JP2002000495A - Security device for bathroom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a security device for a bathroom which can detect an abnormal condition of a person in the bathroom, and can secure safety in the bathroom. SOLUTION: The device includes light-emitting means provided on a wall of the bathroom and emitting light in a predetermined frequency in substantially horizontal direction along the upper edge of a bathtub, light-receiving means provided on other walls opposing to the aforementioned wall and receiving the light from the light-emitting means, and a control means for controlling emission of the light from the light-emitting means and also for processing the condition of the light received at the light-receiving means, wherein the control means outputs alarm signals, judging that it is the abnormal condition that the light from the light-emitting means is continuously received at the light-receiving means for (a-predetermined period of time. At least receiving means in the light-emitting means and the light-receiving means is pluraly arranged on the walls of the bathroom, and the light-emitting means and the light-receiving means are disposed respectively on the bathtub side and on the floor side of the walls of the bathroom which are opposing each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a bathroom, for example, a unit bathroom, and more particularly to a safety device for a bathroom which detects an abnormal occurrence of a bather in the bathroom and issues an alarm to the outside.

[0002]

2. Description of the Related Art Conventionally, a safety device of this type in a bathroom is disclosed in, for example, JP-A-8-66323 or JP-A-10-151086. The safety device disclosed in the former (Japanese Patent Laid-Open No. 8-66323)
A water level sensor, a light emitting unit and a light receiving unit are arranged inside the bathtub, and the position of the bather is detected by how light is blocked by the light receiving unit, and it is determined that the bather's head is below the water surface for a certain period of time or more. In such a case, the alarm device is operated to open the automatic opening / closing stopper and lower the water level in the bathtub.

The safety device disclosed in the latter (Japanese Patent Application Laid-Open No. H10-151086) monitors the respiratory tract of a bather with an image input device, detects submersion of the respiratory tract, and takes a caution signal with an alarm device. When the bather responds to this caution signal and presses the confirmation button, it is determined to be normal, and when there is no response to the caution signal, it is determined to be abnormal and the accelerated drainage device is activated to activate the bathtub. It is designed to drain the water inside at high speed.

[0004]

However, in the former safety device, a light emitting section and a light receiving section are arranged on the inner surface of the bathtub to detect the occurrence of an abnormality of the bather, so that the bather in the bathtub loses consciousness. Although the occurrence of an abnormality in the bathtub such as falling down can be detected, the occurrence of an abnormality of the bather in the washing room when the bather in the washing room falls due to loss of consciousness cannot be detected. Therefore, there is a problem that the accuracy of detecting an abnormality of a bather (during bathing) in the bathroom is inferior. In particular, there is a large difference between the temperature inside and outside the bathroom, and the difference between the ambient temperature in the bathroom and the temperature in the bathtub. It is a fact that elderly bathers tend to have this kind of anomaly when there is a great difference between them and the environment.

In the latter safety device, an abnormality is determined by imaging and monitoring the bather's respiratory organ with an image input device arranged near the bathtub, so that the abnormality is determined in the bathtub as in the former safety device. Although the occurrence of an abnormality in a bather can be detected, the occurrence of an abnormality during a bath in a washing room cannot be detected, and there has been a problem that the accuracy of the abnormality detection is poor. In addition, an expensive image input device is required to detect an abnormality, and a control device for processing image data is also complicated, and the safety device itself is likely to be complicated and expensive, and the state of the bather is reduced by the image input device. Since imaging is performed, it is difficult to protect a bather's privacy while taking a bath, giving the bather an uneasy feeling.

[0006] The present invention has been made in view of such circumstances, and an object of the present invention is to reliably detect the occurrence of an abnormality of a bather in a bathtub or a washing place, and An object of the present invention is to provide a bathroom safety device capable of sufficiently ensuring safety. The object of the invention described in claim 2 is:
In addition to the object of the first aspect of the present invention, a bathroom safety device capable of further improving the accuracy of detecting the occurrence of an abnormality and simplifying the configuration is provided. Another object of the present invention is to provide a bathroom safety device capable of simplifying the configuration of the control means. Another object of the present invention is to provide a bathroom safety device capable of reliably detecting an abnormal occurrence of a bather in a bathtub or a washing place and sufficiently securing safety during bathing. An object of the invention described in claim 5 is, in addition to the object of the invention described in claim 4, to provide a bathroom safety device capable of further improving the detection accuracy of abnormality occurrence and simplifying the configuration. Another object of the present invention is to provide a bathroom safety device capable of detecting occurrence of an abnormality with higher accuracy in addition to the objects of the first to fifth aspects of the present invention.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a light having a predetermined wavelength is provided substantially horizontally along an upper edge of a bathtub provided on a wall surface in a bathroom. A light emitting means for irradiating light, a light receiving means provided on a wall surface opposite to the wall surface for receiving light emitted from the light emitting means, and controlling the light irradiation by the light emitting means and processing the state of the light received by the light receiving means. Control means for performing
When the light emitted by the light emitting means is continuously received by the light receiving means for a predetermined time, the control means determines that the light is abnormal and outputs an alarm signal.

[0008] With this configuration, the light of the light emitting means provided on the wall surface of the bathroom under the control of the control means is irradiated toward the light receiving means in a substantially horizontal direction along the upper edge of the bathtub. Is blocked by a bather during bathing. The state of the light is detected by the light receiving means, and the state is appropriately processed by the control means.For example, when the light is continuously received without being interrupted for a predetermined time set in advance, the bather can enter the bathroom in the bathroom. It determines that an abnormality such as falling down has occurred, and outputs an alarm signal to the outside. At this time, since the light emitted from the light emitting means is emitted in a substantially horizontal state in the light receiving means direction of the wall surface facing along the upper edge of the bathtub, the bather is, for example, sitting in the washing place. Also, as in the bathtub, at least the state of the head of the bather can be detected. Thereby, even if the bather falls down in the washing room, the state is reliably detected, and the accuracy of the abnormality detection is improved.

Further, the invention according to claim 2 is characterized in that at least a plurality of light receiving means of the light emitting means and the light receiving means are arranged on a wall surface of the bathroom. With such a configuration, at least a plurality of light receiving units are arranged, for example, a plurality of light emitting units and a plurality of light receiving units are arranged in pairs, or a plurality of light receiving units are arranged for one scanning type light emitting unit. Thereby, the light irradiating the entire bathroom can be received, the occurrence of an abnormality in the bather can be detected more accurately, and the installation number of each means can be set to an optimum number, thereby simplifying the configuration of the device itself. You.

[0010] The invention according to claim 3 is characterized in that the control means determines that an abnormality has occurred when the same light receiving means of the plurality of light receiving means continuously receives light for a predetermined time. With this configuration, when the same light receiving means continuously receives light for a predetermined time, that is, when the same light receiving means is continuously interrupted for a predetermined time, it is determined that there is an abnormality. An abnormality can be detected in the light receiving state, and the control by the control means is simplified.

According to a fourth aspect of the present invention, there is provided a light emitting / receiving means provided on a wall surface in a bathroom for irradiating light of a predetermined wavelength in a substantially horizontal direction along an upper edge of a bathtub and receiving the light by itself; A reflecting means provided on a wall surface other than the wall surface for reflecting light emitted from the light emitting / receiving means; and a control means for controlling irradiation of light from the light emitting / receiving means and processing a state of the reflected light received by the means. Wherein the control means determines that there is an abnormality when the light irradiated by the light emitting / receiving means is continuously received by the means for a predetermined time, and outputs an alarm signal.

With this configuration, the light of the light emitting and receiving means provided on the wall surface of the bathroom under the control of the control means is
Along the upper edge of the bathtub, the light is irradiated toward the reflecting means in a substantially horizontal direction, which is blocked by a bather taking a bath. And
The light reflected by the light reflecting means is received by the light emitting / receiving means, and this state is appropriately processed by the control means,
An abnormality of the bather is detected. Thus, similarly to the first aspect of the present invention, even when the bather falls down in the washing room, this can be reliably detected, and the accuracy of abnormality detection is improved.

The invention according to claim 5 is characterized in that the light emitting and receiving means is formed by a scanning light emitting and receiving device. With such a configuration, the scanning type light-emitting and light-receiving device can irradiate light to each part in the bathroom, so that the detection accuracy of the occurrence of abnormality of the bather is further improved, and the arrangement of one light-emitting and light-receiving device And the configuration of the device itself is simplified.

The invention according to claim 6 is characterized in that the light-emitting means and the light-receiving means or the light-emitting and light-receiving means and the reflecting means are arranged on the wall surfaces on the bathtub side and on the washing side facing each other in the bathroom. I do. With this configuration, the light-emitting means and the light-receiving means or the light-emitting and light-receiving means and the reflection means are disposed on the bathtub-side wall surface and the washroom-side wall surface. Irradiation of light from a direction becomes possible, and the detection accuracy of occurrence of abnormality is further improved.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment in which the safety device according to the present invention is applied to a unit bathroom, and FIG. 1 is a schematic configuration diagram viewed from the front side thereof,
FIG. 2 is a plan view, and FIG. 3 is a flowchart showing an example of the operation.

1 and 2, a unit bathroom 1 includes a waterproof pan 2, four wall panels 3a to 3d,
The ceiling panel 4 forms a box shape. On the waterproof pan 2, a bathtub 5 is arranged on the wall panel 3a side, and a washing place 6 is provided on the wall panel 3d side.
On the wall panel 3c side of the washing place 6, a counter 7 for placing a basin is arranged.

The safety device installed in the unit bathroom 1 has a plurality of (seven in the figure) light emitters 8a to 8g as light emitting means fixed to the wall panel 3d, and faces the wall panel 3d. Light receivers 9a to 9g as a plurality of light receiving means fixed to the wall panel 3b and facing the light emitters 8a to 8g, light emitters 8a to 8g and light receivers 9a to 9g
Has a control device 10 as control means connected thereto. The light emitters 8a to 8g are formed of, for example, a semiconductor light emitting element or an appropriate lamp that irradiates light of a predetermined wavelength such as infrared light which does not adversely affect the human body in a substantially horizontal direction.
d is buried.

The light receivers 9a to 9g are formed of, for example, semiconductor light receiving elements for receiving the light such as infrared rays, and are disposed in a state of being embedded in the wall panel 3b.
The light emitters 8a to 8g are arranged at regular intervals in the width direction of the wall panels 3d and 3b of the unit bathroom 1 (that is, in the direction from the wall panel 3a to the wall panel 3c). And
The installation height of each of the light receivers 9a to 9g is set directly above the upper edge 5a of the bathtub 5 of the wall panel 3b, and the installation height of the light emitters 8a to 8g is opposed to the light receivers 9a to 9g. By setting substantially the same, the light emitted from each of the light emitters 8a to 8g is set so as to be irradiated in a substantially horizontal direction and not blocked by the bathtub 5.

The control device 10 includes, for example, a microcomputer 10
a of the light emitting devices 8a to 8
8g and the light receivers 9a to 9g are connected. The input / output unit of the control device 10 includes a door 1 on the outer surface of the wall panel 3a.
1, a bath switch 12a and a display 12
In addition to the operation panel 12 having the b and the like, an alarm device 13 attached to, for example, the inner surface of the wall panel 3b and an alarm device 14 installed in the kitchen or the like outside the unit bathroom 1 are connected.

The warning device 13 has a warning buzzer 13a.
, A warning indicator lamp 13b and the like, and the alarm device 14 is provided with a warning buzzer 14a and a display 14b. Further, in this example, the control device 10 and the operation panel 12 are formed separately, but it is of course possible to incorporate the control device 10 into the operation panel 12 and integrate them. Further, the number of light emitting devices 8a to 8g and light receiving devices 9a to 9b can be appropriately increased or decreased.

Next, an example of the operation of the safety device will be described with reference to the flowchart of FIG. This flowchart is automatically executed according to a program pre-installed in the microcomputer 10a of the control device 10. First, when the bather M turns on the bathing switch 12a of the operation panel 12 near the door 11 at the time of bathing, the program starts (S100), and the light emitters 8a to 8g operate to emit light (S101).

When light is emitted from the light emitters 8a to 8g,
It is determined whether or not there are light receiving signals from all the light receivers 9a to 9g (S102). “YES” in this determination S102
In other words, if the light emitted from each of the light emitters 8a to 8g is not blocked and all of the light receivers 9a to 9g are receiving light, the safety device itself is determined to be normal and the display on the operation panel 12 is performed. "Bathing" is displayed on the display 12b and the display 14b of the warning device 14 (S103). As a result, the safety device is activated.

On the other hand, if "NO" in the judgment S102, that is, although the bath switch 12a of the operation panel 12 is turned on and the light is emitted from each of the light emitters 8a to 8g, each of the light receivers 9a to 9g. When light is not received by at least one of the above, there is an object that blocks light in the unit bathroom 1, or the light receivers 9a to 9g and the light emitters 8a to 8g
It is determined that the safety device itself is abnormal and the safety device itself is abnormal.
In step S109, "device abnormality" is displayed on the second display 12b, and the program is immediately terminated (S112).

When the safety device is activated in step S103, it is determined again whether all the light receiving signals are present (S104). The determination of the presence or absence of this light receiving signal is also made based on the light receiving state of all the light receivers 9a to 9g, similarly to step S102, and becomes "YES" when all the seven light receivers 9a to 9g are receiving light. . In the case of “NO” in this determination S104, that is, at least one of the light emitted from each of the light emitters 8a to 8g is in the bathtub 5 or the washing place 6 as shown by the solid line and the two-dot chain line in FIG. At least one predetermined light receiver 9a-
If 9g does not receive the light, it is determined that the bather M is normally in either the bathtub 5 or the washroom 6, and it is determined whether or not the bath switch 12a is off (S105).

If the determination in step S105 is "NO", that is, if normal bathing is being performed, step S10 is performed.
Return to 4. If "YES" in the determination S105, that is, if the bathing is completed and the bathing switch 12a of the operation panel 12 is turned off, "bathing end" is displayed on the operation panel 12 and the indicators 12b and 14b of the alarm device 14. (S110), and a series of programs ends (S112). By the determination of the presence or absence of the light receiving signal in step S104 and the like, the light from the light emitters 8a to 8g and the light receivers 9a to 9g is emitted in a substantially horizontal direction along the upper edge 5a of the bathtub 5, and this light is at least Since the setting is made so as to be shielded by the head, the state of the bather M during bathing is reliably detected.

On the other hand, if "YES" in the determination S104,
That is, all the seven light receivers 9a to 9g are
If light from a to 8g is received, it is determined whether or not this state has passed a predetermined time (S106).
Is done. Then, if "NO" in this determination S106,
That is, if the predetermined period of time during which no light is received has elapsed, the process returns to step S104. If "YES" in the determination S106, that is, if the light is not interrupted by the bather M and all the light receivers 9a to 9g continuously receive light for a predetermined time, it is determined to be a temporary abnormal state and the alarm device is set. An alarm signal is output to the alarm 13 and the alarm buzzer 13a sounds (S10).
7).

When the warning buzzer sounds in step S107,
It is determined again whether all the light receiving signals are present (S108). In the case of "NO" in this determination S108,
Although the bather M is normally taking a bath, at least one light cannot be blocked for a predetermined time for some reason, and the bather M knows this state by the warning buzzer 13b and manually detects the nearby light by hand or the like. If the bath is blocked, it is determined that the bather M is taking a normal bath, and the process returns to step S104. As a result, the temporary abnormal state is released. At this time, among the seven light emitters 8a to 8g and the light receivers 9a to 9g, the light emitters 8a to 8g and the light receivers 9a to 9g at predetermined positions are marked in advance. Thereby, the release operation when the warning buzzer 12b sounds can be performed quickly by blocking the light at the position.

If "YES" in the judgment S108,
In other words, even if all the light receivers 9a to 9g continuously receive light for a predetermined time and the warning buzzer 12b sounds, if all the light reception signals are still input, it is determined that the bather M is in an abnormal state. Output an abnormal signal to the alarm device 14 (S1
11) Then, the alarm buzzer 14a of the alarm device 14 is sounded and the display 14b indicates that the alarm is abnormal. At this time, it is of course possible to use the abnormal signal as an operation signal of the drainage mechanism as shown in the conventional example. As a result, the abnormality of the bather M can be notified to a family or the like in the kitchen or the like, and a predetermined process is performed. At this time, the family notices that the bather M is bathing on the display 14b of the alarm device 14. Is displayed in advance, it is possible to quickly know that an abnormality is occurring during bathing.

In the above description of the operation, all the light receiving states of the seven light receivers 9a to 9g are detected, and if the light receiving state is continuously received for a predetermined time, it is determined that the light receiving state is abnormal.
For example, constantly monitor the light receiving state of each of the light receivers 9a to 9g,
If the same one or more specific light receivers 9a to 9g continuously receive light for a predetermined period of time, that is, if only the same light receivers 9a to 9g are blocked, it is determined to be abnormal and control is simplified. You can also. In addition, a plurality of light receivers 9
a to 9g (light-emitting devices 8a to 8g) are divided into groups, and when all of the light-receiving devices 9a to 9g in a specific group receive light, that is, when all of the light-receiving devices 9a to 9g in a specific group are blocked, an abnormality is determined. Various determination methods such as determination can be adopted.

As described above, in the safety device of the above embodiment, the wall panels 3b facing the unit bathroom 1
In 3d, the light emitting devices 8a to 8g and the light receiving devices 9a to 9g, to which light is irradiated in a substantially horizontal direction, are fixed to the upper edge 5a of the bathtub 5,
The state of the light received by the light receivers 9a to 9g is
At least the head of the bather M who is sitting in the bathtub 5 or the washing room 6 is detected, and the abnormal state of the bather M who has fallen in the bathtub 5 or the washing room 6 due to loss of consciousness or the like is reliably detected. , An alarm can be issued, and the occurrence of an abnormality of the bather M can be detected with high accuracy.

In particular, the light emitting devices 8a to 8g and the light receiving devices 9a to 9
Since g is fixed to the opposing wall panels 3b and 3d sandwiching the bathtub 5 and the washing place 6, irradiation and reception of light from both sides of the bather M are possible, and the presence of the bather M is reliably detected. As a result, the accuracy of the abnormality detection can be further improved, and as a result, it is possible to sufficiently secure the safety of the bather M at the time of bathing.

Further, the light emitting devices 8a to 8g and the light receiving devices 9a to 9g each comprising a semiconductor light emitting element or a light receiving element and the microcomputer 10
Since the safety device can be constituted by the control device 10 made of a, the expensive device such as an image input device is not required, the safety device itself can be formed at low cost, and the control by the control device 10 also blocks light. Only the state needs to be processed, and the configuration is simplified. From these, while being able to simplify the configuration of the safety device,
For example, it can be easily attached to an existing unit bathroom 1 or the like. Furthermore, since the image input device is not used, the privacy of the bather M during bathing can be protected, and the bath can be relaxed.

Further, when all the light receivers 9a to 9g are in a temporary abnormal state in which a light receiving signal is received, the temporary abnormal state is released by, for example, blocking one of the plurality of lights with a hand or the like. Therefore, the release operation at the time of a temporary abnormality can be easily performed, and since the operation panel 12 is disposed near the door 11, the safety device can be easily activated by the operation before bathing, or the operation panel 12 can be easily operated. An abnormality in the safety device itself can be easily detected by operation. In addition, since the alarm device 14 is disposed in the kitchen or the like outside the unit bathroom 1, the state of the bather M can be reliably notified to a third party such as a family, and the safety is excellent in usability and operability. The device can be obtained, and it can be installed in a aging home or the like, and a great effect can be expected.

FIG. 4 is a plan view similar to FIG. 3, showing another embodiment of the safety device according to the present invention. The same parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The feature of the safety device of this embodiment is that the wall panel 3
d, one light-emitting and light-receiving device 15 as light-emitting and light-receiving means in which the light-emitting device and the light-receiving device are integrated, is fixed to the wall panels 3a to 3c.
And a reflection tape 16 as a reflection means is fixed to the recording medium. The light emitting and receiving device 15 is, for example, a search type, and is formed so as to be searched in the range of the search angle θ from the position a to the position b in FIG.

The reflection tape 16 is attached to each wall panel 3a.
Reflecting portions provided at a plurality of positions (seven in the figure) which are bonded and fixed at substantially the same height as the installation height of the light emitting and receiving device 15 to 3c, and divide the light within the search angle θ at a constant angle. It is formed so as to be able to reflect from 16a to the light emitting and receiving device 15. The reflecting means of this embodiment is not limited to the reflecting tape 16, but may be an appropriate reflector such as a reflecting mirror which is fixed in a predetermined position of the wall panels 3a to 3c in a buried state and which can obtain a design effect. You can also. The safety device controls the light emitting portion of the light emitting / receiving device 15 by a control signal of the control device 10 (see FIG. 1) to irradiate light sequentially from the position a to the position b or vice versa, and to move the light to a predetermined angle position The bathing state of the bather M is detected by receiving the reflected light from each of the reflecting portions 16a of the provided reflecting tape 16 with the light receiving portion of the light emitting and receiving device 15.

In this embodiment, for example, the state of the bather M can be detected in the state of receiving the reflected light at all the angular positions, and the same operation and effect as those of the above embodiment can be obtained. Can be installed by fixing the container 15 and bonding the reflection tape 16 to the wall panels 3a to 3c.
The effects of the present invention can be obtained such that the configuration of the safety device itself can be further simplified, and the safety device can be easily installed in the unit bathroom 1.

In this embodiment, the light emitting and receiving device 15 is arranged on the wall panel 3d, and the other wall panels 3a to 3c are arranged.
Although the reflection tape 16 is disposed on the other side, the light emitting / receiving device 15 is installed on any of the other wall panels 3a to 3c, and the reflection tape 16 and the other are disposed on the corresponding opposed or adjacent wall panels 3a to 3d. An appropriate reflector can be provided.

In each of the above embodiments, the case where a plurality of light emitting devices 8a to 8g and the light receiving devices 9a to 9g are arranged to face each other and the case where one light emitting and receiving device 15 is searched within a predetermined range have been described. For example, a plurality of light emitters 8 arranged
Of course, it is also possible to detect an abnormal state while investigating a to 8g, or to extend the detection range by arranging a plurality of light emitting and receiving devices 15. Further, in each of the above embodiments, the case where the bathroom is the unit bathroom 1 has been described. However, the present invention can be applied to a general bathroom, and the operation panel 12 and the alarm devices 13 and 14 can be used. , Or the position of the door 11 can be appropriately changed.

[0039]

As described above in detail, according to the first aspect of the present invention, light in a substantially horizontal direction along the upper edge of the bathtub emitted from the light emitting means is received by the light receiving means, and is controlled. In the case where the light is not interrupted for a predetermined time set in advance, for example, it is determined that an abnormal condition has occurred in the bather and an alarm signal is output to the outside, so that the bather is in the bathtub. In this case, it is possible to detect at least the state of the head of the bather even when sitting in the washing room, thereby improving the detection accuracy of the abnormal state.

According to the second aspect of the invention, in addition to the effect of the first aspect, at least a plurality of light receiving means are arranged on the wall surface of the bathroom, so that the light emitting means irradiates the whole of the bathroom. Light can be received by each of the light receiving means, and the occurrence of an abnormality in the bather can be detected more accurately, and the number of light emitting means can be reduced, for example, and the configuration of the apparatus itself can be simplified. Can be.

According to the third aspect of the invention, in addition to the effect of the second aspect, when the same light receiving means continuously receives light for a predetermined time, that is, when the same light receiving means continues for a predetermined time. Since it is determined as abnormal when the light is interrupted, abnormality can be detected in the light receiving state of the same light receiving means, and control by the control means can be simplified.

According to the fourth aspect of the present invention, the light from the light emitting / receiving means is irradiated along the upper edge of the bathtub toward the reflecting means in a substantially horizontal direction, and the reflected light is received by the light emitting / receiving means. In the same manner as in the first aspect of the present invention, even if the bather falls down in the washing room, this can be reliably detected, and the accuracy of abnormality detection is improved. Can be done.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, the light emitting and receiving means is formed of a scanning type light emitting and receiving device. Irradiation can be made to each part in the bathroom to improve the detection accuracy, and at least one light-emitting and light-receiving device can be arranged, so that the configuration of the safety device itself can be simplified.

According to the sixth aspect of the present invention, in addition to the effects of the first to fifth aspects, the light emitting means and the light receiving means or the light emitting and receiving means and the reflecting means are provided on the bathtub side of the bathroom opposite to each other. Since it is provided on the wall surface and the wall on the washroom side, it is possible to irradiate light from the side direction of the bather with an efficient arrangement of each means, and it is possible to further improve the detection accuracy of occurrence of abnormality Has the effect of

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a unit bathroom using a safety device according to the present invention as viewed from the front side.

FIG. 2 is a plan view of the same.

FIG. 3 is a flowchart for explaining an example of the operation.

FIG. 4 is a plan view similar to FIG. 2, showing another embodiment of the safety device according to the present invention;

[Explanation of symbols]

 1 unit bathroom 3a-3d wall panel 4 ceiling panel 5 bathtub 5a ... Upper edge 6... Washing area 7... Counter 8a to 8g... Control device 12 Operation panel 12a Bath switch 12b Indicator 13 Alarm device 13a: warning buzzer 13b: warning indicator light 14: alarm device 14a: warning buzzer 14b: ··························································································· Reflection

Claims (6)

[Claims] 1. A light emitting means provided on a wall surface in a bathroom for irradiating light of a predetermined wavelength in a substantially horizontal direction along an upper edge of a bathtub; and a light emitting means provided on a wall surface opposed to said wall surface to emit light. Light receiving means for receiving light, and control means for controlling the irradiation of light by the light emitting means and processing the state of the light received by the light receiving means, the control means,
A safety device for a bathroom, characterized in that when the light irradiated by the light emitting means is continuously received by the light receiving means for a predetermined time, it is determined to be abnormal and an alarm signal is output. 2. The bathroom safety device according to claim 1, wherein at least a plurality of the light receiving means among the light emitting means and the light receiving means are arranged on a wall surface of the bathroom. 3. The bathroom safety device according to claim 2, wherein said control means determines that an abnormality has occurred when the same light receiving means of the plurality of light receiving means continuously receives light for a predetermined time. 4. A light emitting and receiving means provided on a wall surface in a bathroom for irradiating light of a predetermined wavelength in a substantially horizontal direction along an upper edge of a bathtub and receiving the light by itself, and provided on a wall surface other than the wall surface. Reflecting means for reflecting light emitted from the light emitting and receiving means, and controlling means for controlling irradiation of light from the light emitting and receiving means and processing the state of the reflected light received by the means; A safety device for a bathroom, characterized in that when the light emitted by the light emitting and receiving means is continuously received by the means for a predetermined time, it is determined to be abnormal and an alarm signal is output. 5. The bathroom safety device according to claim 4, wherein said light emitting and receiving means is formed by a scanning light emitting and receiving device. 6. The bathroom according to claim 1, wherein the light emitting means and the light receiving means or the light emitting and receiving means and the reflecting means are arranged on a wall surface on a bathtub side and a wall surface on a washing place side facing each other in the bathroom. Bathroom safety device according to any of the above.