JP3067339U - Heat dissipation structure of heating element housing - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To maintain the temperature of a heating element and the like housed therein at a predetermined value without installing a special cooling means, to be able to carry out with a simple structure at a low cost, and to be maintenance-free. Provided is a function of a heat-generating element to be housed and a heat-dissipating structure of a heat-generating-element housing without a decrease in life. SOLUTION: Hot air from a heating element 17 housed in an inner box 2 is formed on the inner box 2 and has an inner surface-side projecting piece 11 having a large surface area.
The heat is effectively absorbed by the black body surface 19, is transferred to the large-area outer-side projecting piece 12 exposed in the duct 13, rises in the duct 13, and is radiated from the exhaust port 24 of the canopy 4.
Thus, the heating element 17 is maintained at the predetermined temperature.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat radiating structure of a heat generating element housing that can maintain a temperature of a heat generating element housed therein at a predetermined value without using a special cooling means.

[0002]

[Prior art]

 2. Description of the Related Art A housing for housing a heating element inside or outside is widely used. In addition to the heat generated by the heating element itself, the temperature of the heating element rises over time due to the influence of the outside air temperature, and the temperature of the heating element becomes high, causing a problem that the function of the heating element and its life are reduced. Therefore, it is necessary to cool the inside of the housing containing the heating element by some cooling means and keep the temperature of the heating element at a predetermined value.

FIG. 11 shows an example of a conventional heat dissipation structure of a housing. A discharge port 34 is provided on the upper side of the casing 33, and the heat in the casing 33 is radiated by fans 35 and 36, a heat pipe, a heat exchanger 37, and the like engaged with the discharge port 34, and the inside of the casing 33 is radiated. Temperature rise is prevented. Further, a circulation fan 31 for maintaining uniformity of the internal temperature is arranged in the housing 33.

[0004]

[Problems to be solved by the invention]

 As described above, the fans 35 and 36, the heat pipe, the heat exchanger 37, and the like are required as described above to maintain the internal temperature in the housing 33 at a predetermined value, and the equipment cost is increased. There is a problem. In addition, each of the above cooling means requires maintenance and maintenance costs are incurred. In each case, the inside of the casing 33 comes into contact with the outside air side, and the casing 33 is provided with the intake port 39 and the exhaust port 38 so that the inside is not provided. There is a problem that dust etc. enter and accumulate in the sea. In addition, as shown in FIG. 11, the exhaust port 38 and the intake port 39 are of a loose type, and this type protrudes from the surface, thereby deteriorating the cleanability and appearance. In addition, these have a problem that the exhaust area is small and the heat radiation is inadequate.

The present invention has been devised in view of the above circumstances, and provides a heat-dissipating structure for a heat-generating body housing that is simple in structure, can be implemented at low cost, is maintenance-free, and does not require maintenance costs. The purpose is to do.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an inner box for storing a heating element therein, and a duct penetrating up and down between the inner box and the inner box. A housing having an outer box having a door through which the inner box can enter and exit, and a canopy forming an exhaust port communicating with the duct while enclosing the upper part of the outer box. A portion of the surface that engages with the duct constitutes a heat dissipation structure of the heating element housing case provided with a surface area increasing portion that increases the surface area of the outer wall.

Further, the present invention is characterized in that the inner surfaces of the inner box and the outer box are processed to be black, and the surface area increasing portion projects from the outer surface of the inner box toward the inside and outside of the inner box. A plurality of projecting pieces or projecting portions are formed, and the projecting pieces or projecting portions projecting outward are disposed so as to be exposed in the duct.

[0008] Further, according to the present invention, the exhaust port comprises a concave groove formed in substantially the entire surface of the canopy, and the concave groove forms a side window communicating with the inside of the canopy. It is characterized by becoming. Further, a circulation fan for circulating the air in the inner box is provided inside the inner box.

Further, the present invention is characterized in that a shielding plate is disposed on an outer surface side of the outer box with an appropriate gap therebetween. Further, the door provided on the outer box is mounted on the main body side of the outer box via a sealing member. Further, a vent is formed on the side of the base supporting the inner box and the outer box.

[0010] The temperature of the air in the inner box containing the heating element rises with time, and the hot air is radiated to the duct side through the surface area increasing portion formed in the inner box. The hot air in the duct rises due to the chimney effect and is introduced into the canopy. The canopy has a number of exhaust ports, and hot air is radiated outward from the exhaust ports. In addition, the hot air inside the barrel, which is blackened on the inner surface of the inner box, etc., is absorbed by the inner surface side, and is efficiently and greatly radiated to the duct side by the increased surface area of the inner box. You. Note that the exhaust port formed in the canopy does not protrude from the surface, unlike the looper type exhaust port in the prior art, and has a large exhaust area and high heat radiation efficiency. Further, by arranging the circulation fan and the shielding plate, the heat radiation efficiency can be further improved.

[0011]

[Embodiment of the invention]

 Hereinafter, an embodiment of a heat dissipation structure of a heating element housing of the present invention will be described in detail with reference to the drawings. 1 to 3 show the appearance of a heat-generating body housing 1 having a heat dissipation structure according to the present invention. The heating element housing 1 has an inner box 2 having a cross-sectional shape shown in FIG. 4, an outer box 3 surrounding the outer surface, a canopy 4 disposed over the upper part of the outer box 3, an inner box 2 and an outer box. It comprises a base table 5 for supporting the box 3 and a shielding plate 6 disposed on the outer surface of the outer box 3 so as to cover it. Note that the inner box 2 and the outer box 3 are each formed of a cylinder having an appropriate overall height in the vertical direction.

First, a detailed structure of the inner box 2 and the outer box 3 will be described with reference to FIG. FIG. 4 shows the cross-sectional shape of the inner box 2 and the outer box 3 and the shielding plate 6. The inner box 2 is composed of a substantially U-shaped frame surrounded by side plates 7, 7 and a vertical plate 8 provided therebetween, and is fixed to the outer box 3 by a supporting plate 9 fixed in the outer box 3. . A surface area increasing portion 10 is formed on the side plates 7 and 7 and the vertical plate 8. In the present embodiment, the surface area increasing portion 10 is formed separately from the side plate 7 and the vertical plate 8, but may be formed integrally.

The surface area increasing portion 10 is formed so as to protrude from the inner surface of the side plate 7 or the vertical plate 8 and protrudes inward, and the outer surface of the side plate 7 or the vertical plate 8 at a position facing the inner side protruding piece 11. And an outer projecting piece 12 formed to project outward. The inner and outer protruding pieces 11 and 12 are formed to extend in a direction perpendicular to the plane of FIG. 4 and have a length substantially equal to the length of the inner box 2 or the outer box. Consists of Each of the inner projecting piece 11 and the outer projecting piece 12 has a U-shaped cross section, and the bottom side thereof is fixed to the side plate 7 or the vertical plate 8. Due to the inner-side projecting piece 11 and the outer-side projecting piece 12 having the U-shaped cross section, the surface area of the side plate 7 or the vertical plate 8 becomes extremely large.

The outer box 3 has a cylindrical shape surrounding the inner box 2, and a duct 13 is formed between the outer surface of the inner box 2 and the inner surface of the outer box 3. This duct 13 is formed to penetrate vertically. The main body side 3a of the outer case 3 is made of a U-shaped cross section, and a door 14 is attached to the opening of the main body side 3a so as to be openable and closable. For example, a conductive seal member 15 is interposed between them. FIG. 6 shows the upper surface of the outer box 3 with the canopy 5 covering the upper part of the outer box 3 and the like removed, and the upper surface of the inner box 2 is covered with the upper plate 3b. A duct portion 13a communicating with the duct 13 is formed in the upper surface plate 3b. As shown in FIG. 10, the inner box 2 and the lower surface are closed by a lower plate 32. The lower plate 32 has holes (not shown) through which various wires and cables (not shown) connected to the heating element 17 pass. Abbreviation) is formed. Further, a vent hole 18 is formed in the base table 5 which supports the inner box 2 and the outer box 3, so that air can be ventilated below the lower plate 32.

As shown in FIG. 4, the inner surface of the side plate 7 and the vertical plate 8 of the inner box 2, the inner surface side projecting piece 11 fixed to the inner plate 2, the support plate 9 of the outer box 3, and the inner surface of the door 14 are black. Is formed. The black body surface 19 is, for example, one to which a black paint is stuck, but is not limited to this. The black body surface 19 is for improving heat absorption of internal heat in the inner box 2.

As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 5, etc., the canopy 4 has a roof shape that covers the upper surface of the outer box 3, and has side plates 20, 20, a ceiling plate 21, and an inclined plate 22. , A hollow lid inside surrounded by a flat plate 23 and the like. A plurality of exhaust ports 24 are formed in each of the plates 20, 21, 22, 23 of the canopy 4. The cavity 25 (FIG. 10) inside the canopy 4 communicates with the duct port 13a.

Next, the structure of the exhaust port 24 will be described with reference to FIGS. The exhaust port 24 includes a number of concave grooves 26 arranged adjacent to each other and does not project from the surface of the canopy 4 unlike the conventional louver type exhaust port 38. The concave groove body 26 is composed of a dish 26 a fixed to the back surface of the canopy 4, and the dish 26 a is arranged to face the opening 27 formed on the canopy 4 side. Side windows 28 are formed on both side surfaces of the dish 26a, and communicate with the opening 27. As described above, the air (hot air) can freely enter and exit as indicated by the arrows, and the open port 27 and the side window 28 have a larger area than the louver type exhaust port 38, so that the radiation efficiency can be improved. The bottom plate 29 of the plate 26a functions to prevent dust from entering the canopy 4.

As shown in FIGS. 1 to 6, a shielding plate 6 is provided around the outer box 3 with an appropriate gap therebetween. The shielding plate 6 is formed of a plate-like member having substantially the same area as the outer box 3 and is supported by the outer box 3 by the stay 30. The shape of the material is not specified, but any material may be used as long as it has a good reflectance to the outside air and has appropriate strength.

Next, the operation of the heating element housing 1 of the present invention will be described mainly with reference to FIG. In the present embodiment, a case where the circulation fan 31 is provided on the upper surface side of the inner box 2 will be described. The circulation fan 31 prevents the hot air from being concentrated on the upper side of the inner box 2, and by this operation, forms a circulating flow 16 in the inner box 2. Is maintained at a uniform temperature.

When the heating element 17 is stored and stored in the inner box 2, the air in the inner box 2 becomes hotter than the outside air due to the heat generated by the operation of the heating element 17 itself and the action of the outside air. If there is no heat dissipation structure such as the heat generator housing 1 of the present invention, the air temperature in the inner box 2 rises steadily, causing a decrease in the function of the heat generator 17 and a shorter life. However, according to the heat radiation structure of the present invention, first, the hot air in the inner box 2 is absorbed by the side plates 7, the vertical plate 8 and the inner side projecting piece 11 while being circulated and agitated by the circulation fan 31. The black body surface 19 functions to further promote the heat absorption. Further, since the inner protruding piece 11 is connected to the outer protruding piece 12, the heat absorbed by the inner protruding piece 11 is transferred to the outer protruding piece 12 side. On the other hand, since the outer protruding piece 12 is exposed in the duct 13 as described above, the hot air is guided upward along the duct 13. That is, the hot air is effectively transferred upward by the chimney effect of the duct 13 and is introduced into the hollow portion 25 of the canopy 4. The introduced hot air is radiated to the outside air from the side window 28 and the opening 27 of the concave groove 26 communicating with the cavity 25. In addition, heat is also radiated from the exhaust port 16 of the lower plate 32 and the exhaust port 18 of the base 5 communicating with the inner box 2. As described above, the temperature rise of the heating element 17 is suppressed, and the heating element 17 is kept in a predetermined heated state.

Except for the circulation fan 31, the heating element housing 1 of the present invention comprises the inner box 2, the outer box 3, the canopy 4, the surface area increasing portion 10 provided in the inner box 2, the duct 13, and the like. It consists of a structure that does not use any special cooling means. Therefore, it is formed at low cost. In addition, once the heating element 17 is stored, maintenance is basically unnecessary, and maintenance is free and maintenance cost is unnecessary. When it is desired to further reduce the temperature of the heating element 17 or when it is necessary to store a low-temperature element in place of the heating element 17, it is easy to provide a cooling means such as a Peltier module on the canopy 4 side. it can. Of course, a cooling means conventionally used can be provided. In addition, the heat dissipation structure of the heat generating element housing of the present invention forms a multiple heat dissipation part, so that the heat dissipation efficiency can be greatly improved as compared with the conventional one.

[0022]

[Effect of the invention]

 According to the heat radiating structure of the heat generating element housing of the present invention, the temperature of the heat generating element and the like can be maintained at a predetermined value without using a special cooling means, and can be implemented at low cost. In addition, maintenance is free, and the function and life of the heat generating element housed therein are not reduced without intrusion of dust or the like.

[Brief description of the drawings]

FIG. 1 is an external view of a heating element housing having a heat dissipation structure according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is an enlarged cross-sectional view showing a detailed structure of an inner box, an outer box, and the like of the heating element housing.

FIG. 5 is a top view of FIG. 1;

FIG. 6 is a top view showing the top structure of the heating element housing with the canopy of FIG. 1 removed;

FIG. 7 is a partial plan view of an exhaust port provided in a canopy.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

FIG. 10 is a schematic view for explaining the operation of the heat radiation structure of the heat generating element housing of the present invention.

FIG. 11 is a schematic view showing an example of a conventional heat dissipation structure of a housing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating element storage housing 2 Inner box 3 Outer box 3a Main body side 4 Canopy 5 Base stand 6 Shielding plate 7 Side plate 8 Vertical plate 9 Support plate 10 Surface area increasing part 11 Inner side projecting piece 12 Outer side projecting piece 13 Duct 13a Duct part 14 Door 15 Sealing member 16 Circulating flow 17 Heating element 18 Vent 19 Black body surface 20 Side plate 21 Ceiling plate 22 Inclined plate 23 Flat plate 24 Exhaust port 25 Cavity 26 Groove 26a Plate 27 Opening 28 Side window 29 Bottom plate 30 Stay 31 Circulation fan 32 Lower plate

Claims (8)

[Utility model registration claims] 1. An outer box having an inner box accommodating a heating element therein, a duct surrounding the inner box and vertically extending between the inner box and having a door through which the heating element can enter and exit. A box and a heat dissipation structure of a housing having a canopy that covers an upper part of the outer box and forms an exhaust port that communicates with the duct,
A heat dissipation structure for a heating element housing, wherein a surface area increasing portion for increasing a surface area of the outer wall is provided at a portion of the outer surface of the inner box that engages with the duct. 2. The heat radiating structure for a heat generating element housing according to claim 1, wherein the inner surfaces of the inner box and the outer box are treated in black. 3. The projecting piece, wherein the surface area increasing portion comprises a plurality of projecting pieces or projecting portions projecting from the outer surface of the inner box toward the inside and the outside of the inner box, and projecting outward. The heat radiating structure according to claim 1, wherein the protruding portion is disposed so as to be exposed in the duct. 4. The air outlet according to claim 1, wherein the exhaust port comprises a concave groove formed on substantially the entire surface of the canopy, and the concave groove forms a side window communicating with the inside of the canopy. The heat radiation structure of the heating element housing described in the above. 5. The heat radiating structure of a heating element housing according to claim 1, wherein a circulation fan for circulating the air in the inner box is provided inside the inner box. 6. The heat radiating structure for a housing for a heating element according to claim 1, wherein a shielding plate is disposed on an outer surface side of the outer box with an appropriate gap therebetween. 7. The heat radiating structure for a housing for a heating element according to claim 1, wherein a door provided on the outer box is attached to a main body side of the outer box via a sealing member. 8. The heat-dissipating structure for a housing for a heat-generating body according to claim 1, wherein a vent is formed on the side of the base supporting the inner box and the outer box.