JP2009125511A - Bathroom stain detecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathroom stain detecting device capable of detecting the level of stain within a bathroom and retaining the interior of the bathroom clean by reducing loads of monitoring the level of stain within the bathroom. <P>SOLUTION: A prescribed position within the bathroom 1 is a detected part 2. The bathroom stain detecting device has a light receiving part 4 for receiving the light penetrating the detected part 2 or reflected on the detected part 2. The bathroom stain detecting device also has a stain detecting means for detecting the level of stain in the detected part 2 based on the quantity of light received by the light receiving part 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bathroom dirt detection device for detecting dirt in a bathroom.

  If the bathroom is left in a dirty state, mold or the like is generated, which is undesirable in terms of hygiene, and it becomes difficult to remove the dirt, resulting in an increase in the burden of cleaning work. For this reason, it is necessary to monitor the state of dirt in the bathroom, and to quickly clean up when dirt occurs.

  However, the above monitoring is performed by visual recognition of the current situation, and it is very troublesome and refrained from regularly performing such monitoring. For this reason, it is often noticed that the bathroom is dirty for the first time when the bathroom becomes very dirty. In this case, the bathroom is very dirty, and the dirt is extremely dirty and difficult to clean. The work burden increases. In particular, there are places in the bathroom that are very difficult to see, such as places facing the lower space of the counter, and such places are particularly easily overlooked, and the above problems are likely to occur.

Conventionally, there is known a bathroom cleaning apparatus that performs cleaning in a bathroom as shown in Patent Document 1, for example, in order to reduce the burden of cleaning work in the bathroom.
JP 2004-290397 A

  The present invention has been made in view of the above-described conventional problems, can detect the degree of dirt in the bathroom, and can reduce the burden of monitoring the degree of dirt in the bathroom and keep the bathroom clean. An object of the present invention is to provide a bathroom dirt detection device that can be used.

  In order to solve the above-described problems, a bathroom dirt detection device according to the present invention uses a predetermined portion in a bathroom 1 as a detected portion 2 and receives light transmitted through the detected portion 2 or reflected by the detected portion 2. And a dirt detecting means for detecting the degree of dirt of the detected part 2 based on the amount of light received by the light receiving part 4. With the above configuration, the degree of contamination of the detected part 2 is detected based on the amount of light received by the light receiving part 4 that receives light that is transmitted through or reflected by the detected part 2 in the bathroom 1. it can.

  A second aspect of the present invention is characterized in that in the first aspect, a light emitting section 3 that irradiates light toward the detected section 2 is provided. Light from the light emitting unit 3 is applied to the light receiving unit 4 through the detected unit 2 to reduce the influence of disturbance, and the degree of contamination can be reliably detected.

  According to a third aspect of the present invention, in the second aspect, the light emitted from the light emitting unit 3 toward the detected unit 2 is laser light. By making the light irradiated toward the detected portion 2 into a laser beam having high straightness, the light irradiated from the light emitting portion 3 is reliably applied to the light receiving portion 4 via the detected portion 2 and is affected by disturbance. And the level of dirt can be reliably detected.

  Further, according to a fourth aspect of the present invention, in the second or third aspect, the light amount detection means is provided in the bathroom 1, and when the light amount in the bathroom 1 detected by the light amount detection means is equal to or less than a predetermined amount, 2 is irradiated with light, and at this time, the dirt detecting means detects the degree of dirt of the detected portion 2. During daytime on a sunny day or when the bathroom lighting device is turned on, sunlight or light from the bathroom lighting device may reach the light receiving unit 4 and the detection accuracy may decrease. By detecting the degree of contamination of the detected part 2 only when the amount of light in the bathroom 1 detected by the means is less than or equal to a predetermined amount, the degree of contamination can be reduced when it is difficult to be affected by the deterioration factor of the detection accuracy such as at night. It can detect and can improve detection accuracy.

  Further, according to claim 5, in any one of claims 2 to 4, the light receiving unit 4 and the light emitting unit 3 are configured integrally and are detachable with respect to bathroom constituent members installed in the bathroom 1. It is characterized by. Maintenance inspection of the light receiving unit 4 and the light emitting unit 3 can be easily performed.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the dirt detecting means compares the amount of light received by the light receiving unit 4 with a threshold value to determine the degree of dirt, and changes the threshold value. And a threshold value changing means. By changing the threshold value, the degree of dirt detected by the dirt detection means can be adjusted to the sense of the individual, and it is possible to cope with changes in the environment of the bathroom 1 and the like.

  A seventh aspect of the present invention provides the light receiving unit 4 according to any one of the first to sixth aspects, wherein the light receiving unit 4 faces the space below the protruding portion that protrudes into the bathroom 1 from the wall 7, the bathtub 5, or the apron 6 of the bathroom 1. It is characterized by providing in. The light receiving unit 4 can be arranged in a place that is not easily noticeable in the bathroom 1.

  Further, an eighth aspect of the present invention is the cleaning apparatus 25 according to any one of the first to seventh aspects, wherein the predetermined portion in the bathroom 1 including the detected portion 2 is a cleaned portion 24 and the cleaned portion 24 is cleaned. The cleaning device 25 includes control means for automatically cleaning the cleaned part when the dirty detection means detects that the detected part 2 is dirty. When the detected part 2 is contaminated, the cleaned part 24 including the detected part 2 can be automatically cleaned, and thereby the invisible part in the bathroom 1 including the detected part 2 can be kept clean.

  Further, a ninth aspect includes the drying means for drying the detected part 2 or the dry state detecting means for detecting that the detected part 2 is in a dry state in any one of the first to eighth aspects, The dirt detecting means detects the degree of dirt of the detected part 2 after the detected part 2 is dried by the drying means, or is detected when the dry state detecting means detects that the detected part 2 is in a dry state. It is characterized in that the degree of contamination of the part 2 is detected. Only when the detected part 2 is in a dry state, the degree of contamination of the detected part 2 can be detected, and the detection accuracy can be improved.

  A tenth aspect of the present invention includes the water sprinkling device that sprinkles water on the detected portion 2 according to any one of the first to eighth aspects, and the dirt detecting means attaches water to the detected portion 2 by the sprinkling device. The degree of contamination of the detected portion 2 is detected later. Similarly, the degree of contamination of the detected part 2 can be detected while the detected part 2 is wet, and the detection accuracy can be improved.

  Further, according to an eleventh aspect, in any one of the first to tenth aspects, a protective cover 17 having translucency for protecting the light receiving portion 4 is detachably disposed at a position facing the light receiving portion 4. It is characterized by that. The protective cover 17 can be easily cleaned and the detection accuracy can be maintained.

  In the present invention, the degree of dirt in the bathroom can be easily monitored, and the detection result can be used to keep the bathroom clean.

  Hereinafter, embodiments of the present invention will be described in order with reference to the accompanying drawings.

(First Example)
First, the first embodiment will be described. The bathroom dirt detection apparatus of this example shown in FIG. 1 uses a predetermined location in the bathroom 1 as a detected portion 2, a light emitting portion 3 that irradiates light toward the detected portion 2, and the detected portion 2. A light receiving unit 4 that receives light from the light emitting unit 3 reflected by the light receiving unit 4, and a stain detection unit that detects the degree of contamination of the detected unit 2 based on the amount of light received by the light receiving unit 4.

  As a place set to the to-be-detected part 2, for example, it faces the lower space of the protruding part (for example, counter 8, currant 30, shelf, etc.) protruding into the bathroom 1 from the wall 7 of the bathroom 1, the bathtub 5, or the apron 6 or the like. In this example, the part facing the lower space of the counter 8 protruding from the wall 7 of the bathroom 1, more specifically, on the floor surface 31 constituting the washing place 9 of the bathroom 1, below the counter 8. The portion located at is the detected portion 2. In addition, the to-be-detected part 2 is good also as a location facing the downward space of the other protrusion part which protrudes in the bathroom 1 from the wall 7 or the bathtub 5 or the apron 6 of the bathroom 1, etc. It is good as a place.

  A plate-like counter 8 shown in FIG. 1 is installed between a bathtub 5 and a wall 7 of the bathroom 1 facing the bathtub 5 with a washing place 9 therebetween, and a currant 30 is provided on the front end surface thereof. A light receiving unit 10 having a light receiving unit 4 and a light emitting unit 11 having a light emitting unit 3 are provided on the lower surface of the counter 8, and the light emitting unit 11 is located on the tip side of the counter 8 with respect to the light receiving unit 10.

  As shown in FIG. 2, the light emitting unit 3 is housed in a case 12 that constitutes the outline of the light emitting unit 11. As the light emitting unit 3, various light sources such as a laser light source, a fluorescent lamp, and a light emitting diode can be used. Preferably, a laser light source that irradiates laser light having high straightness is preferable. By making the light emitted toward the detected part 2 into a laser beam having high straightness, the light emitted from the light emitting part 3 can be reliably applied to the light receiving part 4 via the detected part 2; This is because the influence of the disturbance on the detection result can be reduced. A cover mounting hole 13 is provided at a position facing the light emitting unit 3 on the lower surface of the case 12, and a protective cover 14 having translucency for protecting the light emitting unit 3 is detachably attached to the cover mounting hole 13. It is attached.

  In addition, as shown in FIG. 3, the light receiving unit 4 made up of a light receiving sensor is housed in a case 15 that forms the outline of the light receiving unit 10. A cover mounting hole 16 is provided at a position facing the light receiving portion 4 on the lower surface portion of the case 15, and a protective cover 17 having translucency for protecting the light receiving portion 4 is detachably attached to the cover mounting hole 16. It is attached. That is, in this example, the protective cover 17 is attached by the case 15 of the light receiving unit 10. The reason why the protective covers 14 and 17 of the light emitting unit 11 and the light receiving unit 10 are detachable from the cases 12 and 15 is that the protective covers 14 and 17 can be removed from the cases 12 and 15 so that the cleaning can be easily performed. Therefore, the detection accuracy can be maintained.

  Further, the bathroom dirt detection device includes a display unit 18 such as a display device provided in the bathroom 1 or outside the bathroom 1 as notification means for notifying the degree of the detected dirt, and the display unit 18 and the light emitting unit 3 are provided. The light receiving unit 4 is electrically connected to a control unit 19 including a control circuit, and is controlled by the control unit 19.

  Here, when the detected part 2 is contaminated, the amount of light reflected by the detected part 2 is reduced, so that the light emitted from the light emitting part 3 is difficult to reach the light receiving part 4 and is received by the light receiving part 4. The amount decreases. That is, when light is emitted from the light emitting unit 3, the amount of light received by the light receiving unit 4 changes depending on the degree of contamination of the detected unit 2, and the bathroom dirt detection device of this example uses this to detect the detected unit. 2. Detect the degree of contamination.

  That is, when detecting the contamination of the detected part 2, the control part 19 irradiates light from the light emitting part 3 toward the detected part 2, and reflects the light from the light emitting part 3 by the detected part 2. The amount of light received by the light receiving unit 4 at this time is compared with a preset threshold value, thereby determining the degree of contamination of the detected unit 2 and displaying the detection result on the display unit 18. To do. That is, in this example, the control unit 19 constitutes a dirt detection means.

  The bathroom dirt detection apparatus of the present example described above can detect the degree of dirt of the detected part 2 in the bathroom 1 using the light emitting part 3 and the light receiving part 4, and monitors the degree of dirt in the bathroom 1. Can be reduced. Moreover, in this example, since the light receiving part 4 and the light emitting part 3 are provided in the location facing the lower space of the protruding part protruding into the bathroom 1 from the wall 7 or the bathtub 5 or the apron 6 of the bathroom 1, the light receiving part 4 and the light emitting part Part 3 can be made inconspicuous.

  Note that the detection and display of the degree of contamination of the detected portion 2 by the control unit 19 is performed constantly or periodically, but is performed by a command from an operation unit or other device operated by the user. It may be a thing. Further, the detection of the degree of contamination may be a detection of two levels of contamination (that is, presence / absence of contamination), or may be a detection of the degree of contamination of three or more levels.

  Here, a light amount detection means such as an illuminance sensor (not shown) is provided in the bathroom 1, and only when the light amount in the bathroom 1 detected by the light amount detection means is less than a predetermined amount, It is preferable to detect the degree of contamination of the detected portion 2 by irradiating the detection portion 2 with light. In the daytime on a sunny day or when the bathroom lighting device is turned on, the sunlight or the light from the bathroom lighting device that has entered the bathroom 1 may reach the light receiving unit 4 and decrease the detection accuracy. However, if the degree of contamination of the detected portion 2 is detected only when the amount of light in the bathroom 1 detected by the light amount detection means is equal to or less than a predetermined amount as described above, it is difficult to be affected by the detection accuracy reduction factor, Detection accuracy can be improved. The light amount detection means may be provided at a location facing the lower space of the protruding portion such as the counter 8 or the like, that is, a location that is particularly difficult to see during normal use of the bathroom 1 in the vicinity of the detected portion 2. You may provide in the location away from 2. FIG. Further, the light receiving unit 4 may constitute a light amount detecting means.

  Further, as shown in FIG. 4, it is preferable that the detected portion 2 is configured by a reflective member 2 a having a high reflection efficiency that has been subjected to metal or mirror treatment. In this case, the reflection efficiency of the detected portion 2 is set to the reflection efficiency of the surrounding portion. It is possible to increase the detection accuracy by increasing the amount of light received by the light receiving unit 4.

  Further, as shown in FIG. 5, it is preferable that the light receiving unit 4 and the light emitting unit 3 are integrally formed and detachably attached to the counter 8. In this case, maintenance and inspection of the light receiving unit 4 and the light emitting unit 3 can be easily performed. It can be carried out. In the example of FIG. 5, the light receiving unit 4 and the light emitting unit 3 are housed in a main body case 20 to form a unit 21, thereby the light receiving unit 4 and the light emitting unit 3 are integrally configured. In this example, the unit 21 in which the light receiving unit 4 and the light emitting unit 3 are integrally formed is detachably provided on the lower surface of the counter 8. However, the apparatus main body 21 is adjusted to the position of the detected unit 2, etc. You may detachably attach with respect to the other bathroom structural members with which the bathroom 1, such as the wall 7, the ceiling, and the bathtub 5, are equipped. Further, in FIG. 5, the means for detachably attaching the apparatus main body 21 is constituted by the hook 22 and the projection 23 engaged with the hook 22, but it may be constituted by a sucker, a screw or the like.

  In addition, it is preferable to include a threshold value changing unit for changing a threshold value to be compared with the amount of light received by the light receiving unit 4 when the control unit 19 detects the degree of contamination. The threshold value changing unit is operated by a user. And an operation unit. Feeling dirty is different depending on the individual, and by providing the threshold value changing means for changing the threshold value as described above, the degree of detected dirt can be adjusted to the sense of the individual. Moreover, it can respond to the environmental change of the bathroom 1, etc.

(Second embodiment)
Next, a second embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  The light receiving unit 4 of this example shown in FIG. 6 receives light from the light emitting unit 3 that has passed through the detected unit 2, and the control unit 19 is based on the amount of light received by the light receiving unit 4 as in the first embodiment. The degree of contamination of the detected part 2 is detected. That is, when the detected part 2 is contaminated, the amount of light transmitted through the detected part 2 is reduced, so that the light emitted from the light emitting part 3 is difficult to reach the light receiving part 4. Then, using this, the degree of contamination of the detected part 2 is detected.

  In FIG. 6, the light emitting unit 11 having the light emitting unit 3 is provided on the lower surface of the counter 8, and the light receiving unit having the light receiving unit 4 at a position facing the light emitting unit 11 on the floor 31, that is, a position positioned below the counter 8. 10 is provided. As shown in FIG. 7, the upper surface of the case 15 that constitutes the outline of the light receiving unit 10 is exposed upward from the floor surface 31 to be substantially flush with the floor surface 31, and faces the light receiving unit 4 at the upper surface portion of the case 15. A cover mounting hole 13 is provided at a place to be performed. A light-transmitting protective cover 17 for protecting the light receiving unit 4 is detachably attached to the cover mounting hole 13, and the detected portion 2 is configured by the upper surface of the protective cover 17 in this example.

  In this example, when detecting the contamination of the detected part 2, the control unit 19 irradiates light from the light emitting part 3 toward the detected part 2, and transmits this light through the protective cover 17 constituting the detected part 2. The degree of contamination of the detected portion 2 is detected based on the amount of light received by the light receiving portion 4 at this time.

(Third embodiment)
Next, a third embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  The bathroom dirt detection device of this example shown in FIG. That is, the light receiving unit 4 receives light in the bathroom 1, and the dirt detection unit detects the degree of dirt on the detected part 2 based on the amount of light received by the light receiving unit 4.

  In the illustrated example, the light receiving unit 10 having the light receiving unit 4 is provided at a position below the counter 8 on the floor 31. The structure of the light receiving unit 10 is the same as that of the second embodiment. And in this example, when detecting the stain | pollution | contamination of the to-be-detected part 2, the control part 19 permeate | transmits the protective cover 17 which comprises the to-be-detected part 2, and is based on the quantity of the light in the bathroom 1 which reached | attained the light-receiving part 4. The degree of contamination of the detected part 2 is detected.

  The bathroom dirt detection apparatus of this example uses the light receiving part 4 that receives the light in the bathroom 1 that has passed through the detected part 2, and can detect the degree of dirt on the detected part 2 with a simple configuration.

(Fourth embodiment)
Next, a fourth embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  The bathroom dirt detection apparatus of this example shown in FIG. 9 is a part including the detected part 2 in the bathroom 1, that is, a part located below the counter 8 on the floor 31 of the bathroom 1 (the detected part 2 and the vicinity thereof). The portion to be cleaned 24 is provided, and a cleaning device 25 for cleaning the portion to be cleaned 24 is provided. The cleaning device 25 includes a discharge port 26 for discharging a cleaning liquid made of water or detergent. The discharge port 26 is located below the rear end portion of the counter 8, and the cleaning liquid is sprayed from this position toward the lower portion 24 to be cleaned as shown in FIG. 32 flows to the other part of the floor 31 and is removed.

  Further, the control unit 19 is set so that the cleaning liquid is automatically ejected from the discharge port 26 toward the cleaning target 24 when it is detected that the detection target 2 is dirty. That is, the control means of the cleaning device 25 is configured by the control unit 19.

  The bathroom dirt detection device of this example can automatically clean the part to be cleaned 24 including the part to be detected 2 when the part to be detected 2 is dirty, and thereby the part to be cleaned 24 can be kept clean. In this example, the display unit 18 described above may be omitted. This example can also be applied to the second and third embodiments described above.

(Fifth embodiment)
Next, a fifth embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  The bathroom dirt detection apparatus of this example shown in FIG. 10 includes a drying means for drying the detected part 2. The drying means in the illustrated example is a ventilation device 27 that ventilates the entire interior of the bathroom 1, and is provided on the ceiling of the bathroom 1.

  In addition, when the ventilation device 27 ventilates the bathroom 1 for a certain time or more, the control unit 19 automatically detects the degree of contamination of the detected portion 2 after the operation of the ventilation device 27 is stopped. It is set to do. Note that the operation control of the ventilation device 27 is performed by operating an operation unit (not shown). As a result, the degree of contamination of the detected portion 2 that is always in the same dry state by the ventilator 27 can be detected, and the detection accuracy can be increased.

  In the above description, the degree of contamination of the detected portion 2 is detected after the ventilation device 27 is stopped. However, the degree of contamination of the detected portion 2 is determined when ventilation in the bathroom 1 by the ventilation device 27 is performed for a certain period of time. It may be detected. Further, the drying means may be constituted by a drying device that dries only the detected portion 2. This example is also applicable to the second to fourth embodiments described above.

(Sixth embodiment)
Next, a sixth embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  In this example, a dry state detecting means for detecting that the detected part 2 is in a dry state is provided, and the dry state detecting means is constituted by a humidity sensor (not shown) provided in the bathroom 1. Moreover, the control part 19 of the to-be-detected part 2 is detected only when the humidity in the bathroom 1 falls below a predetermined value by the humidity sensor, that is, when the to-be-detected part 2 is detected to be in the dry state by the dry state detecting means. It is set to detect the degree of dirt. Thereby, only when the detected part 2 is in the same dry state, the degree of contamination of the detected part 2 can be detected, and the detection accuracy can be improved. This example can also be applied to the second to fourth embodiments described above.

(Seventh embodiment)
Next, a seventh embodiment will be described. In the following description, the same components as those in the first embodiment are given the same numbers, and redundant descriptions are omitted.

  The bathroom dirt detection device of this example shown in FIG. 11 includes a watering device 28 for watering the detected portion 2. The water spout 29 of the sprinkler 28 is located below the rear end of the counter 8 so that the water sprinkled from the sprinkler 29 hits the protection covers 14 and 17 of the detected portion 2, the light emitting unit 11 and the light receiving unit 10. The counter 8 is directed in the protruding direction.

  In addition, the control unit 19 sprays a predetermined amount of water from the water spout 29 of the water sprinkler 28 and sprays water on the detection covers 2 and the protective covers 14 and 17 of the light emitting unit 11 and the light receiving unit 10, respectively. It is set to detect the degree of contamination of the detection unit 2. Accordingly, the degree of contamination of the detected portion 2 can be detected in a state where the detected portions 2 and the protective covers 14 and 17 of the light emitting unit 11 and the light receiving unit 10 are similarly wetted, and the detection accuracy can be improved.

  In this example, not only the detected part 2 but also the protective covers 14 and 17 of the light emitting unit 11 and the light receiving unit 10 are sprinkled by the water sprinkler 28. Of these, only the detected part 2 is sprinkled. It may be a thing, or it may sprinkle water only on the protective covers 14 and 17 of the light emitting unit 11 and the light receiving unit 10, respectively. This example is also applicable to the second to fourth embodiments described above.

It is a schematic block diagram of an example of embodiment of this invention. It is sectional drawing of a light emitting unit same as the above. It is sectional drawing of a light reception unit same as the above. It is a schematic block diagram which shows the example which comprised the to-be-detected part with the reflection member. It is a schematic block diagram which shows the example which provided the light-receiving part and the light-emitting part integrally. It is a schematic block diagram of another example. It is sectional drawing of a light reception unit same as the above. Furthermore, it is a schematic block diagram of another example. Furthermore, it is a schematic block diagram of another example, (a) shows the time of dirt detection, (b) shows the time of cleaning. Furthermore, it is a schematic block diagram of another example. Furthermore, it is a schematic block diagram of another example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom 2 Detection part 2a Reflective member 3 Light emission part 4 Light reception part 5 Bathtub 6 Apron 7 Wall 24 To-be-cleaned part 25 Cleaning apparatus

Claims (11)

  A predetermined part in the bathroom is a detected part, and a light receiving part that receives light transmitted through the detected part or reflected by the detected part, and the degree of contamination of the detected part is detected based on the amount of light received by the light receiving part. A bathroom dirt detection device comprising a dirt detection means for performing the process.   The bathroom dirt detection device according to claim 1, further comprising a light emitting unit that emits light toward the detected unit.   The bathroom dirt detection device according to claim 2, wherein the light emitted from the light emitting unit toward the detected unit is a laser beam.   A light amount detecting means is provided in the bathroom, and when the light amount in the bathroom detected by the light amount detecting means is equal to or less than a predetermined amount, light is emitted from the light emitting portion to the detected portion. The bathroom dirt detection device according to claim 2 or 3, wherein the degree of dirt is detected.   5. The bathroom dirt detection device according to claim 2, wherein the light-receiving unit and the light-emitting unit are configured integrally and are detachable from a bathroom constituent member installed in the bathroom. .   6. The dirt detecting means detects the degree of dirt by comparing the amount of light received by a light receiving section with a threshold value, and comprises a threshold value changing means for changing the threshold value. The bathroom dirt detector according to claim 1.   7. The bathroom dirt detection device according to claim 1, wherein the light receiving portion is provided at a location facing a lower space of a protruding portion protruding into the bathroom from a bathroom wall, a bathtub, or an apron. 8. .   A predetermined part in the bathroom including the detected part is a cleaned part, and a cleaning device that cleans the cleaned part and the cleaning device detects that the detected part is dirty by the dirt detecting means. The bathroom dirt detection device according to any one of claims 1 to 7, further comprising control means for automatically cleaning the portion to be cleaned.   A drying means for drying the detected part, or a dry state detecting means for detecting that the detected part is in a dry state, and the dirt detecting means is configured to remove dirt on the detected part after drying the detected part by the drying means. The degree of contamination of the detected part is detected when the degree of the detection is detected or when the dry state detecting means detects that the detected part is in a dry state. The bathroom dirt detector according to claim 1.   The sprinkling device for sprinkling water on the detected part, wherein the dirt detecting means detects the degree of dirt on the detected part after water is attached to the detected part by the sprinkler. The bathroom dirt detection device according to any one of 8.   The bathroom dirt detection according to any one of claims 1 to 10, wherein a protective cover having translucency for protecting the light receiving portion is detachably disposed at a position facing the light receiving portion. apparatus.

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