JPH0731929B2 - Mounting structure for heat generating equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mounting structure for a heat generating device such as a dimmer switch which is embedded in a construction surface such as a wall and requires heat radiation.

[Prior Art] As a heat generating device, there is a dimmer switch that controls the phase of a commercial power source to control the incandescent lamp by controlling the conduction angle of a semiconductor element. This dimmer switch is embedded in a wall. Then installed. The structure of embedding the light control switch in a wall will be described below with reference to FIGS. 7 and 8.
As shown in FIG. 8, this dimmer switch is designed to be embedded and mounted in an embedding hole 11 formed in a wall 10 by using a mounting plate 2 and the like described later. With this dimmer switch,
Circuit parts constituting a phase control circuit and the like are housed in a box-shaped body 1 having an open upper surface shown in FIG. Here, since the semiconductor element (not shown) for phase control generates heat, a metal heat dissipation plate 6 is attached to this semiconductor element for heat dissipation. The body 1 is attached by screwing to the back side of a plate-shaped metal mounting plate 2. At this time, the opening of the body 1 is closed in a substantially sealed state by the mounting plate 2 so that dust and the like from the outside does not enter. It should be noted that the heat dissipation plate 6 is also screwed to the mounting plate 2 so that the mounting plate 2
It is also designed to radiate heat. Here, the mounting plate 2 may be subjected to a treatment such as black coating in order to enhance the heat radiation effect. Further, a hole (not shown) for introducing a wiring such as a power supply line is bored on the back surface of the body 1, and the wiring is connected to the phase control circuit through the hole. The front cover 3 is screwed to the front side of the mounting plate 2, and the operation piece 7 of the variable resistor for dimming is projected through the slide holes 9 and 12 formed in the mounting plate 2 and the front cover 3. The operation knob 8 is fixed to the portion of the operation piece 7 protruding from the front cover 3. The mounting plate 2 has a rectangular frame-shaped plate frame 4 sandwiched between the wall 10 and the mounting screws 13 on the wall 10 through through holes 2a and 4a formed at both ends of the mounting plate 2 and the plate frame 4. It is attached by screwing. Then, the front surface plate 5 having an opening through which the front cover 3 is inserted is attached to the mounting plate 2 from the front side.
To be attached to. Here, the surface plate 5 is attached to the plate frame 4 by appropriate fitting means. The surface plate 5 does not come into direct contact with the mounting plate 2.

[Problems to be Solved by the Invention] Since the mounting plate 2 used when mounting the above-mentioned dimmer switch on the wall 10 has a function as a heat radiating plate, it has a temporary effect on the heat radiation of the semiconductor element for phase control. Is obtained. However, when the mounting plate 2 is used for heat dissipation in this way, the surface temperature of the front cover 3 and the surface plate 5 rises due to the heat generated by the mounting plate 2. In other words, it was hard to say that sufficient heat dissipation measures were taken when viewed from the part touched by the hand.

The present invention has been made in view of the above points, and an object of the present invention is to provide a heat-generating device that can effectively dissipate heat from a heat-generating component without causing a rise in temperature of a portion touched by a hand. It is to provide a mounting structure.

[Means for Solving the Problems] In order to achieve the above object, the present invention comprises a mounting plate composed of a plurality of metal plates, and a metal plate directly attached to a body and another metal plate. A space is provided between the metal plates, and the metal plates are laminated with the space at the center. Here, if the cover is attached only to the frontmost metal plate and the body and the heat-generating component are attached only to the rearmost metal plate that is directly attached to the body, a better effect can be expected.

[Operation] In the present invention, the mounting plate is composed of a plurality of metal plates as described above, and a gap is provided between the metal plate directly attached to the body and another metal plate, and this gap is formed. By stacking each metal plate in the center, it is possible to radiate the heat from the heat-generating components into the air gap so that the heat from the metal plates directly attached to the body can be radiated. In addition to this, the gap formed between the metal plate on the body side and the other metal plate acts as a heat insulating layer so that heat of the heat generating component is less likely to reach the cover.

If the cover is attached only to the frontmost metal plate, and the body and heat-generating components are attached only to the rearmost metal plate that is directly attached to the body, the heat from the heat-generating components will be removed. It is possible to minimize the conduction to the front cover via the cover and further reduce the temperature rise of the front cover.

Example 1 FIGS. 1 and 2 show an example of the present invention. In this embodiment, the mounting plate 2 has a triple structure, and a frame-shaped mounting plate 2 _{2 is provided} between two mounting plates 2 ₁ and 2 ₃ having the same shape as described in the conventional example.
It has a structure sandwiching. Then, two through holes are provided at both ends of the mounting plates 2 ₁ , 2 ₃ corresponding to the inner surface of the surface plate 5.
2b is perforated. In FIG. 1, only the through hole 2b and the slide hole 9 are shown for easy understanding of the following description, but of course the body 1, the mounting hole for the front cover 3 and the mounting hole for the wall 10 are shown. 2a etc. are also perforated. The mounting plate 2 ₁ to 2 ₃ laminated is is formed to a thickness falling within the faceplate 5.

In this embodiment, the mounting plate 2 ₁ to 2 ₃ is a laminated structure, the mounting is performed similarly to the conventional example. Where body 1
The front cover 3 and the like are basically the mounting frame 2 ₁
It is attached as in the case of the figure. Thus, when stacking the mounting plate 2 ₁ to 2 _3, the mounting plate as shown in Figure 2
2 _1, 2 ₃ void 14 by a mounting plate 2 ₂ between are formed, and since is formed a through hole 2b which communicates with the gap between the surface plate 5 and the mounting plate 2 _3, for example, the second As shown by the arrow in the figure, air flows from the void 14 through the through hole 2b and a small gap between the front cover 3 of the surface plate 5 and the plate frame 4. Also, since the mounting plate 2 ₂ is frame-shaped, the mounting plates 2 ₁ , 2
The opposing surfaces of ₃ are effectively used for heat dissipation, and the heat dissipation area (surface area) can be secured twice as large as that of the conventional mounting plate consisting of only one sheet, and the heat generated by the semiconductor can be efficiently used. Can dissipate heat. Moreover, (acting as i.e. gap 14 thermal insulation layer) directly acts to prevent the heat is applied mounting plate 2 ₃ Table cover 3 and the surface plate 4 in the case of this embodiment, the surface cover 3 Ya The temperature rise of the surface plate 4 can be suppressed as much as possible. Since the mounting plate 2 ₁ is intended to be deposited in a substantially sealed state in the same manner as the opening of the body 1 and the mounting plate 2 of the prior art, good almost the same level as the conventional example with respect to the dust-proof effect of the external The effect is obtained. Furthermore, if to flow air in the embedding hole 11 through the mounting plate 2 ₁ to the formed hole 2b, it can be expected even better heat dissipation effect.

[Embodiment 2] FIGS. 3 to 5 show another embodiment of the present invention. In this embodiment, the same mounting plate 2 ₂ and 2 ₃ as the mounting plate 2 2 is formed integrally.
₄ and is obtained by the double structure of the mounting plate 2 _1. Mounting plate 2 ₄ of the present embodiment becomes the shape shown in FIG. 4 Expand (b), with bending the lugs 2c formed on both sides on the inside 180 °, ear piece both ends underside is bent It is bent downward so as to coincide with the lower surface of 2c, and through holes 2b are formed in the bent portions at both ends. Accordingly, when laminating the mounting plate 2 ₄ to the mounting plate 2 _1, the mounting plate 2 ₂ almost the same void 14 as when interposed in the first embodiment is formed between the mounting plate 2 ₁ become. Therefore, in this embodiment, the same effect as that of the first embodiment can be obtained.

Comparing the heat dissipation effect between this embodiment and the conventional product, the internal temperature of the body 1 was improved by about 5 deg, and the outermost front cover 3 was improved by about 0.5 to 1.5 deg. Incidentally, the surface area as a mounting plate 2 ₁ is tested using a of about 50 cm ^2.

[Embodiment 3] FIG. 6 shows still another embodiment of the present invention. In this embodiment, the screw 15 the front cover 3 with screwing the mounting plate 2 ₃ only to the screw 16, the body 1 and the heat-generating component is only the mounting plate 2 ₁
It is screwed with. This is so that the front cover 3 and the heat-generating component are most indirectly contacted with each other so that the heat from the heat-generating portion does not reach the front cover 3 and the like as much as possible. Therefore, the temperature rise of the front cover 3 can be further reduced. Incidentally, if so only fixed in this way the front cover 3 to the mounting plate 2 _3, can be expected about the same extent be screwed body 1 through the mounting plate 2 _1, 2 ₄ .

[Advantages of the Invention] As described above, the present invention configures a plurality of metal plates as the mounting plate and provides a gap between the metal plate directly attached to the body and another metal plate. Since each metal plate is laminated with the air gap in the center, the heat from the metal plate that directly adheres to the body that radiates the heat from the heat generating component can be radiated to the air gap, and the heat of the heat generating component can be radiated well. In addition, since the gap formed between the metal plate on the body side and the other metal plate acts as a heat insulating layer, heat of the heat generating component is less likely to reach the cover, which is the part touched by the hand.

Also, if the above-mentioned cover is attached only to the frontmost metal plate and the body and heat-generating components are attached only to the rearmost metal plate that is directly adhered to the body, heat from the heat-generating components will be removed. It is possible to minimize the conduction to the front cover via the cover and further reduce the temperature rise of the front cover.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part configuration of an embodiment of the present invention, FIG. 2 is a sectional view of the same when a wall is mounted, and FIG. 3 is an exploded perspective view of a main part configuration of another embodiment. 4 (a) and 4 (b) are a perspective view and a developed view of one mounting plate of the same as above, FIG. 5 is a sectional view of the same as above when the wall is mounted, and FIG. A sectional view, FIG. 7 is an exploded perspective view of a conventional example, and FIG. 8 is a sectional view of the same with a wall mounted. 1 the body, ₂₁ to ₂₄ is mounting plate 3 front cover, 5 the surface plate, 14 is a gap.

Claims (2)

[Claims] 1. A box-shaped body having an open front surface for housing components constituting a heat-generating device, and a metal body which is attached to the opening of the body in a substantially close contact state and radiates heat generated by the heat-generating component. A mounting structure for a heat-generating device, comprising a mounting plate and a cover mounted on the front side of the mounting plate, wherein the body is housed and mounted in an embedded hole formed on the construction surface by the mounting plate. It is composed of a single metal plate, and a gap is provided between the metal plate which is adhered to the opening of the body in a substantially close contact state with another metal plate, and the metal plates are laminated with the gap as the center. Mounting structure for heat generating equipment. 2. The heat generating device according to claim 1, wherein the cover is attached only to the frontmost metal plate, and the body and the heat generating component are attached only to the rearmost metal plate directly attached to the body. Mounting structure.