JPH05322816A - Foul breath checking device - Google Patents

Abstract

PURPOSE:To enable the title device to maintain the gas detection accuracy of its gas sensor for a long period. CONSTITUTION:The title device is equipped with a heat cleaning means which cleans the surface of a gas sensor by heating and a delaying means which delays the disconnection of power supply until the heat cleaning operation of the heat cleaning means is completed when a power switch is turned off during the course of heat cleaning. In addition, a freely openable lid body 5 is fitted to the main body 4 of the device provided with a gas sensor and an air bag 15 which discharges air against the entrance of the gas sensor from its discharge opening 16 when the lid body 5 is closed is attached to the lid body 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a halitosis check device capable of checking the degree of halitosis.

[0002]

2. Description of the Related Art Conventionally, a gas sensor used in a bad breath checking device capable of checking the degree of bad breath is a component contained in exhaled breath on the surface of the gas sensor (tobacco tar, nicotine, other saliva components, etc.) ) Adheres, the sensitivity of the sensor deteriorates, so the surface must be cleaned.

As a method therefor, a heater incorporated in the sensor is heated to a temperature higher than that in a normal time to incinerate and remove deposits on the surface. Here, the heater is for heating the sensor in order to promote the reaction between the gas and the sensor.

[0004]

By the way, in order to maintain the accuracy of gas detection, cleaning before use and new deposits deposited by use are removed and stored. Therefore, it is necessary to perform cleaning again after use. .. Conventionally, in the one provided, a microcomputer is programmed so that cleaning before use is automatically performed by turning on the power of the bad breath check device.

In addition, after the use, the instruction manual states that it is stored after the cleaning operation.
Since it is necessary to wait for a while after use, there is a problem in maintaining gas detection accuracy because it is inconvenient and forgets to clean. The present invention is intended to solve the above problems, and an object of the present invention is to provide a halitosis check device capable of maintaining gas detection accuracy for a long period of time without bothering a user.

[0006]

According to the present invention, in order to achieve the above object, in a bad breath checking device having a gas sensor and a heat cleaning means for heating the surface of the gas sensor with a heater for cleaning, When the power is turned off, the power supply is delayed until the heat cleaning is completed. The delay means is provided.

Further, a lid body which is openable and closable is provided on the main body of the apparatus equipped with a gas sensor, and an air bag for ejecting air from the discharge port toward the inlet of the gas sensor when the lid body is closed is provided on the lid body. It is characterized by that.

[0008]

When the power is turned off during heat cleaning, the delay means for delaying the power off until the heat cleaning is completed has a function of delaying the heat cleaning by the delay means even if the power is turned off during heat cleaning. However, the heat cleaning can be reliably performed, and the gas detection accuracy can be maintained for a long period of time.

Further, the apparatus main body having the gas sensor is provided with a lid which can be freely opened and closed, and when the lid is closed, an air bag for ejecting air from the discharge port toward the inlet of the gas sensor is provided on the lid. In this case, by closing the lid plate, air will be discharged from the discharge port toward the gas sensor, and the discharge of this air can discharge the exhaled air that has accumulated in the vicinity of the gas sensor. The gas sensor can be automatically cleaned after use by closing the lid.

[0010]

The present invention will be described below in detail with reference to the illustrated embodiments. As shown in FIGS. 1 and 2, the bad breath checking device A is mainly configured by housing and arranging a gas sensor 2, a printed circuit board 3, a battery 14 and the like in a housing case 1.

The storage case 1 is composed of an upper case 1a, a lower case 1b and a middle case 1c.
The lower case 1b and the lower case 1b are pivoted at one end.
The upper case 1a can be opened and closed with respect to b. Here, the middle case 1c is attached to the lower case 1b,
The lower case 1b and the middle case 1c form a device body 4, and the upper case 1a forms a lid 5 that can be opened and closed. A storage space 6 is formed between the lower case 1b and the middle case 1c forming the device body 4, and the storage space 6 is divided into a plurality of partitions by a partition plate 7. Two partition plates 7 are provided in the central portion of the storage space 6, and a sensor storage portion 6a is formed between the partition plates 7 facing each other. The gas sensor 2 serving as a halitosis sensor is formed in the sensor storage portion 6a. It is housed and arranged together with the end portion of the printed circuit board 3. The front wall 8 of the sensor storage portion 6a is provided with a through hole 9 that communicates with the inside of the sensor storage portion 6a.
In addition, an exhaust port 1 for exhausting the exhaled air blown into the sensor storage portion 6a is formed in the rear wall 11 of the sensor storage portion 6a.
Two are provided. Here, the exhaust port 1 for exhaust is also provided at the end of the printed circuit board 3 arranged in the sensor storage portion 6a.
3 is provided.

Gas sensor 2 serving as the above-mentioned bad breath sensor
Has a heat cleaning means for cleaning the surface of the gas sensor 2 by heating it with a heater, and the heat cleaning means can incinerate and remove deposits adhering to the sensor surface. In conjunction with this gas sensor, the apparatus body 4 is provided with a delay means for delaying the power-off during heat cleaning until the heat cleaning is completed. Even if the power is turned off during heat cleaning, the delay means is provided. By this, heat cleaning is completed.
This delay means is programmed in the microcomputer as a power-off sub-program, separately from the main program as shown in FIG. The operating state is shown in FIG. Here, the power-off subprogram is frequently executed during the operation of the main program by interrupt processing.

After the gas sensor 2 detects the degree of bad breath, the heat cleaning means incinerates and removes the deposits on the sensor surface. Even if the power is turned off during the heat cleaning, the delay means is used. Since the heat cleaning is performed to the end, the heat cleaning is surely performed and the gas detection accuracy can be maintained for a long period of time.

A printed board housing 6b is formed on the side of the sensor housing 6a so as to be adjacent to the sensor housing 6a, and the printed board 3 is housed in the printed board housing 6b. Also, the sensor storage part 6
A battery housing portion 6c is formed on the other side of a, and the battery 14 is housed in the battery housing portion 6c so as to be freely taken out.

On the inner surface of the lid 5 which can be opened and closed, there is provided an air bag 15 formed of a bellows bag 15a which is expandable and contractible, and the air bag 15 is an air bag when the air bag 15 is reduced. A discharge port 16 for discharging the air in 15 is provided. The discharge port 16 is set at a position where air can be discharged from the expiratory air inlet port 10 toward the gas sensor 2 in the sensor storage portion 6a when the lid 5 is closed and the air bag 15 is compressed in the middle case 1c. Has been done. The air bag 15 is extended by opening the lid 5 and sucks air into the air bag 15 as indicated by an arrow in FIG.

On the outer surface of the middle case 1c, as shown in FIG. 1, a result display lamp 17 for displaying the degree of bad breath is arranged in the vicinity of the exhalation inlet 10. The result display lamps 17 are sequentially arranged in green, green, yellow, and red from one end, and the lamps of any color are blinked based on the measurement result. A power button 18, a preparing lamp 19, and a measurable display lamp 20 are provided on the surface of the middle case 1c.

When the lid 5 is opened and the power button 18 is turned on during use, the preparing lamp 19 blinks for about 30 seconds, the preparing lamp 19 goes out, and the measurable display lamp 2
It can be measured when 0 is lit.
Then, when the breath is blown into the breath blowing port 10, the degree of bad breath is measured by the bad breath sensor and the result is displayed on the result display lamp 17. Next, after use, the gas sensor 2 is heat-cleaned by the heat-cleaning means.
Even if 8 is operated and turned off during the cleaning, the heat cleaning is performed by the delay means for a predetermined time regardless of whether the power button 18 is on or off. Further, when the lid body 5 is closed after use, air is ejected toward the halitosis sensor from the ejection port 16 provided in the air bag 15 through the expiratory air inlet port 10 at the same time as the lid body 5 is closed, as shown in FIG. ) As shown by the middle arrow, the exhaled air that has accumulated in the vicinity of the halitosis sensor is discharged from the exhaust port 12 and removed.

After the measurement, the gas sensor 2 is automatically cleaned so that the gas detection accuracy can be maintained for a long period of time.

[0019]

As described above, the present invention provides a breath odor check device having a gas sensor and a heat cleaning means for heating the surface of the gas sensor with a heater for cleaning, when the power is turned off during heat cleaning.
Since the delay means for delaying the power off until the heat cleaning is completed is provided, even if the power is turned off during the heat cleaning, the heat cleaning is completed by the delay means and the heat cleaning is surely performed. The gas detection accuracy can be maintained over a long period of time.

Further, according to a second aspect of the present invention, an apparatus main body equipped with a gas sensor is provided with a lid which can be opened and closed.
Since the lid is equipped with an air bag that discharges air from the outlet toward the inlet of the gas sensor when the lid is closed, by closing the lid plate after checking the bad breath, it is possible to direct it toward the gas sensor from the outlet. Air will be discharged, and the discharge of this air will allow the exhaled breath that has accumulated in the vicinity of the gas sensor to be discharged.By closing the lid, the gas sensor can be automatically cleaned after use. Therefore, it is possible to maintain the gas detection accuracy for a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

2A and 2B show the same operation state as above, FIG. 2A is a cross-sectional view with the cover plate open, and FIG. 2B is a cross-sectional view with the cover plate closed.

FIG. 3 is a flowchart showing an operation of a main program.

FIG. 4 is a flowchart showing the operation of a subprogram.

[Explanation of symbols]

 2 Gas sensor 4 Device body 5 Lid body 15 Air bag 16 Discharge port

Claims (2)

[Claims] 1. A breath odor checking device having a gas sensor and a heat cleaning means for heating the surface of the gas sensor with a heater for cleaning, and when the power is off during heat cleaning, the power off is delayed until the heat cleaning is completed. A halitosis check device comprising delay means. 2. An apparatus main body having a gas sensor is provided with a lid that can be opened and closed, and an air bag that discharges air from a discharge port toward an inlet of the gas sensor when the lid is closed is provided on the lid. A bad breath checking device.