JP2011247527A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilator capable of preventing the intrusion of a water droplet and dust by using a compact electric component box, and preventing the intrusion of water droplet and dust to a motor.SOLUTION: A flange 7a projecting roughly into a square shape in a direction orthogonal to a rotating shaft of a fan 3 is formed at an outer periphery of an indoor-side opening 6 of a cylindrical section 5, a raising section 7b is formed at a back side of a peripheral section of the flange 7a, and a frame 9 receiving the electric component box 8 is constituted of the flange 7a and the raising section 7b. The electric component box 8 is constituted of an electric component box case 8a having a power source connection terminal 12 and a power source cord fixing section 13, and an electric component box cover 8b as a cover, and its outer wall is overlapped and fitted in a stepwise manner. Furthermore, as an end of the electric component box cover 8b is disposed to a bottom face of the electric component box case 8a, the ventilator capable of preventing the intrusion of water by the compact electric box can be provided.

Description

  The present invention relates to a ventilator provided with a power supply connection terminal electrically connected to a motor.

  In a ventilator provided with a power supply connection terminal electrically connected to a motor, the power supply line can be connected to the power supply connection terminal by removing the coating. Conventionally, an example of this type of ventilator is known in which a power connector is installed in a main body frame (see, for example, Patent Document 1).

JP 2008-232488 A

  The problem with the conventional example is that the electrical component is composed of at least two power connection terminals with different polarities, each formed as a separate part, and the power connection terminals are shifted from each other with respect to the insertion direction of the power wires. There is a problem that it is difficult to reduce the size of the electrical component. In addition, there is a problem that measures for preventing water droplets and dust from entering the motor are not taken.

  Therefore, the present invention solves such a conventional problem, and provides a ventilator that can prevent water droplets and dust from entering with a small electrical box, and can also prevent water droplets and dust from entering the motor. The purpose is to do.

  And in order to achieve this object, the ventilator of the present invention has a cylindrical part in which a fan and a motor are provided inside in a shape to be attached to a wind tunnel pipe provided in the wall so as to communicate between the room and the outside, A flange portion formed in a substantially square shape projecting radially in the outer periphery of the indoor side opening of the tubular portion, a frame for forming a rising portion on the back side of the periphery of the flange portion and housing the electrical equipment box, and the tube In the ventilation device configured with a motor cover that fits in a motor case provided in the shape part, the electrical box is composed of an electrical box case having a power connection terminal and a power cord fixing part and an electrical box cover, and both parts are fitted. The outer wall portion to be joined has a stepped shape, and the end of the electrical box cover is provided up to the bottom surface of the electrical box case. In the outer wall portion of the box to prevent the ingress of water, it is to achieve the intended purpose.

  As described above, the ventilator according to the present invention has a cylindrical portion in which a fan and a motor are provided in a shape to be attached to a wind tunnel pipe provided in a wall so as to communicate between the room and the outdoor, and the cylindrical portion. A flange portion formed in a substantially square shape projecting radially on the outer periphery of the indoor side opening, a frame that forms a rising portion on the back side of the periphery of the flange portion, and stores the electrical box and the cylindrical portion In the ventilator configured with a motor cover that fits in the motor case, the electrical box is composed of an electrical box case and an electrical box cover having a power connection terminal and a power cord fixing part, and an outer wall part that fits both parts is provided. It has a shape that overlaps in a staircase shape, and the end of the electrical box cover is provided up to the bottom of the electrical box case. It is possible to prevent the entry, the power connecting portion and each separate part, it is not necessary to configure offset from one another, and can be realized ventilator excellent insulating performance with a small electrical box.

Sectional drawing which shows the attachment state of the ventilation apparatus of Embodiment 1 of this invention Exploded perspective view showing the electrical box configuration of the ventilation device Sectional drawing which shows the electrical equipment box part of the ventilation apparatus Sectional drawing which shows the electrical equipment box part of the ventilation apparatus Sectional drawing which shows the electrical equipment box part of the ventilation apparatus Rear view of the ventilator Rear view showing the drain hole of the ventilator A perspective view showing a drain hole of the ventilator Sectional drawing which shows the electrical equipment box of the ventilator of Embodiment 2 of this invention Exploded perspective view showing the electrical box of the ventilation device Sectional view showing the electrical box of the ventilation device Perspective view showing the electrical box of the ventilation device Partial sectional view of a ventilator according to Embodiment 3 of the present invention. Sectional drawing which shows the attachment state to the ceiling of the conventional ventilator Rear view of the ventilator

  According to a first aspect of the present invention, there is provided a ventilator comprising: a cylindrical part in which a fan and a motor are provided in a shape to be attached to a wind tunnel pipe provided in a wall so as to communicate between the room and the outside; and the cylindrical part A flange portion formed in a substantially square shape projecting radially in the outer periphery of the indoor opening of the interior, a frame that forms a rising portion on the back side of the periphery of the flange portion, and stores the electrical box and provided in the tubular portion In the ventilation device configured with a motor cover that fits into the motor case, the electrical box is composed of an electrical box case having a power connection terminal and a power cord fixing portion, and an electrical box cover that is a lid of the electrical box case And the outer wall part where both parts are fitted has a shape that overlaps in a stepped manner, and the end of the electrical box cover is provided up to the bottom of the electrical box case And, the water attached to the electrical component box, flows down along the electrical component box surface from the outer wall of the electrical box cover. Even if it adheres to the fitting part of the electrical box case and the electrical box cover, it does not enter by overlapping the fitting part in a staircase shape, so water does not adhere to the charging part inside the electrical box and the insulation performance is improved The effect of doing. Therefore, it is not necessary to ensure insulation performance at the power connection terminal portion, and the electrical box can be downsized.

  Moreover, it is good also as a structure which extended the flange part of the electrical equipment box cover rather than the electrical equipment box case bottom face. As a result, the water adhering to the electrical box drops without contacting the fitting part of the electrical box case and the electrical box cover, so that the water does not adhere to the charging part inside the electrical box and the insulation performance is further improved. There is an effect.

  Moreover, it is good also as a structure bent inside so that the flange part of an electrical equipment box cover may be extended to the electrical equipment box case bottom face, and an electrical equipment box case may be covered. As a result, the electrical box cover is fitted in a shape that covers the electrical box case, and the electrical box fitting portion is in the vertical direction, so that water does not enter more. In addition, even when a gap occurs in the fitting part due to deformation during molding, water does not enter, so even if deformation occurs in the electrical box case and electrical box cover during the part processing process, It has a structure in which water does not adhere and the insulating performance is further improved.

  The frame is provided with guide ribs formed below the power cord outlet near the power cord outlet of the electrical box. As a result, the power cord is routed obliquely downward from the outlet, and after passing through the guide rib, is pulled out from the power cord outlet at the top of the frame. Since it drops at the portion of the power cord that is convexly curved, there is an effect that it does not enter the electrical box.

  Further, the guide rib is provided up to the same height as the frame rising portion. As a result, if the power cord is installed on the wall with the power cord riding on the guide rib, a gap is created between the frame and the wall, so that the installer can easily notice if the power cord is not correctly wired. There is an effect that can be.

  Moreover, it is set as the structure which provided the power cord exit of the electrical equipment box diagonally downward. As a result, water droplets adhering to the vicinity of the power cord outlet in the electrical box flow down to the outside of the electrical box, so even if high-humidity air adheres to the power cord outlet of the electrical box and becomes water droplets, the charging part inside the electrical box There is an effect that it can be discharged out of the electrical box without adhering to.

  In addition, a drainage hole is provided in the lower rising portion of the frame, in the vicinity of the power cord outlet, and in the vicinity of the motor lead wire inlet. Thereby, the water that has entered from between the wall portion and the frame flows out of the frame from the drain hole provided in the rising portion on the lower side of the frame. Even if it is installed incorrectly on the ceiling, water will flow down from the drain hole provided near the power cord outlet and near the motor lead wire inlet, so that even if water enters the frame, water will not enter the electrical box. Play.

  Further, a rib a is provided on the bottom surface of the electrical box case, a power connection terminal is installed on the rib a, and a rib b for partitioning between the different polarity terminals of the power connection terminal is provided. Thereby, the water adhering to the bottom surface of the electrical box case flows down without contacting the power connection terminal. Further, since water does not adhere so as to conduct between the different polarity terminals, water does not adhere to the power connection terminal which is the charging unit even when water enters the electrical box. Further, there is an effect that the different polarity terminals are not short-circuited by water.

  Further, the power supply connection terminal is fixed, and a terminal installation base that can be tilted upward with the power supply cable connection side of the power supply connection terminal is provided in the electrical box case. As a result, the power cord connection terminal of the power connection terminal can be confirmed by lifting the terminal installation base upward, so that the power construction worker can insert and connect the power cord to the power connection terminal while checking the power cord connection terminal. This has the effect of improving workability.

  Moreover, it is set as the structure which provided the rib c which partitions off between the different polarity terminals of a power connection terminal in a terminal installation base. Thereby, since water does not adhere so that it may conduct | electrically_connect between different pole terminals, there exists an effect that the construction property of a power cord connection is good and safety | security becomes high.

  Further, a thin portion is provided in a portion covering the power connection terminal of the electrical box cover, and the electrical box cover is configured to be openable and closable so that the power cord connection part of the power connection terminal is exposed. As a result, when connecting the power cord, only the power cord connecting part side of the electrical box cover is opened and connected, so only the part necessary for the power connection is touched. Do not damage other electrical components. Since the front of the electrical box cover is connected in a hinge shape, water does not enter. Moreover, since it is an integral part, there is an effect that parts are not lost.

  Further, the connection diagram is formed on the front or back surface of the open / close portion of the electrical box cover by marking and displaying. As a result, a connection diagram is displayed in the vicinity of the power cord connection portion, so that the connection can be confirmed while performing the power cord connection work. Since it is not a seal, it is stamped, so the display will not peel off or disappear even when used in a high humidity space in the bathroom. Since it is engraved, there is an effect that it can be displayed at low cost.

  Moreover, the resin material of an electrical equipment box and a terminal installation base is comprised with a flame-retardant material. Thereby, since the component which hold | maintains or covers a charging part is comprised with a flame-retardant material, even if smoke and a fire generate | occur | produce in a charging part, there exists an effect that it does not spread out of an electrical equipment box.

  Moreover, the fitting part of a motor cover and a flame | frame is comprised in step shape. As a result, the fitting part between the motor cover and the frame is stepped, making it difficult for water and dust to enter. Therefore, water does not adhere to the motor charging part, and dust contained in the exhaust is also difficult to enter. There is an effect.

  Also, a cylindrical protective flange is provided at the motor shaft outlet of the frame, and the boss portion of the fan is inserted so as to overlap the protective flange. Thereby, when exhausting the air containing moisture, the air is less likely to contact the motor shaft, so that the motor shaft is less likely to rust. In addition, there is an effect that dust and the like are hardly attached.

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

(Embodiment 1)
As shown in FIG. 1, a ventilation device 50 according to the present embodiment covers a wind tunnel pipe 2 that penetrates a wall portion 1, a cylindrical portion 5 in which a fan 3 and a motor 4 are provided, and a fan 3. And a louver 51 provided at the top. Usually, such a ventilator 50 is provided so as to provide a louver 51 on the indoor side and exhaust indoor air to the outside.

  As shown in FIGS. 1 to 3, the wind tunnel pipe 2 is provided on the wall portion 1 so as to communicate between the room and the outdoors. The wind tunnel pipe 2 is fitted with a cylindrical portion 5 in which a fan 3 and a motor 4 are provided. A flange portion 7 a is formed on the outer periphery of the indoor opening 6 of the cylindrical portion 5 so as to project in a substantially rectangular shape in a direction orthogonal to the rotation axis of the fan 3. On the back side of the peripheral portion of the flange portion 7a, a rising portion 7b is formed. The flange portion 7a and the rising portion 7b constitute a frame 9 that houses the electrical box 8. A motor cover 11 is fitted into the motor case 10 provided in the cylindrical portion 5. In such a ventilator 50, the electrical box 8 includes an electrical box case 8a having a power connection terminal 12 and a power cord fixing portion 13, and an electrical box cover 8b serving as a lid. The electrical box case 8a and the electrical box cover 8b are fitted so that the outer wall portions overlap in a stepped manner. Furthermore, the end of the electrical box cover 8b is provided up to the bottom surface (surface on the louver 51 side) of the electrical box case 8a.

  With the above configuration, the water attached to the electrical box 8 flows down from the outer wall of the electrical box cover 8b along the bottom surface of the electrical box case 8a. Among them, a small amount of water adheres to the fitting portion of the bottom portion of the electrical box case 8a with the electrical box cover 8b. However, since the overlapping portion of the electrical box case 8a and the electrical box cover 8b is secured about 20 mm and the fitting portions are overlapped in a staircase shape, it is difficult to enter water. Therefore, water does not adhere to the charging part in the electrical box 8 and the insulation performance can be improved. In this way, the ingress of water can be blocked by the outer portion of the electrical box 8, so that the power connection terminals 12 are not required to be separated from each other and are not shifted from each other. The ventilator 50 with excellent performance can be realized.

  Moreover, as shown in FIG. 4, it is good also as a structure which extended the flange part of the electrical equipment box cover 8b rather than the bottom face of the electrical equipment box case 8a. According to such a configuration, the water adhering to the electrical box 8 drops without contacting the fitting portion between the electrical box case 8a and the electrical box cover 8b, so that the water does not adhere to the charging unit inside the electrical box 8. Can be structured.

  Moreover, as shown in FIG. 5, it is good also as a structure which extended the flange part of the electrical equipment box cover 8b to the bottom face of the electrical equipment box case 8a, and was bent inside so that the said electrical equipment box case 8a might be covered. According to such a structure, since the distance of an overlapping part becomes long and the fitting part of the electrical equipment box 8 becomes a perpendicular direction, it becomes a structure where water does not permeate more. Further, even when a gap is generated in the fitting portion due to deformation at the time of molding of the parts, the electrical box cover 8b covers the electrical box case 8a, so that the influence is reduced and the water intrusion prevention structure is not affected by the manufacturing conditions.

  Further, as shown in FIG. 6, a guide rib 14 formed below the power cord outlet 15 is provided on the frame 9 in the vicinity of the power cord outlet 15 of the electrical box 8. The guide rib 14 has a structure provided up to the same height as the rising portion 7b of the frame 9, and the power cord outlet 15 has a structure provided obliquely downward. It is conceivable that water adheres to the power cord 17 and enters the electrical box 8 through the power cord 17. However, according to such a configuration, the power cord 17 is drawn obliquely downward from the power cord outlet 15, passes through the lower end of the guide rib 14, and is drawn out from the power cord outlet 16 above the frame 9. Therefore, the water that has entered the frame 9 through the power cord 17 drops at the portion of the power cord 17 that is curved downward and convex at the lower portion of the guide rib 14, and therefore does not enter the electrical box 8.

  In addition, since the guide rib 14 is provided to the same height as the rising portion of the frame 9, when the power cord 17 is installed on the wall 1 in a state of riding on the guide rib 14, there is a gap between the frame 9 and the wall 1. Occurs. That is, when the power cord 17 is not correctly wired, the installer can easily notice it, so that the power cord 17 can be drained reliably.

  In addition, since water droplets adhering to the vicinity of the power cord outlet 15 flow down to the outside of the power cord outlet 15 provided obliquely downward, even when high-humidity air adheres to the vicinity of the power cord outlet 15 and becomes water droplets, the electrical box 8 It can be discharged outside without adhering to the internal charging part.

  As shown in FIGS. 7 and 8, a drain hole 18 is provided in the lower rising portion 7 b of the frame 9, in the vicinity of the power cord outlet 15, and in the vicinity of the motor lead wire inlet 19. According to such a configuration, the water that has entered from between the wall portion 1 and the frame 9 flows out of the frame 9 through the drain hole 18 provided in the lower rising portion of the frame 9.

  In addition, as shown in FIG. 7, even if it is mistakenly installed on the ceiling, water flows into the frame 9 because the water flows down from the drain hole 18 provided in the vicinity of the power cord outlet 15 and the motor lead wire inlet 19. Even in this case, it is possible to prevent water from collecting in the frame 9 and intruding into the electrical box 8.

  Moreover, the drain hole 18 is comprised by the square hole of 4 mm or more, or the round hole of diameter 4 mm or more. According to such a configuration, water is discharged without being affected by the surface tension of water, so that water can be reliably discharged from the frame 9. Even if the R or C surface is cut at the edge of the drain hole 18, water can be discharged more effectively.

  Thus, according to the ventilator of Embodiment 1 of the present invention, the small electrical box 8 can prevent water from entering and ensure insulation performance. Further, even if a manufacturing problem such as deformation occurs during the molding of the part, it is possible to reliably prevent water from entering. Further, water can be prevented from entering through the power cord 17. When the installer makes a mistake in the wiring of the power cord 17, the construction is easily noticed so that there is no risk of water entering due to a construction error. Further, even when high-humidity air adheres to the vicinity of the power cord outlet 15, it can be discharged outside without adhering to the charging part inside the electrical box 8. Further, the water that has entered from between the wall 1 and the frame 9 flows out of the frame 9 through the drain hole 18. Even if it is mistakenly installed on the ceiling, it is possible to prevent water from flowing down from the drain hole 18 provided in the vicinity of the power cord outlet 15 and in the vicinity of the motor lead wire inlet 19 and entering the electrical box 8. Further, if the drainage hole 18 is constituted by a square hole having a diameter of 4 mm or more or a round hole having a diameter of 4 mm or more, water can be drained without being affected by the surface tension of the water, so that the water can be reliably discharged from the frame 9 It becomes.

(Embodiment 2)
FIG. 9 is a cross-sectional view of a portion of the power connection terminal 12 of the electrical box 8. As shown in FIG. 9, a rib a20 is provided on the bottom surface of the electrical box case 8a, and the power connection terminal 12 is installed on the rib a20. Furthermore, it has a structure in which ribs b <b> 21 for partitioning between the different polarity terminals of the power connection terminal 12 are provided.

  Further, as shown in FIG. 10, the power connection terminal 12 is connected to a terminal installation base 22 whose power cord connection side is inclined upward, that is, the power cord connection side is close to the electrical box cover 8b side. Yes. The terminal installation base 22 is provided with a rib c23 that partitions different polarity terminals of the power connection terminal 12.

  As shown in FIGS. 11 and 12, a thin portion 24 is provided in a portion of the electrical box cover 8 b that covers the power connection terminal 12. The thin portion 24 is provided so that the electrical box cover 8b can be opened and closed so that the power cord connecting portion 25 of the power connecting terminal 12 is exposed.

  In addition, a connection diagram is stamped and displayed on the front or back of the open / close portion of the electrical box cover 8b.

  Moreover, the resin material of the electrical equipment box 8 and the terminal installation base 22 is comprised with the flame retardant material.

  With the above configuration, the water adhering to the bottom surface of the electrical box case 8 a flows down without contacting the power connection terminal 12. Further, since water does not adhere so as to conduct between the different polarity terminals, water does not adhere to the power connection terminal 12 that is the charging unit even when water enters the electrical box 8. Therefore, the different polarity terminals are not short-circuited by water. Further, by lifting the terminal installation base 22 upward, the power supply worker can insert and connect the power cord 17 to the power connection terminal 12 while confirming the power cord connecting portion 25, and the workability is improved. Moreover, since water does not adhere so that it may conduct | electrically_connect between different pole terminals, safety | security becomes high. In addition, when the power cord is connected, only the power cord connecting portion 25 of the electrical box cover 8b is opened and connected. Therefore, it has a structure in which only the part necessary for power connection is touched, and other electrical components are not accidentally damaged during power construction. Since the front surface of the electrical box cover 8b is connected by the thin portion 24, water does not enter. Moreover, since it is an integral part, parts are not lost. Further, since a connection diagram is displayed in the vicinity of the power cord connecting portion 25, the connection can be confirmed while performing the power cord connecting work. Since it is not a seal, it is stamped, so the display will not peel off or disappear even when used in a high humidity space in the bathroom. Since it is engraved, it can be displayed inexpensively. Moreover, since the component which hold | maintains or covers a charging part is comprised with a flame-retardant material, even if smoke and a fire generate | occur | produce in a charging part, it does not spread out of the electrical equipment box 8. FIG.

  As described above, according to the ventilator of the second embodiment of the present invention, safety can be ensured even when water enters the electrical box 8, and the electrical cord connection portion 25 can be checked while electrical work is performed in the vicinity. Since it can be done while confirming the connection diagram displayed on the screen, the workability is good, and other electrical parts are not accidentally damaged, and even if smoke or ignition occurs in the charging part, it will not spread.

(Embodiment 3)
As shown in FIG. 13, the fitting portion between the motor cover 11 and the frame 9 is formed in a step shape.

  Further, a cylindrical protective flange 26 is provided at the outlet of the motor shaft 28 of the frame 9, and the fan boss portion 27 is inserted so as to overlap the protective flange 26.

  With the above configuration, since the fitting portion between the motor cover 11 and the frame 9 is stepped, it is difficult for water to enter and dust to enter, so water does not adhere to the motor charging portion and is included in the exhaust. Dust and the like are less likely to enter. Further, when the air containing moisture is exhausted, the air is less likely to contact the motor shaft 28, so that the motor shaft 28 is less likely to rust. Also, dust and the like are difficult to adhere.

  As described above, according to the ventilator of the third embodiment of the present invention, it is possible to prevent water, dust, and the like from entering the motor charging unit and improve safety. In addition, the motor shaft 28 is also less likely to rust.

  As described above, the ventilator according to the present invention has a cylindrical portion in which a fan and a motor are provided in a shape to be attached to a wind tunnel pipe provided in a wall so as to communicate between the room and the outdoor, and the cylindrical portion. A flange portion formed in a substantially square shape projecting radially on the outer periphery of the indoor side opening, a frame that forms a rising portion on the back side of the periphery of the flange portion, and stores the electrical box and the cylindrical portion In the ventilator configured with a motor cover that fits in the motor case, the electrical box is composed of an electrical box case and an electrical box cover having a power connection terminal and a power cord fixing part, and an outer wall part that fits both parts is provided. It has a shape that overlaps in a staircase shape, and the end of the electrical box cover is provided up to the bottom of the electrical box case. It is possible to prevent the entry, can be used in electrical equipment to be attached to the inner wall surface facing the ambient air.

DESCRIPTION OF SYMBOLS 1 Wall part 2 Wind tunnel pipe 3 Fan 4 Motor 5 Cylindrical part 6 Indoor side opening 7a Flange part 7b Standing part 8 Electrical box 8a Electrical box case 8b Electrical box cover 9 Frame 10 Motor case 11 Motor cover 12 Power supply connection terminal 13 Power cord Fixed portion 14 Guide rib 15 Power cord outlet 16 Power cord outlet 17 Power cord 18 Drain hole 19 Motor lead wire inlet 20 Rib a
21 Rib b
22 Terminal installation base 23 Rib c
24 Thin portion 25 Power cord connection portion 26 Protective flange 27 Boss portion 28 Motor shaft

Claims (16)

A cylindrical part in which a fan and a motor are provided inside in a shape to be attached to a wind tunnel pipe provided in the wall so as to communicate between the room and the outside,
A flange portion formed in a substantially square shape projecting radially in the outer periphery of the indoor side opening of the cylindrical portion;
In the ventilator comprising a frame that forms a rising part on the back side of the periphery of the flange part and houses an electrical box and a motor cover that fits into a motor case provided in the cylindrical part,
The electrical box is composed of an electrical box case having a power connection terminal and a power cord fixing part and an electrical box cover, and the outer wall part into which both parts are fitted has a stepped shape, and the end of the electrical box cover A ventilator characterized in that a portion is provided up to the bottom surface of the electrical box case. The ventilator according to claim 1, wherein the flange portion of the electrical box cover has a structure extending from the bottom surface of the electrical box case. The ventilator according to claim 1, wherein a flange portion of the electrical box cover is extended to the bottom of the electrical box case and bent inward so as to cover the electrical box case. The ventilator according to any one of claims 1 to 3, wherein the frame is provided with guide ribs formed below the power cord outlet near the power cord outlet of the electrical box. The ventilator according to claim 4, wherein the guide rib is structured to have the same height as the frame rising portion. The ventilation device according to claim 4 or 5, wherein the power cord outlet of the electrical box is provided obliquely downward. The ventilator according to any one of claims 1 to 5, wherein a drain hole is provided in a lower rising portion of the frame, in the vicinity of the power cord outlet, and in the vicinity of the motor lead wire inlet. 8. The rib according to claim 1, wherein a rib a is provided on a bottom surface of the electrical box case, a power connection terminal is installed on the rib a, and a rib b is provided for partitioning between different polarity terminals of the power connection terminal. Ventilation device. The ventilator according to any one of claims 1 to 8, wherein a terminal installation base that fixes the power connection terminal and is tilted upward on a power cord connection side of the power connection terminal is provided in the electrical box case. The ventilator according to claim 9, wherein a rib c for partitioning between the different polarity terminals of the power connection terminal is provided on the terminal installation base. The ventilator according to claim 1, wherein a thin portion is provided in a portion covering the power connection terminal of the electrical box cover, and the electrical box cover is configured to be openable and closable so that a power cord connection portion of the power connection terminal is exposed. The ventilator according to claim 11, wherein a wiring diagram is engraved and displayed on the front or back of the open / close portion of the electrical box cover. The ventilator according to any one of claims 1 to 12, wherein the electrical box is made of a flame-retardant resin material. The ventilation device according to claim 10 or 11, wherein the terminal installation base is formed of a flame-retardant resin material. The ventilation device according to any one of claims 1 to 14, wherein a fitting portion between the motor cover and the frame is configured in a stepped shape. The ventilation device according to any one of claims 1 to 15, wherein a cylindrical protective flange is provided at a motor shaft outlet of the frame, and a boss portion of the fan is inserted so as to overlap the protective flange.

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