JP4735389B2 - Separate air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of a separation type air conditioner for easily realizing temperature detection by flowing room air without coating application for preventing condensation in a case where a room temperature sensor is mounted on a printed circuit board.

  Conventionally, an indoor unit of this type of separation type air conditioner has been provided with a room temperature sensor mounted on the same printed circuit board together with a light emitting element for display and a receiving IC, and on an electrical box that houses the printed circuit board. It has a structure in which an opening is provided together with a printed circuit board for the purpose of configuring a wind circuit for detecting a room temperature with a room temperature sensor. In another embodiment, a display light emitting element and a receiving IC mounted on the same printed circuit board are housed in an electrical box (see, for example, Patent Document 1).

5, 6, and 7 illustrate an electrical box attached to an indoor unit of a conventional separation-type air conditioner described in Patent Document 1. FIG. As shown in FIG. 5 and FIG. 6, the one in which the room temperature sensor 400, the receiving IC 500, the light emitting element 600, and the connector 800 are mounted on the printed board 300 is housed on the electrical box a100 and covered by the electrical box b200. It has a broken structure. In addition, an opening 700 is provided in the printed circuit board 300 and the electrical box a100 at a position facing the room temperature sensor, and the wind ensures a flow to detect the room temperature from the opening 700. Yes. At this time, before the moist air passes through the opening 700 and passes through the room temperature sensor 400, the moist air flows to the solder surface side and the component surface side of the printed circuit board 300. As shown in FIGS. 5 and 7, it is necessary to apply the solder surface side lead portion to the connector 800 of the component surface side component.
JP 2002-98352 A

  However, in the conventional configuration, it is necessary to apply a coating material in the lead part of the component surface such as the connector mounted on the printed circuit board and the connection part on the solder surface side, which increases the cost and takes time to complete the electronic control device. It had the problem of requiring.

  The present invention solves the above-described conventional problems, and insulates indoors by damp air without applying a coating material on a component surface lead portion and a solder surface side connection portion such as a connector mounted on a printed circuit board. The purpose is to prevent the decrease and easily realize the soldering of the room temperature sensor to reduce the cost and the working time.

In order to solve the above conventional problems, the indoor unit of the separation-type air conditioner of the present invention is a indoor unit which includes a electric box divided for accommodating a printed circuit board mounted with room temperature Sensor, The printed circuit board is provided with an opening at a place where the room temperature sensor is mounted, and a convex shape is formed upward from the bottom surface of the electrical box, and the convex shape is further divided into upper and lower parts, Arrange the printed circuit board from the upper part of the convex shape so that the lower convex shape penetrates the opening, arrange the divided upper convex shape from the upper part of the printed circuit board, and further The room temperature sensor is arranged on a convex shape so that air passes through the convex shape from the bottom surface of the electrical box .

  As a result, in the component surface lead part such as the connector mounted on the printed circuit board and the solder surface side connection part, it is possible to prevent insulation deterioration due to humid air in the room without applying a coating material, and at room temperature. The sensor can be easily soldered, and the cost and working time can be reduced.

  The indoor unit of the separation type air conditioner of the present invention has a reduced insulation due to damp air in the room without applying a coating material on the lead part of the component surface such as the connector mounted on the printed circuit board and the solder surface side connection part. In addition, it is possible to easily realize the soldering of the room temperature sensor and reduce the cost and the working time.

Indoor unit of the separation-type air conditioner of the present invention is a indoor unit which includes a electric box divided for accommodating a printed circuit board mounted with room temperature Sensor, mounting the room temperature sensor in the printed circuit board An opening is provided at the location, a convex shape is formed upward from the bottom surface of the electrical box, the convex shape is further divided into upper and lower portions, and the upper side of the divided lower convex shape is
The printed circuit board is arranged so that the lower convex shape penetrates the opening from the portion, and the upper convex shape divided from the upper part of the printed circuit board is arranged, and further the upper convex shape By arranging the room temperature sensor on the top and allowing air to pass through the convex shape from the bottom surface of the electrical box, it is possible to easily realize soldering of the room temperature sensor and to reduce costs and working time.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view showing a convex shape of an electrical box of an indoor unit of a separation type air conditioner according to Embodiment 1 of the present invention.

In FIG. 1, 1 is an electrical box a (lower part), and 2 is an electrical box b (upper part) to be fitted with the electrical box a. Reference numeral 3 denotes a printed board mounted on the electrical box a, and a room temperature sensor 4, a receiving IC 5, and a light emitting element 6 are mounted on the printed board 3. The printed circuit board 3 is provided with an opening 7 at a position facing the vicinity of the room temperature sensor 4. One of the convex parts of the electrical box a1 that is divided into the upper and lower parts is a convex part a (lower part) 8, which is inserted into the opening 7 from the lower surface side of the printed circuit board 3, and the electrical box The other part obtained by dividing the convex part of a1 into the upper and lower parts is a convex part b (upper part) 9, which is inserted into the opening part 7 from the upper surface side of the printed circuit board 3. By placing the room temperature sensor 4 on the convex portion b9, a distance from the opening 7 can be secured. A connector 10 for electrical connection to the printed circuit board 3 is provided.

  FIG. 2 is a side view showing the convex shape of the electrical box of the indoor unit of the separation type air conditioner according to Embodiment 1 of the present invention. The room temperature sensor 4 mounted on the printed circuit board 3 is the same as that of the electrical box a1. It is fixed at a predetermined height by placing it on the divided convex part b9. Moreover, the convex part a8 and the convex part b9 are combined to show a state of penetrating through the opening 7 of the printed circuit board 3.

  FIG. 3 is a side view showing a two-divided state of the convex of the electrical equipment box a (lower part) of the indoor unit of the separation type air conditioner according to Embodiment 1 of the present invention, where the convex part a8 and the convex part b9 are opposed to each other. And has a shape penetrating the opening 7.

FIG. 4 is a side view of the convex part of the lower part of the electrical box of the indoor unit of the separation type air conditioner according to Embodiment 1 of the present invention, where the impedance is high in the solder side lead terminals of the printed circuit board 3. The coating material 11 is applied to the surface. Also, the connector 10 is not coated with the coating material 11 on the component surface side, and only a part on the solder surface side is coated.

  The operation and action of the insulation lowering prevention by moist air due to the projecting shape divided into two parts at the lower part of the electrical box constructed as described above will be described below.

  In FIG. 1, first, the convex portion a8 of the electrical box a1 is inserted into the opening 7 provided in the printed circuit board 3 from the lower surface side, and the convex portion b9 is inserted from the upper surface side so as to be penetrated. The box b2 is attached and fixed from above. When the convex part b9 is inserted into the printed circuit board 3, the room temperature sensor 4 is placed on the convex part b9 so that it also serves as a spacer function of the room temperature sensor 4 and is mounted on the printed circuit board 3. The shape is extended to a higher position than the electronic parts.

Next, the flow of moist air in the room will be described. Air flows from the bottom surface of the electrical box a toward the top surface, passes through the projections a8 and b9, passes through the room temperature sensor 4 and exits to the front surface. To go. At this time, air does not flow to the solder surface side of the printed circuit board 3 in order to pass through the convex portions a8 and b9, and the moist air does not flow directly to the electronic component side on the component surface side. The structure is separated from the printed board 3 by a distance protruding upward.

  Next, soldering of the room temperature sensor will be described. The receiving IC 5, the light emitting element 6, and the connector 10 are directly and stably mounted on the printed board 3, and the room temperature sensor 4 is mounted on the convex portion b9. It is mounted in a stable shape with the shape placed on the. For this reason, the lower surface side of the printed circuit board 3 can be realized by one-time flow soldering.

  As described above, in the present embodiment, the printed circuit board on which the room temperature sensor, the receiving IC, the light emitting element, and the connector are mounted includes a divided electrical box for storing the printed circuit board, and the room temperature is controlled by the room temperature sensor. Components such as connectors mounted on the printed circuit board by providing an opening for allowing the inside air to flow in the vicinity of the room temperature sensor of the electrical equipment box and the printed circuit board for measurement and forming the lower part of the electrical equipment box into two convex shapes In the surface lead part and the solder side connection part, it is possible to prevent insulation deterioration due to moist air in the room without applying a coating material and to easily realize soldering of the room temperature sensor, thereby reducing cost and working time. Can be realized.

  As described above, the indoor unit of the separation-type air conditioner of the present invention is a printed circuit board on which electronic components such as a room temperature sensor are mounted, and includes an electric box that is divided to store the printed circuit board. The coating material is applied to the component surface lead portion and the solder surface side connection portion of the connector and the like mounted on the printed circuit board by forming the lower portion of the electrical box into a convex shape divided into two parts. Therefore, it is possible to easily prevent room temperature sensor insulation from being lowered and to easily solder the room temperature sensor. It can also be used for prevention purposes.

The perspective view which shows the electrical equipment box convex shape of the indoor unit of the separation-type air conditioner in Embodiment 1 of this invention The side view which shows the electrical equipment box convex shape of the indoor unit of the separation-type air conditioner in Embodiment 1 of this invention The side view which shows the electrical equipment box a (lower part) convex shape of the indoor unit of the separation type air conditioner in Embodiment 1 of this invention The bottom view of the printed circuit board mounted in the electrical equipment box of the indoor unit of the separation type air conditioner in Embodiment 1 of the present invention The perspective view which shows the electrical equipment box shape of the indoor unit of the conventional separation-type air conditioner Side view showing shape of electrical box of indoor unit of conventional separation type air conditioner Bottom view of the printed circuit board mounted on the electrical box of the indoor unit of a conventional separation type air conditioner

1 Electrical box a (lower part)
2 Electrical box b (top)
3 Printed circuit board 4 Room temperature sensor 5 Receiver IC
6 Light emitting element (LED)
7 Opening 8 Protruding part a (lower part)
9 convex part b (upper part)
10 Connector 11 Coating material

Claims (1)

A room unit comprising a segmented electric box for accommodating a printed circuit board mounted with room temperature sensor, the position of mounting the room temperature sensor in the printed circuit board is provided with an opening, a bottom surface of the electrical component box A convex shape is formed upward from the top, and the convex shape is further divided into upper and lower parts, and the lower convex shape penetrates the opening from the upper part of the divided lower convex shape. Arrange the substrate, arrange the upper convex shape divided from the upper part of the printed circuit board, further arrange the room temperature sensor on the upper convex shape, and inside the convex shape from the bottom of the electrical box. An indoor unit of a separation type air conditioner characterized by allowing air to pass through .

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