor 12c, the movable member 10 is positioned at an intermediate position. It is designed to have a length that allows it to be used. This intermediate position is at the same height as the display window 6, and when the display window 6 is viewed from the outside of the housing 1, the movable member 10 at the intermediate position appears in the display window 6. As a result, when the movable member 10 is in the intermediate position, a predetermined color or pattern or a predetermined color or pattern attached to the surface (display surface) of the movable member 10 from the display window 6, that is, the surface facing the outside of the housing 1. Both appear.

[First state]
FIG. 3 shows the movable member 10 in the first state.
The first lockable state of the first locking portion L1 is a state in which the movable member 10 can be locked at the initial position in the housing 1 because the first conductor 11c is not fused. That is, when the movable member 10 is locked by the unfused first conductor 11c, the movable member 10 is in the initial position in the housing 1. The state in which the movable member 10 is locked at the initial position by the first locking portion L1 in the first lockable state is defined as the first state.

The control unit 3 cannot operate when power is not supplied from the battery B in an unused state. Therefore, the movable member 10 is locked at the initial position by the first locking portion L1 in the first lockable state (first state).

In the first state, since the movable member 10 is located at a position higher than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the first state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the first state is “black”.

[Second state]
FIG. 4 shows the movable member 10 in the second state.
The first lockable state of the first locking portion L1 is a state in which the movable member 10 cannot be locked because the first conductor 11c is fused. That is, since the movable member 10 cannot be locked by the first conductor 11c of the first locking portion L1, the movable member 10 moves toward the second locking portion L2 below the first locking portion L1. And fall. Further, in the second lockable state of the second locking portion L2, the movable member 10 is placed at a predetermined intermediate position below the initial position in the housing 1 because the second conductor 12c is not blown. It is in a state where it can be locked. That is, the movable member 10 is not locked by the first conductor 11c of the first locking portion L1 that is fused, and the movable member 10 is not locked by the second conductor 12c of the second locking portion L2 that is not fused. Is locked, the movable member 10 is in an intermediate position. The state in which the movable member 10 is not locked to the first locking portion L1 and is locked at the intermediate position by the second locking portion L2 is defined as the second state.

The control unit 3 controls the current flowing between the terminals 11a and 11b when the electric power is supplied from the battery B to change from the unused state to the used state, and the first conductor 11c is energized. Fusing. As a result, the movable member 10 that was in the initial position is not locked by the first conductor 11c and falls, and is locked in the intermediate position by the second locking portion L2 (second state).

In the second state, since the movable member 10 is at the same height as the portion of the display window 6, the movable member 10 can be seen from the outside of the housing 1. Therefore, in the second state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern of the display surface of the movable member 10 or theirs. Determined by both. In the present embodiment, since the display surface of the movable member 10 is, for example, white, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the second state is “white”.

[Third state]
FIG. 5 shows the movable member 10 in the third state.
The second lockable state of the second locking portion L2 is a state in which the movable member 10 cannot be locked because the second conductor 12c is fused. That is, since the movable member 10 cannot be locked by the second conductor 12c of the second locking portion L2, the movable member 10 falls below the second locking portion L2. That is, the movable member 10 is not locked by the first conductor 11c of the first locking portion L1 that is fused, and the movable member 10 is not locked by the second conductor 12c of the second locking portion L2 that is fused. When is not locked, the movable member 10 is in a drop position below the intermediate position. The state in which the movable member 10 is not locked by either the first locking portion L1 or the second locking portion L2 and is in the falling position below the intermediate position is defined as the third state. ..

When the remaining capacity of the battery B drops to a predetermined lower limit value, the control unit 3 controls the current flowing between the terminals 12a and 12b, and melts the second conductor 12c by energization. As a result, the movable member 10 that was in the intermediate position is not locked by the second conductor 12c and falls, and moves to the drop position below the intermediate position (third state). The control unit 3 can recognize the remaining capacity of the battery B using, for example, the battery voltage as an index.

In the third state, since the movable member 10 is located at a position lower than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the third state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the third state is “black”.

As described above, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both of them is such that the movable member 10 is in the initial position above the display window 6. As a result, from the state where the inside of the housing 1 can be seen through the display window 6 (first state), the display surface of the movable member 10 can be seen because the movable member 10 is in the intermediate position facing the display window 6 (second state). ), And the movable member 10 is in a drop position below the display window 6, so that the inside of the housing 1 can be seen through the display window 6 (third state) in order. Further, since the falling movement of the movable member 10 that causes a change in the display information of the display unit D from the initial position to the intermediate position and the falling position is performed by gravity, a large amount of electric power is not consumed for the movement.

Further, the first locking portion L1 consumes power only when transitioning from the first lockable state to the first lockable state, and in other cases, the first lockable state consumes no power. And the first lockable state can be maintained. Similarly, the second locking portion L2 consumes power only when transitioning from the second lockable state to the second lockable state, and can be second locked without consuming power at other times. The state and the second lockable state can be maintained. In addition, the first locking portion L1 has a simple structure in which the movable member 10 is locked by the unfused first conductor 11c, and when the first conductor 11c is fused, the movable member 10 cannot be locked. It will be realized. Similarly, the second locking portion L2 has a simple structure in which the movable member 10 is locked by the unfused second conductor 12c, and when the second conductor 12c is fused, the movable member 10 cannot be locked. It will be realized.

<Second Embodiment>
The battery-powered device of the second embodiment has a different display unit D from the above-described embodiment. The battery-powered device of the second embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

6 to 8 are diagrams showing a configuration example of the display unit D of the battery-powered alarm device A of the second embodiment. The left figure of FIG. 6, the left figure of FIG. 7, and the left figure of FIG. 8 are views seen from the outside of the housing 1, and the right figure of FIG. 6, the right figure of FIG. 7, and the right figure of FIG. 8 are the housings. It is a figure seen from the inside of 1.
As shown in the figure, the first locking portion L1 is configured to have a support 13 provided inside the housing 1. The support 13 has an L-shaped member 13a having a shape in which a plate is bent into an L-shape, and a fulcrum member 13b for connecting a predetermined portion of the L-shaped member 13a to the inside of the housing 1. The L-shaped member 13a can swing while being supported by the fulcrum member 13b. As shown in FIG. 6, in a state where the power-on operation for moving the power switch 18 exposed to the outside of the housing 1 is not performed, the power switch 18 is only in contact with the L-shaped member 13a. At this time, the movable member 10 is locked to the L-shaped member 13a at the initial position. Then, as shown in FIG. 7, when the power switch 18 is pushed inward of the housing 1, that is, when the power is turned on, the power switch 18 hits the L-shaped member 13a and the fulcrum member 13b is pressed. The L-shaped member 13a swings as a fulcrum. As a result, the movable member 10 is not locked to the L-shaped member 13a. Then, it falls downward from the initial position.
The second locking portion L2 has a second conductor 12c that can receive electric power from the battery B and is fused by Joule heat generated by energization. The second conductor 12c is connected between the terminal 12a and the terminal 12b, and the control unit 3 can control the current flowing between the terminal 12a and the terminal 12b. For example, the second conductor 12c is configured by using the same material as, for example, a power fuse.

[First state]
FIG. 6 shows the movable member 10 in the first state.
The first lockable state of the first locking portion L1 is movable by the support 13 in an unused state (a state in which the power switch 18 is pushed inward of the housing 1 and the power-on operation is not performed). The member 10 can be supported from below. That is, when the movable member 10 is supported from below by the support tool 13, the movable member 10 is in the initial position in the housing 1. The state in which the movable member 10 is locked at the initial position by the first locking portion L1 in the first lockable state is defined as the first state.

In the first state, since the movable member 10 is located at a position higher than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the first state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the first state is “black”.

[Second state]
FIG. 7 shows the movable member 10 in the second state.
In the first lockable state of the first locking portion L1, the support tool 13 moves in conjunction with the movement of the power switch 18 accompanying the power-on operation, so that the movable member 10 is supported by the support tool 13 from below. It is in a state of disappearing. That is, since the movable member 10 cannot be locked by the support 13 of the first locking portion L1, the movable member 10 falls toward the second locking portion L2 below the first locking portion L1. do. Further, in the second lockable state of the second locking portion L2, the movable member 10 is placed at a predetermined intermediate position below the initial position in the housing 1 because the second conductor 12c is not blown. It is in a state where it can be locked. That is, the movable member 10 is not locked by the support 13 of the first locking portion L1 and is not fused, and the movable member 10 is locked by the second conductor 12c of the second locking portion L2. At that time, the movable member 10 is in an intermediate position. The state in which the movable member 10 is not locked to the first locking portion L1 and is locked at the intermediate position by the second locking portion L2 is defined as the second state.

In the second state, since the movable member 10 is at the same height as the portion of the display window 6, the movable member 10 can be seen from the outside of the housing 1. Therefore, in the second state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern of the display surface of the movable member 10 or theirs. Determined by both. In the present embodiment, since the display surface of the movable member 10 is, for example, white, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the second state is “white”.

[Third state]
FIG. 8 shows the movable member 10 in the third state.
The second lockable state of the second locking portion L2 is a state in which the movable member 10 cannot be locked because the second conductor 12c is fused. That is, since the movable member 10 cannot be locked by the second conductor 12c of the second locking portion L2, the movable member 10 falls below the second locking portion L2. That is, the movable member 10 is not locked by the support 13 of the first locking portion L1 and the movable member 10 is not locked by the second conductor 12c of the second locking portion L2 that is fused. At this time, the movable member 10 is in a drop position below the intermediate position. The state in which the movable member 10 is not locked by either the first locking portion L1 or the second locking portion L2 and is in the falling position below the intermediate position is defined as the third state. ..

When the remaining capacity of the battery B drops to a predetermined lower limit value, the control unit 3 controls the current flowing between the terminals 12a and 12b, and melts the second conductor 12c by energization. As a result, the movable member 10 that was in the intermediate position is not locked by the second conductor 12c and falls, and moves to the drop position below the intermediate position (third state).

In the third state, since the movable member 10 is located at a position lower than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the third state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the third state is “black”.

As described above, the first locking portion L1 is configured to change from the first lockable state to the first lockable state in conjunction with the movement of the power switch 18 accompanying the power-on operation by the user. The first lockable state and the first lockable state can be maintained without consuming electric power. Further, the second locking portion L2 consumes power only when transitioning from the second lockable state to the second lockable state, and otherwise consumes no power and is in the second lockable state. And the second lockable state can be maintained. In addition, the first locking portion L1 locks the movable member 10 with the support tool 13 when the power-on operation is not performed on the power switch 18, and when the power-on operation is performed on the power switch 18, it locks the movable member 10. It is realized by a simple structure in which the movable member 10 cannot be locked due to the movement of the support 13 in conjunction with the movement. Further, the second locking portion L2 is realized by a simple structure in which the movable member 10 is locked by the unfused second conductor 12c, and when the second conductor 12c is fused, the movable member 10 cannot be locked. Will be done.

<Third Embodiment>
The battery-powered device of the third embodiment has a different display unit D from the above-described embodiment. The battery-powered device of the third embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

9 to 11 are diagrams showing a configuration example of the display unit D of the battery-powered alarm device A of the first embodiment. The left figure of FIG. 9, the left figure of FIG. 10, and the left figure of FIG. 11 are views seen from the outside of the housing 1, and the right figure of FIG. 9 and the right figure of FIG. 10 and the right figure of FIG. 11 are views of the housing 1. It is a figure seen from the inside of 1.

In the unused state shown in FIG. 9, the movable member 10 is supported from below by the support tool 14. The support 14 is pushed toward the inside of the housing 1 by the spring 15 and enters the lower side of the movable member 10. However, when the movable member 10 is pushed downward, the support 14 is pushed outward of the housing 1 against the force of the spring 15, and the movable member 10 can move below the support 14. Further, the power switch 19 of the present embodiment always protrudes to the outside of the housing 1, and when the power switch 19 is pushed downward, that is, when the power is turned on, the power switch 19 hits the movable member 10. Then, as the movable member 10 moves downward, the support 14 is pushed out of the housing 1. As a result, the movable member 10 moves downward of the support 14 and is not locked to the support 14. As a result, the movable member 10 falls downward from the initial position.
The second locking portion L2 has a second conductor 12c that can receive electric power from the battery B and is fused by Joule heat generated by energization. The second conductor 12c is connected between the terminal 12a and the terminal 12b, and the control unit 3 can control the current flowing between the terminal 12a and the terminal 12b. For example, the second conductor 12c is configured by using the same material as, for example, a power fuse.

[First state]
FIG. 9 shows the movable member 10 in the first state.
In the first lockable state of the first locking portion L1, the movable member 10 is moved downward by the support 14 in an unused state (a state in which the power-on operation in which the power switch 19 is pushed downward is not performed). It is in a state that can be supported from. That is, when the movable member 10 is supported from below by the support tool 14, the movable member 10 is in the initial position in the housing 1. The state in which the movable member 10 is locked at the initial position by the first locking portion L1 in the first lockable state is defined as the first state.

In the first state, since the movable member 10 is located at a position higher than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the first state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the first state is “black”.

[Second state]
FIG. 10 shows the movable member 10 in the second state.
In the first lockable state of the first locking portion L1, the support tool 14 moves in conjunction with the downward movement of the power switch 19 accompanying the power-on operation, so that the movable member 10 is supported by the support tool 14 from below. It is in a state where it cannot be done. That is, since the movable member 10 cannot be locked by the support 14 of the first locking portion L1, the movable member 10 is the second locking portion L2 below the support 14 of the first locking portion L1. It falls toward you. Further, in the second lockable state of the second locking portion L2, the movable member 10 is placed at a predetermined intermediate position below the initial position in the housing 1 because the second conductor 12c is not blown. It is in a state where it can be locked. That is, the movable member 10 is not locked by the support 14 of the first locking portion L1 and is not fused, and the movable member 10 is locked by the second conductor 12c of the second locking portion L2. At that time, the movable member 10 is in an intermediate position. The state in which the movable member 10 is not locked to the first locking portion L1 and is locked at the intermediate position by the second locking portion L2 is defined as the second state.

In the second state, since the movable member 10 is at the same height as the portion of the display window 6, the movable member 10 can be seen from the outside of the housing 1. Therefore, in the second state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern of the display surface of the movable member 10 or theirs. Determined by both. In the present embodiment, since the display surface of the movable member 10 is, for example, white, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the second state is “white”.

[Third state]
FIG. 11 shows the movable member 10 in the third state.
The second lockable state of the second locking portion L2 is a state in which the movable member 10 cannot be locked because the second conductor 12c is fused. That is, since the movable member 10 cannot be locked by the second conductor 12c of the second locking portion L2, the movable member 10 falls below the second locking portion L2. That is, the movable member 10 is not locked by the support 14 of the first locking portion L1 and the movable member 10 is not locked by the second conductor 12c of the second locking portion L2 that is fused. At this time, the movable member 10 is in a drop position below the intermediate position. The state in which the movable member 10 is not locked by either the first locking portion L1 or the second locking portion L2 and is in the falling position below the intermediate position is defined as the third state. ..

When the remaining capacity of the battery B drops to a predetermined lower limit value, the control unit 3 controls the current flowing between the terminals 12a and 12b, and melts the second conductor 12c by energization. As a result, the movable member 10 that was in the intermediate position is not locked by the second conductor 12c and falls, and moves to the drop position below the intermediate position (third state).

In the third state, since the movable member 10 is located at a position lower than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the third state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the third state is “black”.

As described above, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is in the first state, the second state, and the third state. It changes in order during the transition. Further, the display information of the display unit D when the movable member 10 is in the first state and the third state is the same.

<Fourth Embodiment>
The battery-powered device of the fourth embodiment has a different display unit D from the above-described embodiment. The battery-powered device of the fourth embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

FIG. 12 is a perspective view of the battery-powered device of the fourth embodiment. 13 to 15 are views showing a configuration example of the display unit D of the battery-powered alarm device A according to the fourth embodiment. The left figure of FIG. 13, the left figure of FIG. 14, and the left figure of FIG. 15 are views seen from the outside of the housing 1, and the right figure of FIG. 13, the right figure of FIG. 14, and the right figure of FIG. 15 are the housings. It is a figure seen from the inside of 1.

As shown in the figure, in the present embodiment, the activation command receiving unit SW is an insulating sheet (insulator) 20 exposed to the outside of the housing 1. Inside the housing 1, a pair of connection terminals 16 and 17 to which the positive electrode Ba and the negative electrode Bb of the battery B are electrically connected in the used state, and a part of the connection terminals 16 and 17 projecting to the outside of the housing 1 in the unused state. Another part includes an insulating sheet 20 interposed between one of the positive electrode Ba and the negative electrode Bb of the battery B and the corresponding connection terminals 16 and 17 in a state of being electrically insulated from each other. .. Then, by pulling out the insulating sheet 20 toward the outside of the housing 1, the positive electrode Ba and the negative electrode Bb of the battery B and the pair of connection terminals 16 and 17 are electrically connected, and the operating unit C is electrically connected from the battery B. And is configured to supply power to the display unit D. In the example shown in FIG. 13, when not in use, the insulating sheet 20 is interposed between the negative electrode Bb of the battery B and the connection terminal 17, and power is not supplied from the battery B. On the other hand, when the insulating sheet 20 is pulled out from the negative electrode Bb of the battery B and the connection terminal 17 as the insulating sheet 20 is pulled out toward the outside of the housing 1, the insulating sheet 20 is connected to the negative electrode Bb of the battery B. The terminals 17 are electrically connected to each other, and power is supplied from the battery B. That is, in the alarm device A, in response to the power-on operation of pulling out the insulating sheet 20 toward the outside of the housing 1, the power-on operation is performed from an unused state in which the power-on operation has not yet been performed. It is configured to shift to the usage state after that.
The insulating sheet 20 may be interposed between the positive electrode Ba of the battery B and the connection terminal 16.

In the unused state shown in FIG. 13, the movable member 10 is supported from below by the insulating sheet 20. However, when the insulating sheet 20 is pulled out to the outside of the housing 1 by the power-on operation, the insulating sheet 20 does not exist below the movable member 10, and the movable member 10 can move downward. As a result, the movable member 10 falls downward from the initial position.
The second locking portion L2 has a second conductor 12c that can receive electric power from the battery B and is fused by Joule heat generated by energization. The second conductor 12c is connected between the terminal 12a and the terminal 12b, and the control unit 3 can control the current flowing between the terminal 12a and the terminal 12b. For example, the second conductor 12c is configured by using the same material as, for example, a power fuse.

[First state]
FIG. 13 shows the movable member 10 in the first state.
The first lockable state of the first locking portion L1 is still another one of the insulating sheet 20 in an unused state (a state in which the power-on operation for pulling out the insulating sheet 20 to the outside of the housing 1 is not performed). The movable member 10 can be supported from below by the portion. That is, when the movable member 10 is supported from below by the insulating sheet 20, the movable member 10 is in the initial position in the housing 1. The state in which the movable member 10 is locked at the initial position by the first locking portion L1 in the first lockable state is defined as the first state.

In the first state, since the movable member 10 is located at a position higher than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the first state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the first state is “black”.

[Second state]
FIG. 14 shows the movable member 10 in the second state.
The first lockable state of the first locking portion L1 is linked to the movement of the insulating sheet 20 accompanying the power-on operation, and the movable member 10 is supported from below by yet another part of the insulator in the used state. It is in a state where it cannot be done. That is, since the movable member 10 cannot be locked by the insulating sheet 20 of the first locking portion L1, the movable member 10 is the second locking portion L2 below the insulating sheet 20 of the first locking portion L1. It falls toward you. Further, in the second lockable state of the second locking portion L2, the movable member 10 is placed at a predetermined intermediate position below the initial position in the housing 1 because the second conductor 12c is not blown. It is in a state where it can be locked. That is, the movable member 10 is not locked by the insulating sheet 20 of the first locking portion L1 and is not fused, and the movable member 10 is locked by the second conductor 12c of the second locking portion L2. At that time, the movable member 10 is in an intermediate position. The state in which the movable member 10 is not locked to the first locking portion L1 and is locked at the intermediate position by the second locking portion L2 is defined as the second state.

In the second state, since the movable member 10 is at the same height as the portion of the display window 6, the movable member 10 can be seen from the outside of the housing 1. Therefore, in the second state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern of the display surface of the movable member 10 or theirs. Determined by both. In the present embodiment, since the display surface of the movable member 10 is, for example, white, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the second state is “white”.

[Third state]
FIG. 15 shows the movable member 10 in the third state.
The second lockable state of the second locking portion L2 is a state in which the movable member 10 cannot be locked because the second conductor 12c is fused. That is, since the movable member 10 cannot be locked by the second conductor 12c of the second locking portion L2, the movable member 10 falls below the second locking portion L2. That is, the movable member 10 is not locked by the insulating sheet 20 of the first locking portion L1 and the movable member 10 is not locked by the second conductor 12c of the second locking portion L2 that is fused. At this time, the movable member 10 is in a drop position below the intermediate position. The state in which the movable member 10 is not locked by either the first locking portion L1 or the second locking portion L2 and is in the falling position below the intermediate position is defined as the third state. ..

When the remaining capacity of the battery B drops to a predetermined lower limit value, the control unit 3 controls the current flowing between the terminals 12a and 12b, and melts the second conductor 12c by energization. As a result, the movable member 10 that was in the intermediate position is not locked by the second conductor 12c and falls, and moves to the drop position below the intermediate position (third state).

In the third state, since the movable member 10 is located at a position lower than the portion of the display window 6, the movable member 10 cannot be seen from the outside of the housing 1. Therefore, in the third state, the display information of the display unit D represented by the color or pattern visible from the outside of the housing 1 to the display window 6 or both is the color or pattern inside the housing 1 or both of them. Determined by. In the present embodiment, since the inside of the housing 1 is black, the display information of the display unit D visible from the outside of the housing 1 to the display window 6 in the third state is “black”.

As described above, the first locking portion L1 changes from the first lockable state to the first lockable state when the insulating sheet 20 is pulled out toward the outside of the housing 1 by the user. It is possible to maintain the first lockable state and the first lockable state without consuming electric power. Further, the second locking portion L2 consumes power only when transitioning from the second lockable state to the second lockable state, and otherwise consumes no power and is in the second lockable state. And the second lockable state can be maintained. In addition, the first locking portion L1 has a simple structure in which the movable member 10 is locked by the insulating sheet 20, and when the insulating sheet 20 is pulled out toward the outside of the housing 1, the movable member 10 cannot be locked. It is realized by. Further, the second locking portion L2 is realized by a simple structure in which the movable member 10 is locked by the second conductive 12c body which is not fused, and when the second conductive body 12c is fused, the movable member 10 cannot be locked. Will be done.

<Another Embodiment>
<1>
In the above embodiment, the configuration of the alarm device A as the battery-powered device of the present invention has been described with reference to specific examples, but the configuration can be changed as appropriate. For example, the shapes, sizes, and installation positions of the movable member 10, the first conductor 11c, the second conductor 12c, the supports 13, 14, the insulating sheet 20, and the like are limited to the specific examples described in the above embodiment. However, it can be changed as appropriate.
Further, in the above embodiment, the gas detection sensor and the CO (carbon monoxide) detection sensor are exemplified as the detection sensor 4, but other types of sensors may be used.
In addition, in the drawings of the above-described embodiment, the first conductor 11c and the second conductor 12c are drawn to have the same length, but their lengths are not limited to those shown in the drawings. For example, the terminals 12a and 12b may be installed at the same height as the terminals 11A and 11B, and the second conductor 12c may be longer than the first conductor 11c so as to hang down further. .. As a result, the movable member 10 is locked by the first conductor 11c as the first locking portion at the intermediate position when the movable member 10 is locked by the second conductor 12c as the second locking portion. It is located below the initial position when it is used.

<2>
The configurations disclosed in the above embodiments (including other embodiments) can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction, and are disclosed in the present specification. The embodiment described is an example, and the embodiment of the present invention is not limited to this, and can be appropriately modified without departing from the object of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used for battery-powered devices with low power consumption and low cost.

1 Housing 4 Detection sensor 6 Display window (display unit)
7 CO lamp (display)
8 Gas lamp (display)
10 Movable member 10a Locked portion 11c First conductor (first locking portion)
12c 2nd conductor (2nd locking part)
13 Support (first locking part)
13a L-shaped member (first locking part)
13b fulcrum member (first locking part)
14 Support (first locking part)
15 Spring (1st locking part)
16 Connection terminal 17 Connection terminal 18 Power switch 19 Power switch 20 Insulation sheet (insulator)
A alarm device (equipment)
B Battery C Operating unit D Display unit L1 First locking unit L2 Second locking unit SW Start command receiving unit

Claims (4)

Batteries that supply power and
An operating unit that operates by consuming the electric power supplied from the battery,
A battery-powered device having a housing having a display unit capable of changing information to be displayed by consuming the electric power supplied from the battery.
The display unit is
The display window formed in the housing and
A movable member having a display surface having a predetermined color and / or pattern, and movable through a portion of the housing facing the display window.
The movable member is switched from the first lockable state in which the movable member can be locked at the initial position above the display window in the housing to the first lockable state in which the movable member cannot be locked at the initial position. The first locking part that can be
From the second lockable state in which the movable member can be locked at an intermediate position below the initial position in the housing and facing the display window, the movable member cannot be locked at the intermediate position. It has a second locking part that can switch to an impossible state,
The display information of the display unit represented by the color or pattern visible from the outside of the housing to the display window or both thereof is such that the movable member is locked at the initial position by the first locking unit. The first state, the second state in which the movable member is not locked to the first locking portion and is locked at the intermediate position by the second locking portion, and the movable member is in the first engagement. Since it is not locked from either the stop portion or the second locking portion, it changes in order during the transition to the third state at the drop position below the intermediate position.
Inside the housing, a pair of connection terminals to which the positive and negative electrodes of the battery are electrically connected in use,
In the unused state, a part of the battery protrudes to the outside of the housing, and another part of the battery is electrically insulated between one of the positive and negative electrodes of the battery and the connection terminal. Equipped with an insulator that has been
By pulling out the insulator toward the outside of the housing, the positive electrode and the negative electrode of the battery and the pair of connection terminals are electrically connected, and power is supplied from the battery to the operating unit and the display unit. Is configured to be supplied,
The first locking portion is configured to have the insulator, and in the first lockable state, the movable member can be supported from below by yet another part of the insulator in the unused state. The first lockable state is a state in which the movable member cannot be supported from below by yet another part of the insulator in the use state.
The second locking portion has a second conductor that can receive electric power from the battery and is fused by Joule heat generated by energization, and the second locking state is the second conductor. Is not fused, and the second non-lockable state is a battery-powered device in which the second conductor is fused . Batteries that supply power and
An operating unit that operates by consuming the electric power supplied from the battery,
A battery-powered device having a housing having a display unit capable of changing information to be displayed by consuming the electric power supplied from the battery.
The display unit is
The display window formed in the housing and
A movable member having a display surface having a predetermined color and / or pattern, and movable through a portion of the housing facing the display window.
The movable member is switched from the first lockable state in which the movable member can be locked at the initial position above the display window in the housing to the first lockable state in which the movable member cannot be locked at the initial position. The first locking part that can be
From the second lockable state in which the movable member can be locked at an intermediate position below the initial position in the housing and facing the display window, the movable member cannot be locked at the intermediate position. It has a second locking part that can switch to an impossible state,
The display information of the display unit represented by the color or pattern visible from the outside of the housing to the display window or both thereof is such that the movable member is locked at the initial position by the first locking unit. The first state, the second state in which the movable member is not locked to the first locking portion and is locked at the intermediate position by the second locking portion, and the movable member is in the first engagement. Since it is not locked from either the stop portion or the second locking portion, it changes in order during the transition to the third state at the drop position below the intermediate position.
After the power-on operation is performed from an unused state in which the power-on operation has not yet been performed, in response to the power-on operation for moving the power switch exposed to the outside of the housing. It is configured to transition to the used state,
The first locking portion is configured to have a support provided inside the housing, and in the first lockable state, the movable member is moved from below by the support in the unused state. In the first lockable state, the movable member is supported by the support from below by moving the support in conjunction with the movement of the power switch accompanying the power-on operation. It is in a state where it will not be done
The second locking portion has a second conductor that can receive electric power from the battery and is fused by Joule heat generated by energization, and the second locking state is the second conductor. Is not fused, and the second non-lockable state is a battery-powered device in which the second conductor is fused. The movable member is
When power is not supplied from the battery in the unused state, it is the first state.
When the power is supplied from the battery to change from the unused state to the used state, the state transitions to the second state.
The battery-powered device according to claim 1 or 2 , wherein when the remaining capacity of the battery drops to a predetermined lower limit value, the state transitions to the third state. The moving part is according to any one of claims 1 to 3 , wherein the operating unit includes at least two detection sensors among a fire detection sensor, a gas leak detection sensor, and a carbon monoxide detection sensor. The battery-powered device described.

Images