JP5633385B2 - Recessed ceiling ventilation fan - Google Patents

Description

  The present invention relates to a ventilation fan that is attached to a ceiling and directly connects a power supply wire to a main body.

  Conventionally, this type of ceiling-mounted type ventilation fan has many connection terminals covered with walls to protect the connection terminals against dripping water from the attic, and the connection terminal insertion port is provided in the recessed part. Are known. (For example, refer to Patent Document 1).

  Hereinafter, the ceiling-embedded ventilation fan will be described with reference to FIGS.

  As shown in FIG. 7, a frame 103 having a suction port 101 corresponding to the opening of the ceiling plate on the lower surface and a discharge port 102 on the side surface, provided inside the frame 103, and fixed to the top surface of the frame 103. The motor 105 driven by the motor 104, the casing 106 surrounding the fan 105, the decorative panel 107 that covers the lower surface opening of the frame 103 from the room side and is detachably mounted, and the top surface of the frame 103 A circuit case 109 that houses a control circuit 108 for controlling the drive of the motor 104, a connection terminal 110 for connecting the control circuit 108 and the power supply wire is provided on the side surface of the circuit case 109, and the upper portion of the connection terminal 110 is covered with the eaves 111. Then, the insertion port 112 of the connection terminal 110 is disposed at a place covered and covered.

JP 2010-164202 A

  In such a conventional ceiling-embedded ventilation fan, as shown in FIG. 9, the condensed water 115 transmitted from the power supply wire 113 remains attached to the bottom 114 of the eaves and water may enter the connection terminal 110. Had the problem of being.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a ceiling-embedded ventilation fan that can prevent condensed water transmitted from a power supply wire from entering a connection terminal.

  In order to achieve this object, the present invention includes a frame that is embedded in a ceiling of a room and has a suction port corresponding to the opening of the ceiling plate on the lower surface, a discharge port on a side surface, A motor that is fixed to the top surface of the frame and a fan that is driven, a casing that surrounds the fan, and a decorative panel that covers the lower surface opening of the frame from the room side and is detachably mounted; A circuit case mounted on the top surface of the frame and containing a control circuit for driving and controlling the motor, and provided on the side surface of the circuit case with a connection opening of a connection terminal for connecting the control circuit and a power supply wire, Cover the upper side and both side surfaces of the connection opening with eaves, and arrange the bottom of the eaves at a position sufficiently lower than the insertion hole of the connection terminal, from the end surface of the eaves to the frame. When the insertion hole of the connection terminal is viewed from the front in the same direction as the eaves in parallel with the top surface, a draining plate is provided at a position close to the lower side of the insertion hole, and the draining plate is opposed to the connection terminal from the connection terminal side. It is arranged with a downward slope toward the side, thereby achieving the intended purpose.

  According to the present invention, a frame that is embedded and attached to the back of the ceiling of a room, has a suction port corresponding to the opening of the ceiling plate on the lower surface, has a discharge port on a side surface, and is provided inside the frame, the frame A motor that is fixed to the top surface of the fan, a fan that is driven, a casing that surrounds the fan, a decorative panel that covers the lower surface opening of the frame from the room side and is detachably mounted, and a top surface of the frame And a circuit case containing a control circuit for driving and controlling the motor, and provided with connection openings for connecting terminals for connecting the control circuit and power supply wires on the side of the circuit case, and above and on both sides of the connection opening. Cover the surface with eaves, and arrange the bottom of the eaves at a sufficiently low position with respect to the insertion hole of the connection opening, and parallel to the top surface of the frame from the end surface of the eaves. In the same direction, when the insertion hole of the connection terminal is viewed from the front, a draining plate is provided at a position close to the lower side of the insertion hole, and the draining plate is inclined downward from the connection terminal side toward the opposite side. Since the water droplets transmitted through the power supply wires come into contact with the draining plate, the water droplets become larger and flow down the gradient of the draining plate and flow down to the top of the frame. An effect that water can be prevented from entering the power supply terminal can be obtained.

The disassembled perspective view which shows the structure of the ceiling embedded type ventilation fan of Embodiment 1 of this invention. Front view of the insertion hole of the connection terminal of the ceiling-mounted ventilation fan Figure showing a cross section of the ceiling-mounted ventilation fan A diagram showing the flow of water transmitted through the power cable of the ceiling-mounted ventilation fan The bottom view of the circuit case of the ceiling-mounted ventilation fan Figure showing the water drain hole in the circuit case of the ceiling-mounted ventilation fan An exploded perspective view showing the configuration of a conventional ceiling-mounted ventilation fan Perspective view of the ceiling-mounted ventilation fan Sectional drawing showing the circuit case part of A cross section of FIG. 8 of the ceiling embedded type ventilation fan

  The ceiling-embedded ventilation fan according to claim 1 of the present invention is embedded and attached to the back of the ceiling of the room, has a suction port corresponding to the opening of the ceiling plate on the lower surface, and a frame having a discharge port on the side surface; A makeup provided inside the frame and detachably mounted by covering a motor and a fan driven by a motor fixed to the top surface of the frame, a casing surrounding the fan, and a lower surface opening of the frame from the room side. A panel and a circuit case that is mounted on the top surface of the frame and houses a control circuit for driving and controlling the motor, and a connection opening of a connection terminal that connects the control circuit and a power supply wire to a side surface of the circuit case. And covering the upper side and both side surfaces of the connection opening with eaves, the bottom of the eaves being disposed at a sufficiently low position with respect to the insertion hole of the connection terminal, from the end surface of the eaves When the insertion hole of the connection terminal is viewed from the front in the same direction as the eaves in parallel to the top surface of the frame, a draining plate is provided at a position close to the lower side of the insertion hole, and the draining plate is disposed from the connection terminal side. It has a configuration in which a downward gradient is provided toward the opposite side. As a result, the water droplets transmitted through the power supply wires come into contact with the draining plate, and the water droplets become large and flow down the gradient of the draining plate and flow down to the top of the frame, so that the condensed water enters the power terminal. There is an effect that it can be prevented.

  Further, in the space covered with the eaves on the upper and both side surfaces, a wall is disposed from the height of the draining plate toward the upper eaves, and the wall is located between the insertion hole of the connection terminal and the insertion hole side. It is also possible to adopt a configuration in which they are arranged so as to be inclined so that the opposite side becomes wider. As a result, the power supply wire is inserted while hitting the wall, so that the power supply wire is guided in the insertion hole, so that it is possible to easily connect the power supply.

  Alternatively, a drain hole may be formed in the circuit case below the power terminal, and a rib may be formed so as to have an upward slope from the drain hole outlet toward the inside of the circuit case. As a result, the dew condensation water generated inside the circuit case goes down the ribs and drains to the outside of the circuit case when the amount of water reaches a certain level, and the water dripped from the draining plate becomes difficult to enter the circuit case. There is an effect that water can be prevented from adhering to the substrate in the circuit case.

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

(Embodiment 1)
As shown in FIG. 1, a frame 3 that is embedded in a ceiling of a room (not shown) and has a suction port 1 corresponding to an opening of the ceiling plate on a lower surface and a discharge port 2 on a side surface, and a frame 3. A sirocco-type fan 6 driven by a motor 5 that is provided inside and fixed to the top surface 4 of the frame 3 by two screws and that is driven, a casing 7 that surrounds the fan 6, and a suction port of the frame 3 1 that covers 1 from the room side and is detachably mounted by a mounting spring 21 and a control that is mounted on the top surface 4 and adjusts the voltage applied to the motor 5 to drive and control the rotational speed of the motor 5. In a ceiling-embedded ventilation fan provided with a circuit case 10 containing a circuit 9, a connection terminal 12 for connecting a control circuit 9 and a power supply wire 11 is connected to the side surface of the circuit case 10 as shown in FIGS. An opening 13 is provided, and the upper side and both side surfaces of the U-shaped connection opening 13 are covered with eaves 14, and the top surface 4 also serves as the bottom of the eaves 14, and is disposed at a position lower than the insertion hole 15 of the connection terminal 12. In this configuration, a space exists below the eaves 14. Four insertion holes 15 of the connection terminal 12 are provided so that the speed can be changed. Further, a draining plate 17 is provided at a position close to the lower side of the insertion hole 15 when the insertion hole 15 is viewed in front from the end surface 16 of the eaves 14 in the same direction as the eaves 14 in parallel with the top surface 4. The gradient is provided by making the thickness of the 12 side thicker than the opposite side.

  As shown in FIG. 4, when the condensed water 22 generated in the back of the ceiling is transmitted through the power supply wire 11, the condensed water 22 comes into contact with the draining plate 17, so that water droplets increase and the gradient of the draining plate 17 is transmitted to the top surface. 4 or dropped on the space below the eaves 14, that is, on the top surface 4. Since the top surface 4 is positioned below the insertion hole 15 and has a distance, water does not reach the height of the insertion hole 15 and water can be prevented from entering the connection terminal 12.

  Further, as shown in FIGS. 2 and 5, a wall 18 is disposed inside the eaves 14 so as to partition the insertion holes 15 from the height of the draining plate toward the upper eaves 14. The gradient is provided by making the connecting terminal 12 side thicker than the opposite side. With this structure, when the power supply cable 11 is connected, the tip of the power supply cable 11 is guided so as to be easily inserted into the insertion hole 15 by contacting the wall 18, and the insertion hole 15 is formed by providing the eaves 14. It is possible to solve the problem that it is difficult to see and the power supply wire 11 is difficult to connect.

  As shown in FIG. 6, the circuit case 10 is provided with a drain hole 19 at a position below the connection terminal 12 so that the circuit case 10 has an upward slope from the outlet of the drain hole 19 toward the inside of the circuit case 10. Ribs 20 are formed. With this configuration, the dew condensation water generated inside the circuit case 10 goes down the rib 20 and drains to the outside of the circuit case 10 when the amount of water reaches a certain amount. Moreover, since the water dripped from the draining plate is difficult to enter the circuit case, it is possible to prevent water from adhering to the control circuit 9 in the circuit case 10.

  INDUSTRIAL APPLICABILITY The ceiling-embedded ventilation fan according to the present invention is widely useful for air conditioners that are embedded and used in a ceiling to which a power supply wire is directly connected.

DESCRIPTION OF SYMBOLS 1 Suction port 2 Discharge port 3 Frame 4 Top surface 5 Motor 6 Fan 7 Casing 8 Cosmetic panel 9 Control circuit 10 Circuit case 11 Power supply wire 12 Connection terminal 13 Connection opening 14 Eaves 15 Insertion hole 16 End surface 17 Drain plate 18 Wall 19 Drain Hole 20 rib

Claims (3)

A frame that is embedded in the ceiling of the room and has a suction port corresponding to the opening of the ceiling plate on the lower surface and a discharge port on the side surface, and is provided inside the frame and fixed to the top surface of the frame. A motor that is driven by the motor, a casing that surrounds the fan, a decorative panel that is detachably mounted covering the lower surface opening of the frame from the room side, and a motor that is mounted on the top surface of the frame, A circuit case housing a control circuit for driving control, provided on the side of the circuit case with a connection opening for connecting the control circuit and a power supply wire, and covering the upper side and both side surfaces of the connection opening with eaves The bottom of the eaves is disposed at a position sufficiently lower than the insertion hole of the connection opening, and is parallel to the top surface of the frame in the same direction as the eaves from the end surface of the eaves, When the insertion hole of the connection terminal is viewed from the front, a draining plate is provided at a position close to the lower side of the insertion hole, and the draining plate is provided with a downward slope from the connection terminal side toward the opposite side. Embedded ceiling ventilation fan characterized by that. In the space covered by the eaves on the upper and both side surfaces, a wall is disposed from the height of the draining plate toward the upper eaves, and the wall is positioned between the insertion hole of the connection terminal and the insertion hole. 2. The ceiling-embedded ventilation fan according to claim 1, wherein the fan is arranged so as to be narrow so that the opposite side becomes wider. 3. A drain hole is formed in a circuit case below a power terminal, and a rib is formed so as to have an upward slope from the drain hole outlet toward the inside of the circuit case. Recessed ceiling fan.

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