JPH08276000A - Deodorizing and sterilizing equipment - Google Patents

Abstract

PURPOSE: To arrange a man sensor at a prescribed angle to a casing to precisely detect a person in a prescribed direction, and prevent the penetration of dust into a converging part by arranging the man sensor having a cover and a base on the upper and lower part so that the man sensor is exposed to the hole part of the casing. CONSTITUTION: A hole part 49a is formed in a proper position, for example, an angle part of a casing 2 for a deodorizing and sterilizing equipment body, and a man sensor 4a is arranged in the casing 2 so that its converging part 37 is exposed to the hole part 49a. The man sensor 4a has a cover 52 and a base 42 on the upper and lower parts, and the converging part 37 is provided so as to substantially make contact with the opening part 55 of the cover 52. Thus, the dust passing through the clearance between the converging part 37 and the opening part 55 is minimized. Further, the cover 52 is provided so that its bottom surface makes contact with the surface of a circuit board 31, whereby the circuit board 31 is nipped by the bottom surface of the cover 52 and the placing part 43 of the base 42, so that the circuit board 31 can be firmly fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing and sterilizing device for deodorizing and sterilizing indoor air and the like by using an ozone lamp which generates ozone.

[0002]

2. Description of the Related Art An ozone lamp composed of a mercury lamp which emits ultraviolet rays having a wavelength of about 185 nm and a wavelength of about 2
Using a germicidal lamp composed of a mercury lamp that emits 50 nm ultraviolet light, or using an ultraviolet lamp that emits ultraviolet light of these wavelengths at the same time, the air in a place where a relatively large number of people such as hotels, inns, and hospitals enter and exit An apparatus for deodorizing and sterilizing is disclosed in, for example, JP-A-61-244367 and JP-A-61-279248.

Further, when the ozone concentration in the air is high, there is a problem that the human body such as a headache is affected, and the ozone concentration in the air is detected by an ozone sensor, and the detected ozone concentration is higher than a preset value. In some cases, the ozone lamp is turned off to stop the generation of ozone.

[0004]

However, in the above-mentioned device, ozone is generated even when a person approaches, so that the air containing ozone directly touches the human body, which adversely affects the human body such as headache. Therefore, the present inventor installed a human sensor (infrared sensor) in the center of the front surface of the apparatus, and controlled so that the ozone generation was stopped when the human sensor detected. However, this person sensor has only a detection angle of about 100 degrees around the front surface of the apparatus, and has a first drawback that it does not detect a person outside this angle.

Further, in this human sensor, a sensor portion is placed on a circuit board, and boss portions (several pieces) of a light collecting portion covering the sensor portion are inserted into the circuit board. Therefore, there is a second drawback that dust and the like are easily infiltrated through the gap between the light collecting portion and the circuit board. Further, this human sensor is fixed to the front surface of the device with the light collecting portion as a reference surface, but as described above, the light collecting portion and the circuit board are loose. As a result, there is a third drawback that the circuit board (in particular, the sensor portion mounted on the circuit board) is likely to move after mounting the device.

Therefore, in consideration of the above-mentioned conventional drawbacks, the present invention is a human sensor capable of detecting the approach of a human body in a predetermined direction, preventing dust and the like from entering the condensing portion, and preventing the circuit board from moving easily. A deodorizing and sterilizing apparatus having the above is provided.

[0007]

In order to solve the above-mentioned problems, the present invention provides a casing having blow-out holes, an ozone lamp which is provided in the casing and generates ozone to the outside through the blow-out holes, A human sensor for detecting the approach of a human body is provided, and a cover and a base are provided above and below the human sensor so that the human sensor is exposed at a hole formed in the casing, and the peripheral edge of the cover and the peripheral edge of the base are provided. The peripheral edge of the base is obliquely formed on the casing so that the peripheral edge of the hole portion of the casing is sandwiched between and, and the cover is fixed to the base.

More preferably, the human sensor is composed of a circuit board on which the sensor section is mounted and a light collecting section provided on the circuit board, and the opening formed in the cover substantially contacts the light collecting section.
The cover is fixed to the base so that the circuit board is sandwiched between the bottom surface of the cover and the mounting portion of the base.

[0009]

As described above, the cover and the base are provided above and below the human sensor so that the human sensor is exposed at the hole of the casing. Then, the peripheral edge of the base is formed obliquely across the casing so that the peripheral edge of the casing hole is sandwiched between the peripheral edge of the cover and the peripheral edge of the base, and the cover is fixed to the base. Therefore, the base can be easily fixed obliquely to the casing, the human sensor can be arranged at a predetermined angle with respect to the casing, and detection in a predetermined direction can be performed.

More preferably, since the opening formed in the cover substantially contacts the light collecting portion of the human sensor, it is difficult for dust and the like to enter through the gap between the opening and the light collecting portion, and the dust and the like inside the light collecting portion. It is hard to enter. Then, the cover is fixed to the base so that the circuit board of the human sensor is sandwiched between the bottom surface of the cover and the mounting portion of the base. Therefore, since the circuit board is sufficiently fixed and does not move after the device is attached, the sensor portion on the circuit board is maintained at a predetermined position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 1 is a deodorizing sterilizer main body, and a blow-out hole 3 consisting of a plurality of slit holes is formed in the upper front portion of a casing 2. Human sensors 4a and 4b composed of infrared sensors and ultrasonic sensors are mounted on the left and right sides of the front face, and intake holes 5 consisting of a plurality of slit holes are also formed on the bottom face, and inside the casing 2, Intake hole 5
The partition plate 7 is provided with a convex air passage 6 that communicates with the above-mentioned blowout hole 3.
It is formed by.

Reference numeral 8 denotes an ozone lamp horizontally disposed above the intake hole 5 of the air passage 6, for example, 184.
It is composed of a quartz glass low-pressure mercury lamp that emits ultraviolet rays having a wavelength of 9 nm.

Reference numeral 9 denotes a circulation fan disposed inside the blowout hole 3 of the ventilation passage 6, and after the air in the room or the like is sucked into the ventilation passage 6 from the intake hole 5 by rotation, the circulation fan is placed around the ozone lamp 8. It is configured so as to circulate and jet again into the room or the like from the blowout hole 3.

A partition plate 10 is located between the intake hole 5 of the ventilation passage 6 and the ozone lamp 8 and is arranged so as to partition the inside of the ventilation passage 6 substantially parallel to the ozone lamp. An ozone sensor 11 for detecting an ozone concentration in the range of 0 to 0.1 ppm, for example, is mounted on the surface opposite to.

Reference numerals 12 and 13 denote control circuit boards arranged in a space between the casing 2 and the partition plate 7. As shown in FIG. 3, a commercial power source 14 is a power source mounted on a side surface of the casing 2. A power supply circuit 16 for converting into a DC power supply of a predetermined constant voltage is connected via a switch 15, and a switching transistor is connected to the output of a diode bridge 17 of this power supply circuit 16.
The circulation fan 9 is connected via 18 and a control circuit 19 constituted by a microcomputer is connected to the constant voltage output of the power supply circuit 16.

The input of the control circuit 19 is connected to the outputs of the human sensors 4a and 4b and the ozone sensor 11 and the maintenance switch 20, and the output is, for example, an LED.
Display lamp 21 and the above transistor 18,
Also, a driving transistor 25 of a relay 24 for controlling a relay contact 23 connected between the commercial power source 14 and the lamp lighting circuit 22 is connected.

A light emitting diode 27 is connected to the lamp lighting circuit 22 through the conduction detecting diode 26 and the ozone lamp 8 and constitutes the conduction detecting diode 26.
A light-receiving element 28 is opposed to the light-receiving element, and the output of this light-receiving element is connected to the input of the control circuit 19.

The energization detection diode 26 has a wiring 29 for connecting the lamp lighting circuit 22 and the ozone lamp 8.
When the lamp lighting circuit 22 is turned on, an AC voltage of 1500 to 1800 V is applied to the wiring 29, but almost no current flows.
The current of around 30mA flows at 0V and the above light emitting diode
Since 27 lights up, this is detected by the output of the light receiving element 28.

Next, the characteristic structure of this embodiment will be described with reference to FIGS. 4 is a sectional view taken along line AA in FIG. 1, and FIG. 5 is an exploded perspective view of the portion shown in FIG. In these figures, the human sensor 4a is shown as the front surface 30 of the casing 2.
On the other hand, it is fixed by tilting outward (for example, an angle of 20 degrees).

The human sensor 4a has a circuit board 31.
The sensor unit 32 is fixed to the front surface of the circuit board 31 at substantially the center thereof. Capacitors 33 and 34 are fixed on the front surface of the circuit board 31, and electric components such as resistors 35 and 36 are fixed on the back surface. The light collecting portion 37 has a tip portion 38 whose tip is formed in a substantially dome shape, a base portion 39 which is continuous with the tip portion 38 and which is formed in a substantially box shape, and extends downward from an appropriate position of the base portion 39.
It has individual bosses 40 and 41 and is made of, for example, polyethylene resin or the like. The sensor unit 32 is composed of, for example, a light receiving element, and detects only infrared light. The human sensor 4a is configured by these components.

The base 42 is made of ABS resin, for example, and is provided below the human sensor 4a. Specifically, the base 42 has a step portion, that is, a mounting portion 43 formed at a predetermined height from the bottom surface, and the circuit board 31 is arranged on the mounting portion 43. Bosses 44 and 45 are formed at appropriate places on the base 42, and holes are formed in the bosses 44 and 45.

On the peripheral edge of the base 42, three side walls 47, 48, 49 extending substantially perpendicular to the bottom 46 are formed. The end surface of the side wall 48 is obliquely formed so as to form an angle (illustrated by an angle B) of about 110 degrees with respect to one side surface.

A hole 49a is provided at an appropriate position of the casing 2, for example, a bent portion 50 is formed at a part near the hole 49a, and a bent portion 5 is formed at another portion near the hole 49a.
1 is formed.

The cover 52 is made of ABS resin,
Inner surfaces of the peripheral edges 53 and 53a are formed along the outer surface of the casing 2, and an intermediate portion 54 is formed at an intermediate position of the cover 52. An opening 55 is formed in the intermediate portion 54, bosses 56 and 57 are formed in the lower portion of the cover 52, and pilot holes are formed in the bosses 56 and 57.

The bosses 56 and 57 of the cover 52 are positioned above the bosses 44 and 45 of the base 42, respectively, and both are fastened with screws 58 and 58. In this state, the peripheral edge of the hole portion 49a of the casing 2 is sandwiched and fixed between the peripheral edge 53 of the cover 52 and the peripheral edge of the base 42 (that is, the end surfaces of the side walls 47, 48, 49). The inner surface of the other peripheral edge 53a of the cover 52 is in contact with the outer surface of the peripheral edge of the casing 2 located near the bent portion 51. The peripheral edge of the base 42 (the end surface of the side wall 48) is the casing 2
The cover 52 is fixed to the base 42.

As described above, the light collecting portion 37 of the human sensor 4a is provided with the cover 52 and the base 42 above and below the human sensor 4a so that it is exposed at the hole 49a of the casing 2. Desirably, the light collecting portion 37 of the human sensor 4a is provided so as to substantially contact the opening 55 of the cover 52, so that dust and the like passing through the gap between the light collecting portion 37 and the opening 55 is reduced. As a result, dust and the like that enter the light collecting unit 37 are reduced.

More preferably, the bottom surface of the cover 52 (that is, the bottom surfaces of the boss portions 56 and 57) is provided so as to contact the surface of the circuit board 31. By doing so, the circuit board 31 is sandwiched between the bottom surface of the cover 52 and the mounting portion 43 of the base 42, so that the circuit board 31 is sufficiently fixed.
As a result, since the circuit board 31 does not move after the device is mounted, the sensor portion 32 on the circuit board 31 maintains a predetermined position and maintains a predetermined detection angle.

Next, referring again to FIG. 1, even if the detection angle of one human sensor 4a or 4b is about 100 degrees, the human sensors 4a and 4b are inclined outwardly from each other. The detection angle is as wide as 140 degrees.

The control circuit 19 shown in FIG. 3 detects that the human sensors 4a and 4b detect the approach of a human body when a predetermined voltage is applied to the ozone lamp 8 and ozone is generated.
The ozone lamp 8 is controlled to stop energization.

As described above, the pair of human sensors 4a and 4b located apart from the casing 2 are provided on the front surface 3 of the casing 2.
Since they are provided so as to incline outward with respect to 0, the angles (range) detected by these human sensors 4a and 4b become wider. Therefore, the approach of the human body can be detected in a wide range, and the control circuit 19 for stopping the ozone generation by the detection is provided, so that the direct influence of the ozone generation on the human body can be prevented.

The operation of the control circuit 19 of the apparatus of this embodiment will be described again with reference to FIG. When the power switch 15 is turned on first, the power LED in the display lamp 21
Lights up, the fan motor of the circulation fan 9 rotates, and the ozone lamp 8 lights up. As a result, ozone is generated, and the circulation fan 9 sucks the external air through the intake hole 5 of the casing 2. Then, after the external air circulates around the ozone lamp 8 for deodorization and sterilization, the casing 2
Air containing ozone is discharged to the outside through the blow-out holes 3 of the.

Next, the ozone concentration is measured by the output of the ozone sensor 11, and if the measured value is less than a predetermined value, it is determined by the outputs of the human sensors 4a and 4b whether or not the human body is approaching. If it is determined that the human body is approaching, the ozone lamp 8 is turned off, the circulation fan 9 is stopped after a predetermined time has elapsed, and the discharge of the air containing ozone to the outside is stopped.

On the other hand, the control circuit 19 uses the ozone sensor 1
When the analog output of 1 drops below a predetermined value (for example, 0.4 V), ozone sensor check means is provided for interrupting the operation by stopping the energization of the ozone lamp 8 and the circulation fan 9 as a failure of the ozone sensor 11. .

Further, the ozone sensor checking means opens the relay contact 23 at the same time as the detection of the human body approach by the human sensors 4a and 4b during deodorization / sterilization by starting the operation and turning on the ozone lamp 8. Ozone lamp 8
If the output of the ozone sensor 11 is stopped and the human body is no longer detected by the human sensors 4a and 4b, the relay contact is turned off after the lamp is compulsorily turned off (for example, 3 minutes) after the detection is stopped. 23 is closed and the ozone lamp 8 is turned on. In addition, when a predetermined time (for example, 5 minutes) elapses after this lighting, the output of the ozone sensor 11 is detected to detect the ozone concentration in the air.

Therefore, the control circuit 19 controls the human sensors 4a and 4
It is configured so that the output of the ozone sensor 11 is not detected for a predetermined time after the ozone lamp 8 is turned on after the approach of the human body is detected by b.

As a result, even if the human body approaches and the cigarette smoke is generated due to smoking and is sucked around the ozone sensor 11 and the output thereof is temporarily lowered, the ozone sensor becomes unstable. Since the output of 11 is not detected and abnormal processing or ozone concentration measurement is not performed, operation can be continued without stopping operation due to abnormal processing.

[0037]

As described above, the cover and the base are provided above and below the human sensor so that the human sensor is exposed at the hole of the casing. The peripheral edge of the base is obliquely formed on the casing so as to sandwich the peripheral edge of the cover and the peripheral edge of the base, and the cover is fixed to the base. Therefore, the base can be easily fixed obliquely to the casing, the human sensor can be arranged at a predetermined angle with respect to the casing, and detection in a predetermined direction can be performed.

Therefore, even if the device is fixed at a predetermined position in the room, by determining the angle of the base with respect to the casing to a predetermined angle, that is, by arranging the human sensor at a predetermined angle with respect to the casing, It is possible to detect the approach of a human body in a predetermined direction. Then, when the human sensor detects it, by stopping the generation of ozone, it is possible to prevent the air containing ozone from directly touching the human body.

More preferably, since the opening formed in the cover substantially contacts the light collecting portion of the human sensor, it is difficult for dust and the like to enter the light collecting portion. As a result, it is possible to prevent the deterioration of the detection performance of the human body approach due to the accumulation of dust on the sensor unit in the light collecting unit.

The cover is fixed to the base so that the circuit board of the human sensor is sandwiched between the bottom surface of the cover and the mounting portion of the base. Therefore, the circuit board is sufficiently fixed and does not move after mounting the device, so that the sensor portion on the circuit board also maintains a predetermined position. As a result, the human body approach detection direction in a predetermined direction can be maintained.

Further, by providing a pair of the above-mentioned human sensors separately from each other in the casing, and by sloping downward with respect to the front surface of the casing, the angles (range) detected by these human sensors are widened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a deodorizing and sterilizing apparatus according to an embodiment of the present invention.

FIG. 2 is a front vertical sectional view of the deodorizing and sterilizing apparatus.

FIG. 3 is an electric circuit diagram of the deodorization sterilizer.

4 is a cross-sectional view taken along the line AA of FIG.

5 is an exploded perspective view of the portion shown in FIG. 4. FIG.

[Explanation of symbols]

 2 Casing 3 Blow-out holes 4a, 4b Human sensor 8 Ozone lamp 19 Control circuit 42 Base 49a Casing hole 52 Cover

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Mitsuhiko Yamane 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A human sensor, comprising: a casing having a blowout hole, an ozone lamp provided inside thereof, for generating ozone to the outside through the blowout hole, and a human sensor for detecting the approach of a human body. A cover and a base are respectively provided above and below the human sensor so that the holes are exposed in the hole formed in the casing, and the hole of the casing is provided between the peripheral edge of the cover and the peripheral edge of the base. A deodorizing and sterilizing apparatus, wherein a peripheral edge of the base is obliquely formed on the casing so as to sandwich the peripheral edge of the base, and the cover is fixed to the base. 2. The human sensor comprises a circuit board on which a sensor section is placed and a light collecting section provided thereon, and an opening formed in the cover substantially abuts on the light collecting section. The deodorizing and sterilizing apparatus according to claim 1, wherein the cover is fixed to the base so that the circuit board is sandwiched between a bottom surface of the cover and a mounting portion of the base.