KR102438304B1 - Air quality sensing device - Google Patents

Abstract

The present invention relates to an air quality measurement device. The air quality measurement device of the present invention comprises: a front housing; a display panel; a rear housing; and an intermediate housing, wherein a printed circuit board is arranged inside the air quality measurement device, and a sensor member for measuring air quality is arranged on the rear surface of the printed circuit board. According to the present invention, the accuracy of air quality measurement can be increased.

Description

Air quality measuring device {AIR QUALITY SENSING DEVICE}

The present invention relates to an air quality measuring device, and more particularly, to an air quality measuring device for measuring the concentration of fine dust and carbon dioxide in the air.

Fine dust, which has recently become a problem, is a substance with a particle size of 50 μm or less, and when it enters the human body through respiration, it causes various diseases.

The fine dust is generated during combustion of fossil fuels such as coal and petroleum, and is mainly generated in factories and automobiles.

On the other hand, volatile organic compounds (VOCs) refer to substances that cause photochemical reactions in the atmosphere by the action of nitrogen oxides and sunlight to generate ozone or photochemical oxidizing substances, thereby causing photochemical smog.

The volatile organic compounds as described above can also be generated in indoor furniture and building materials, and fine dust is a problem because it is introduced into the room from the outside and deteriorates the environment.

In this situation, recently, air quality measuring devices including fine dust, volatile organic compounds, and carbon dioxide concentrations have been developed and distributed.

1 is a front view (a) and a rear view (a) and a rear view ( b).

In the device, external air is introduced into the air inlet (i1) formed at the upper end of the device, and through the flow path (S1) formed between the external housing 110 and the printed circuit board 120 of the device, the printing It is configured to flow to the rear surface of the circuit board 120 .

As described above, the air flowing to the rear surface of the printed circuit board 120 flows into the inlet h1 formed in the housing 130 containing the fine dust sensor, and flows out to the outlet h2 by the blower fan. do.

However, in the device, the air introduced into the air inlet (i1) from the outside flows to the surface of the printed circuit board 120 to the lower end of the device, and then through the flow passage (S1) to the printed circuit board (120) Since it flows to the rear surface of the , heat generated from the printed circuit board 120 is transferred in this process.

In the end, these points can become factors affecting the measured values such as air temperature and humidity and fine dust concentration.

In addition, moisture may penetrate through the air inlet (i1) formed on the upper surface of the outer housing 110 in the device.

This reduces the service life of the device and greatly affects the temperature and humidity measurement values of the air.

In addition, in the device, the organic compound sensor, the carbon dioxide sensor, and the temperature and humidity sensor are disposed on the front side of the printed circuit board, and the fine dust sensor is disposed on the back side, which increases the thickness of the entire device.

The present invention has been devised to solve the above-described problems, and an object of the present invention is to provide an air quality measuring device in which an air flow path flowing in and flowing from the outside for air quality measurement is configured very simply.

Another object of the present invention is to provide an air quality measuring device configured so that the air flow space is clearly separated from other spaces in the device so that other components of the device do not affect the air flowing in from the outside.

Another object of the present invention is to provide an air quality measuring device configured to be slimmer and more compact by reducing the thickness of the entire device.

Another object of the present invention is to provide an air quality measuring device configured to efficiently dissipate heat generated from the device while preventing moisture penetration into the device.

An air quality measuring device according to the present invention for achieving the above object includes a front housing forming a front exterior of the air quality measuring device, a display panel disposed on the front housing, and a rear housing forming a rear surface of the air quality measuring device, and an intermediate housing disposed between the front housing and the rear housing, wherein the front housing and the intermediate housing are fitted, the intermediate housing and the rear housing are fitted, and a printed circuit board is disposed inside the air quality measuring device circuit parts for driving the air quality measuring device are disposed on the front surface of the printed circuit board, a sensor member for measuring air quality is disposed on the rear surface of the printed circuit board, and air is introduced into the side of the intermediate housing An air inlet for air inlet and an air outlet for air outlet are formed, the sensor member includes a sensor member housing, and the sensor member housing includes a sensor member housing inlet for inflow of air and an air outlet for outflow of air. A sensor member housing outlet is formed, and a housing fan for flowing air is installed in the sensor member housing to introduce air through the sensor member housing inlet, and to discharge air through the sensor member housing outlet. An inlet partition and an outlet partition are formed inside the air inlet and the air outlet at the side of the intermediate housing, and the air introduced into the air inlet flows into the sensor member housing inlet through the inlet partition, The air discharged through the sensor member housing outlet is discharged to the air outlet through the outlet bulkhead, and an air flow blocking barrier is formed across the inlet bulkhead and the outlet bulkhead, and the air flow is blocked in the airflow blocking bulkhead. It is characterized in that the edge portion of the printed circuit board is arranged in contact.

Preferably, an edge portion of the printed circuit board is arranged in contact with the air flow blocking barrier, so that the space inside the inlet and outlet barriers and the space in the front of the printed circuit board are separated and separated.

Here, the sensor member housing may be formed in a flat hexahedral shape, so that portions other than the sensor member housing inlet and the sensor member housing outlet may be sealed.

In addition, in the sensor member housing, an air flow blocking protrusion may be formed on the side of the inlet partition wall and the outlet partition wall to face the air flow blocking partition wall.

In addition, a sensor member accommodating recess for accommodating the sensor member may be formed in a portion of the rear housing where the sensor member is disposed.

In addition, rear housing ventilation openings may be formed in the rear housing opposite to the portion where the sensor member is disposed.

Preferably, the intermediate housing includes support partition walls and substrate support partition walls across the support partition walls.

On the other hand, a front panel coupling opening for coupling the front panel may be formed in the edge portion of the front housing.

In addition, a front housing coupling protrusion is formed protruding from the rear surface of the front panel coupling opening, and an intermediate housing coupling protrusion is also formed at a position corresponding to the intermediate housing, so that the intermediate housing coupling protrusion is formed on the front housing coupling protrusion. It can be coupled by being inserted into the protrusion opening.

Preferably, a heat dissipation member is disposed between the front housing and the display panel.

Here, the heat dissipation member may be formed of a metal plate, and the edge portion of the edge of the heat dissipation member may be bent to be fitted to the front housing.

Also, a front housing vent opening may be formed at one side of the front housing, and a side portion of the heat dissipation member may be configured to be exposed toward the printed circuit board through the front housing vent opening.

Preferably, a heat dissipation opening is formed in an edge portion of the heat dissipation member.

In addition, an edge concave portion may be formed in an edge portion of the heat dissipation member.

In addition, front housing heat dissipation recesses may be formed on a surface of the front housing facing the heat dissipation member.

In addition, lattice-shaped surface concave portions may be formed on the surface of the heat dissipation member.

According to the present invention, the air flow path flowing in and flowing from the outside is configured very simply, so that the accuracy of air quality measurement can be increased.

In addition, the air flow path is clearly separated from other spaces inside the device, so that air introduced from the outside and the components of the device do not affect each other.

In addition, by effectively dissipating heat generated from the device while preventing moisture from penetrating into the device, the service life of the device can be increased.

In addition, by reducing the thickness of the entire device, it can be configured to be slimmer and more compact.

The accompanying drawings are for understanding the technical spirit of the present invention together with the detailed description of the present invention, so the present invention should not be construed as limited to the matters shown in the following drawings.
1 is a front view (a) and a rear view (b) of a conventional air quality measuring device,
2 is a front perspective view of an air quality measuring device according to the present invention;
3 is an exploded perspective view of the measuring device;
4 is a perspective view of a state in which the front housing is removed from the measuring device;
5 is a rear perspective view of a state in which the rear housing is removed from the measuring device;
6 is a rear perspective view of the measuring device according to another embodiment of the present invention;
7 is a perspective view of an intermediate housing included in the measuring device as viewed from below;
8 is a perspective view of the intermediate housing viewed from the top down;
9 is a perspective view of a rear housing included in the measuring device;
10 is a perspective view of the front housing included in the measuring device as viewed from the front;
11 is a perspective view of a state in which the front housing is coupled to the intermediate housing as viewed from the front;
12 is an exploded perspective view of the front housing, the display panel, and the front panel included in the measuring device;
13 is an exploded perspective view of a front housing, a heat dissipation member, and a display panel included in the measuring device;
14 is a perspective view of a state in which a heat dissipation member is coupled to the front housing;
15 is a perspective view of a front housing according to another embodiment of the present invention;
16 is a perspective view of a heat dissipation member according to another embodiment of the present invention.

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

Prior to this, the terms used in the present specification and claims should not be construed as being limited in the dictionary meaning, and based on the principle that the inventor can appropriately define the concept of the term to describe his invention in the best way. , should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Accordingly, the configurations shown in the embodiments and drawings described in the present specification are only preferred embodiments of the present invention, and do not express all the technical ideas of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that water and variations may exist.

2 is a front perspective view of an air quality measuring device according to the present invention, FIG. 3 is an exploded perspective view of the measuring device, FIG. 4 is a perspective view of a state in which the front housing is removed from the measuring device, and FIG. 5 is the measuring device is a rear perspective view of the state in which the rear housing is removed, FIG. 6 is a rear perspective view of the measuring device according to another embodiment of the present invention, and FIG. 7 is a perspective view of the intermediate housing included in the measuring device looking up from below. 8 is a perspective view of the intermediate housing viewed from the top down, FIG. 9 is a perspective view of the rear housing included in the measuring device, and FIG. 10 is a perspective view of the front housing included in the measuring device as viewed from the front 11 is a perspective view of a state in which the front housing is coupled to the intermediate housing as viewed from the front, FIG. 12 is an exploded perspective view of the front housing, the display panel and the front panel included in the measuring device, and FIG. 13 is the It is an exploded perspective view of the front housing, the heat dissipation member and the display panel included in the measuring device, FIG. 14 is a perspective view of a state in which the heat dissipation member is coupled to the front housing, and FIG. 15 is a perspective view of the front housing according to another embodiment of the present invention and FIG. 16 is a perspective view of a heat dissipation member according to another embodiment of the present invention.

2 to 5 , the air quality measuring device according to the present invention includes a front housing 12 forming a front exterior of the air quality measuring device, a display panel 13 disposed on the front housing 12, and the air quality a rear housing (16) forming a rear surface of the measuring device, and an intermediate housing (14) disposed between the front housing (12) and the rear housing (16), the front housing (12) and the intermediate housing (14) ) is fitted, the intermediate housing 14 and the rear housing 16 are fitted, and a printed circuit board (P) is disposed inside the air quality measuring device, and the front surface of the printed circuit board (P) is Circuit parts for driving the air quality measuring device are disposed, a sensor member 17 for measuring air quality is disposed on the rear surface of the printed circuit board P, and air is introduced at the side of the intermediate housing 14 An air inlet 142 for and an air outlet 144 for the outflow of air are formed, the sensor member 17 includes a sensor member housing 172, and the sensor member housing 172 includes A sensor member housing inlet 174 for inflow of air and a sensor member housing outlet 176 for outflow of air are formed, and the sensor member housing 172 includes a housing fan 178 for flowing air. is installed, and is configured to introduce air through the sensor member housing inlet 174 and discharge air through the sensor member housing outlet 176, and the air inlet from the side of the intermediate housing 14 Inlet partition walls 145 and 146 and outlet partition walls 146 and 147 are formed inside the 142 and the air outlet 144 , and the air introduced into the air inlet 142 is supplied to the inlet partition wall. The air introduced into the sensor member housing inlet 174 through 145 and 146, and discharged through the sensor member housing outlet 176, passes through the outlet partition walls 146 and 147 to the air outlet. It is discharged to 144, and an air flow blocking barrier 148 is formed across the inlet bulkheads 145 and 146 and the outlet bulkheads 146 and 147, It is characterized in that the edge portion (E) of the printed circuit board (P) is disposed in contact with the base flow blocking barrier rib (148).

The front housing 12 is a configuration for forming the front exterior of the air quality measuring device according to the present invention.

The front housing 12 is made of a synthetic resin material and is formed in a substantially rectangular frame shape, and a display panel 13 for displaying temperature, humidity, fine dust concentration, etc. with letters and numbers is disposed therein.

The display panel 13 may be configured as an LCD display panel.

In addition, a front panel 11 formed of a synthetic resin material is disposed in front of the display panel 13 .

An intermediate housing 14 is disposed between the front housing 12 and the rear housing 16 .

The intermediate housing 14 is also made of synthetic resin and is formed in a substantially rectangular frame shape, and is coupled to the front housing 12 by a fitting method.

An air inlet 142 for inflow of external air and an air outlet 144 for outflow of air are formed on the side of the intermediate housing 14 .

The printed circuit board (P) for driving the air quality measuring device is disposed in the middle housing (14).

Various circuit components for driving the air quality measuring device are disposed on the front surface of the printed circuit board (P), and the sensor member 17 for measuring air quality is disposed on the rear surface of the printed circuit board (P).

5, the sensor member 17 includes a sensor member housing 172 formed in a flat hexahedral shape, and various sensors for measuring air quality are disposed inside the sensor member housing 172 .

The various sensors are, for example, a fine dust concentration measuring sensor for measuring the concentration of fine dust in the air, a temperature measuring sensor for measuring temperature, a carbon dioxide concentration measuring sensor for measuring the carbon dioxide concentration, and measuring the concentration of organic compounds It may include a sensor and the like for

The sensor member housing 172 has a sensor member housing inlet 174 for inflow of air and a sensor member housing outlet 176 for outflow.

In addition, a housing fan 178 for flowing air is installed inside the sensor member housing 172 .

Thus, by driving the housing fan 178 , air is introduced through the sensor member housing inlet 174 , and air is discharged through the sensor member housing outlet 176 .

And, in the process of air flowing through the sensor member housing inlet 174 and the sensor member housing outlet 176 , it is configured to pass through various sensors disposed inside the sensor member housing 172 .

Preferably, in the sensor member housing 172, portions other than the sensor member housing inlet 174 and the sensor member housing outlet 176 are configured to be sealed.

On the other hand, as shown in FIGS. 3 to 5 , inside the air inlet 142 and the air outlet 144 at the side of the intermediate housing 14 are inlet partition walls 145 and 146 and outlet partition walls. (146, 147) is formed.

Thus, the air introduced into the air inlet 142 formed on the side of the intermediate housing 14 flows to the sensor member housing inlet 174 through the inlet partition walls 145 and 146 .

By the inlet partition walls 145 and 146, the air introduced into the air inlet 142 does not flow from the rear surface of the printed circuit board P to an area other than the sensor member housing 172, and is completely The sensor member housing inlet portion 174 may be guided to flow.

And, the air introduced into the sensor member housing inlet 174 as described above flows inside the sensor member housing 172 formed in a sealed state, and is discharged through the sensor member housing outlet 176. , is completely guided and discharged to the air outlet 144 through the outlet partition walls 146 and 147 .

Thus, the air introduced into the air inlet 142 formed on the side of the intermediate housing 14 does not flow from the rear region of the printed circuit board P to other regions, and the sensor member housing 172 inside It can be discharged after flowing.

With this configuration, since the external air flows only into the sensor member housing 172, it is not affected by various circuit components included in the air quality measuring device according to the present invention.

Thus, it is possible to increase the accuracy of the measurement of air quality including the temperature and humidity of the outside air and the concentration of fine dust.

In addition, in the state in which the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 are formed as described above, air flows across the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147. A barrier rib 148 is formed.

And, the edge portion (E) of the printed circuit board (P) is disposed in contact with the air flow blocking barrier rib (148).

In the state in which the air flow blocking partition 148 is formed across the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 as described above, the printed circuit board (P) is formed on the air flow blocking partition wall 148. ) by the edge portion (E) is arranged in contact, the printed circuit board (P) serves as a barrier against the air flow.

Thus, the space inside the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 and the front space of the printed circuit board P may be separated and blocked.

By the configuration of the present invention, it is possible to prevent the air inside the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 from flowing toward the front space side of the printed circuit board (P).

On the other hand, in order to more thoroughly separate the space partitioned by the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 from other spaces inside the air quality measuring device according to the present invention, the As described above, the air flow blocking protrusion 175 may be formed in the sensor member housing 172 .

The air flow blocking protrusion 175 is disposed to face the air flow blocking partition wall 148 in a state in which it protrudes toward the inlet partition walls 145 and 146 and the outlet partition walls 146 and 147 .

Meanwhile, as shown in FIGS. 7 and 8 , support partition walls 1452 and substrate support partition walls 1454 are formed in the intermediate housing 14 across the support partition walls 1452 .

Then, the edge portion of the printed circuit board (P) is disposed in contact with the substrate support partition wall (1454).

Thus, the printed circuit board (P) can be stably disposed inside the intermediate housing (14).

And, as shown in FIG. 9, the rear housing 16 is also made of synthetic resin and is formed in a rectangular shape as a whole.

The rear housing 16 is fitted on the rear surface of the intermediate housing 14, and a screw may be additionally coupled to secure bonding strength.

A sensor member accommodating recess 162 for accommodating the sensor member may be formed in a portion of the rear housing 16 where the sensor member 17 is disposed.

Since the sensor member 17 formed in the flat hexahedron shape is disposed while being accommodated in the sensor member accommodating recess 162 , the thickness of the entire device can be reduced.

In addition, rear housing ventilation openings 164 may be formed at the opposite side of the portion where the sensor member 17 is disposed in the rear housing 16 .

Thus, external air flows to the rear surface of the printed circuit board (P) through the rear housing vent opening (164), and heat generated from various circuit components disposed on the front surface of the printed circuit board (P) is reduced. can be effectively cooled.

Meanwhile, as shown in FIGS. 10 and 11 , a front panel coupling opening 122 for coupling the front panel 11 may be formed on the edge of the front housing 12 .

The front panel 11 is formed of a synthetic resin material, and the portion where the display panel 13 is disposed is formed to be transparent, so that numbers and characters displayed on the display panel 13 can be seen.

At the edge of the front panel 11, coupling protrusions 112 are formed, and the coupling protrusions 112 are fitted into the front panel coupling opening 122, so that the front panel 11 is connected to the front housing ( 12) can be disposed in front of.

In addition, a front housing coupling protrusion 124 is formed to protrude from the rear surface of the front panel coupling opening 122 in the front housing 12 .

In addition, as shown in FIG. 11 , an intermediate housing coupling protrusion 1456 is formed at a position corresponding to the front housing coupling protrusion 124 in the intermediate housing 14 .

Thus, the intermediate housing coupling protrusion 1456 is inserted into the coupling protrusion opening 125 formed in the front housing coupling protrusion 124, so that the front housing 12 and the intermediate housing 14 can be coupled.

Meanwhile, as shown in FIG. 13 , a heat dissipation member 15 may be disposed between the front housing 12 and the display panel 13 .

The heat dissipating member 15 is thinly formed of a metal plate such as steel or aluminum alloy, and the edge portion 152 of the heat dissipating member 15 is bent.

As described above, in a state in which the edge portion 152 of the heat dissipation member 15 is bent, the heat dissipation member 15 may be fitted to the front portion of the front housing 12 .

13 and 14 , a front housing ventilation opening 126 is formed at one side of the front housing 12 .

In this state, the side portion S of the heat dissipation member 15 is configured to protrude toward the front housing vent opening 126 .

The front housing ventilation opening 126 is formed to face the rear housing ventilation opening 164 formed in the rear housing 16 .

Thus, the side portion S of the heat dissipation member 15 to which the heat generated from the display panel 13 is transmitted is efficiently cooled by the air flowing through the rear housing vent opening 164 .

In addition, heat dissipation openings 153 may be formed in the edge portion 152 of the heat dissipation member 15 .

Preferably, some of the heat dissipation openings 153 are formed at positions corresponding to the front housing coupling protrusions 124 formed in the front housing 12 .

Thus, the air flowing through the front housing coupling protrusion 124 and the coupling protrusion opening 125 formed therein can flow to the heat dissipation opening 153 .

Thus, it can be configured to increase the cooling effect of the heat dissipation member (15).

In addition, edge concave portions 155 may be formed on the edge of the heat dissipation member 15 .

By the edge recesses 155 , the edge portion 152 of the heat dissipation member 15 is easily bent and configured to be fitted into the front housing 12 .

In another embodiment of the present invention shown in FIG. 15 , front housing heat dissipation recesses 128 may be formed on a surface facing the heat dissipation member 15 in the front housing 12 .

Thus, the air flowing through the front housing vent opening 126 flows into the front housing heat dissipation concave portion 128 , so that the entire heat dissipation member 15 can be more effectively cooled.

And, in another embodiment of the present invention shown in Fig. 16, the surface of the heat dissipation member 15 may be formed with lattice-shaped surface concave portions 156.

The surface concave portion 156 may be formed on the surface of the heat dissipating member 15 in contact with the display panel 13 , or may be formed on both surfaces.

Due to the surface concave portions 156 , the surface area of the heat dissipating member 15 itself is increased to increase heat transfer efficiency.

In addition, as air flows through the surface concave portion 156 , the display panel 13 disposed on the front surface of the heat dissipation member 15 may be more effectively cooled.

As mentioned above, the terms used in the embodiments of the present invention have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention pertains.

Although the present invention has been described with reference to the limited embodiments and drawings, the embodiments are not intended to limit the technical spirit of the present invention, but rather to explain, the technical spirit of the present invention is not limited thereto, and the present invention pertains to By those of ordinary skill in the art, various modifications and variations will be possible within the technical spirit of the present invention and the equivalent scope of the claims to be followed.

Accordingly, the protection scope of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

And, as long as it is within the scope of the object of the present invention, all the components may be configured by selectively combining one or more.

The terms "included" or "consisting of" above mean that the corresponding component may be included, and should be construed as being able to additionally include other components.

10: Air quality measuring device
11: front panel
12: front housing
13: display panel
14: middle housing
15: heat dissipation member
16: rear housing
17: sensor member

Claims (16)

a front housing forming a front exterior of the air quality measuring device;
a display panel disposed on the front housing;
a rear housing forming a rear surface of the air quality measuring device;
It includes an intermediate housing disposed between the front housing and the rear housing,
The front housing and the intermediate housing are fitted and coupled,
The middle housing and the rear housing are fitted,
A printed circuit board is disposed inside the air quality measuring device,
Circuit components for driving the air quality measuring device are disposed on the front surface of the printed circuit board,
A sensor member for measuring air quality is disposed on the rear surface of the printed circuit board,
An air inlet for inflow of air and an air outlet for outflow of air are formed on the side of the intermediate housing,
The sensor member includes a sensor member housing,
The sensor member housing is formed with a sensor member housing inlet for inflow of air and a sensor member housing outlet for outflow of air,
A housing fan for flowing air is installed in the sensor member housing, and is configured to introduce air through the sensor member housing inlet and discharge air through the sensor member housing outlet,
An inlet partition and an outlet partition are formed inside the air inlet and the air outlet at the side of the intermediate housing,
The air introduced into the air inlet is introduced into the sensor member housing inlet through the inlet partition wall,
The air discharged through the sensor member housing outlet is discharged to the air outlet through the outlet partition wall,
An air flow blocking barrier is formed across the inlet and outlet barriers,
The air quality measuring device, characterized in that the edge portion of the printed circuit board is disposed in contact with the air flow blocking barrier rib. The method of claim 1,
Air quality measurement, characterized in that by placing the edge portion of the printed circuit board in contact with the air flow blocking barrier, the space inside the inlet and outlet barriers and the space in the front of the printed circuit board are separated Device. 3. The method of claim 2,
The sensor member housing is formed in a flat hexahedron shape, and the portion other than the sensor member housing inlet and the sensor member housing outlet is configured to be sealed. 4. The method of claim 3,
Air quality measuring device, characterized in that the air flow blocking protrusion is formed on the side of the inlet partition wall and the outlet partition wall in the sensor member housing to face the air flow blocking partition wall. 5. The method of claim 4,
The air quality measuring device, characterized in that the sensor member receiving recess for accommodating the sensor member is formed in a portion of the rear housing where the sensor member is disposed. 6. The method of claim 5,
Air quality measuring device, characterized in that the rear housing ventilation openings are formed on the opposite side of the portion where the sensor member is disposed in the rear housing. 7. The method of claim 6,
The air quality measuring device, characterized in that the intermediate housing is formed with support partition walls and substrate support partition walls across the support partition walls. The method of claim 1,
Air quality measuring device, characterized in that the front panel coupling opening for coupling the front panel is formed in the edge portion of the front housing. 9. The method of claim 8,
A front housing coupling protrusion is formed on the rear surface of the front panel coupling opening,
An intermediate housing coupling protrusion is also formed at a position corresponding to the intermediate housing,
The air quality measuring device, characterized in that the intermediate housing coupling protrusion is inserted and coupled to the coupling protrusion opening formed in the front housing coupling protrusion. 10. The method of claim 9,
Air quality measuring device, characterized in that the heat dissipation member is disposed between the front housing and the display panel. 11. The method of claim 10,
The heat dissipation member is formed of a metal plate, and the edge portion of the edge of the heat dissipation member is bent and fitted to the front housing. 12. The method of claim 11,
A front housing ventilation opening is formed at one side of the front housing,
The air quality measuring device, characterized in that the side portion of the heat dissipation member is configured to be exposed to the printed circuit board side through the front housing ventilation opening. 13. The method of claim 12,
Air quality measuring device, characterized in that the heat dissipation opening is formed in the edge portion of the heat dissipation member. 14. The method of claim 13,
Air quality measuring device, characterized in that the edge portion of the heat dissipation member is formed with a concave edge. 15. The method of claim 14,
Air quality measuring device, characterized in that the front housing heat dissipation recesses are formed on a surface of the front housing facing the heat dissipation member. 14. The method of claim 13,
Air quality measuring device, characterized in that the surface of the heat dissipation member is formed with lattice-shaped surface recesses.

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