JP2005076590A - Air current guide structure for air discharge port in heat radiation fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air current guide structure for an air discharge port in a heat radiation fan, capable of enhancing the degree of design freedom in heat radiation range, air current concentration, noise of air, total heat radiation efficiency and in assemblage. <P>SOLUTION: At the air discharge port of a case, a base seat, a plurality of ribs, and at least one air current guide ring are provided. The base seat is used for a fan wheel to be placed thereon, and a plurality of blades are formed on the fan wheel. The ribs are radially connected between the case and the base seat. The air current guide ring is fixed to the rib, and the air current guide ring is formed in such a way that its axial length on the air discharge port side is larger than its radial width. When the fan wheel is rotated, therefore, the air currents can be parted, or concentrated, or the flow direction of the air currents can be guided by the air current guide ring. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an airflow guiding structure of a wind exhaust port of a heat radiating fan, and in particular, at least one air flow guiding ring is formed at the wind exhaust port of the heat radiating fan, and the air flow direction and wind pressure are formed by the air flow guiding ring. This relates to the airflow guiding structure of the wind discharge port of the heat dissipating fan.

  As shown in FIG. 14, the conventional heat dissipating fan housing structure includes a housing 10, a wind inlet 11, a wind outlet 12, a base 13, and a plurality of ribs 14. A wind inlet 11 and a wind outlet 12 are formed on both sides of the housing 10. The base 13 is firmly formed by the rib 14 at the wind outlet 12 of the housing 10, and a stator (not shown) can be fixed to the base 13 to connect a fan wheel (not shown). As a result, when the fan wheel rotates, the heat radiating fan sucks the airflow from the wind inlet 11 and discharges it from the wind outlet 12 to the property to be radiated (for example, the heat radiating fin or the central processing unit). On the other hand, there is one that can radiate heat.

Further, the conventional heat dissipation fan housing structure includes a housing, a plurality of axial fins, and a plurality of axial openings. The housing is provided with a wind inlet and a wind outlet, and the housing can accommodate a stator and a rotor, and a plurality of axial fins extend vertically from the wind inlet side of the housing. Thus, a plurality of axial openings are formed between the axial fins. When the rotor rotates, the plurality of blades of the rotor simultaneously suck in the airflow in the flow direction from the wind inlet and the axial opening, thereby increasing the wind entry amount and suppressing the noise volume. (For example, refer to Patent Document 1).
Republic of China Notification No. 545874

  Although the conventional heat dissipation fan housing structure as described above has the ability to dissipate heat, the airflow of the heat dissipating fan is normally just through the wind exhaust port 12 along the axial direction of the housing 10. By exhausting well, heat is only radiated to a position directly below the wind outlet 12. However, if the property to be radiated cannot be located at a position directly below the wind outlet 12, the property to be radiated cannot receive a large number of radiating air currents, resulting in uneven heat dissipation. In other words, there is a problem that the actual heat radiation efficiency is affected. In addition, if the property to be radiated is limited and cannot be coupled to the space just below the base 13 or the outer diameter range of the wind outlet 12 by an assembly space (for example, a notebook computer), Since it has a relatively large size, there is a problem in that if it cannot be positioned completely directly under the heat radiating fan, the actual heat radiation efficiency is greatly affected. Further, when the airflow passes through the ribs 14, there is a problem that turbulence tends to occur and noise is generated to reduce the efficiency of heat dissipation.

  In addition, the conventional heat dissipation fan housing structure as described above has a heat dissipation function in the same manner as described above, but the property to be dissipated cannot be positioned directly below the wind outlet. In this case, since the property to be radiated cannot receive a large number of radiated air currents, the radiated heat becomes non-uniform and affects the actual heat radiating efficiency. Thus, the conventional golf club head and weight coupling structure as described above must be further improved.

  The present invention has been invented in view of such problems, and an object of the present invention is to form at least one airflow guide ring at the wind outlet of the heat radiating fan. The airflow guide ring is formed on a plurality of ribs of the wind discharge port, and the airflow guide ring is formed so as to be inclined in the outer diameter direction or the inner diameter direction relative to the axial direction of the wind discharge port of the heat radiating fan. As a result, the airflow can be divided, the airflow can be concentrated, or the airflow can be guided to any position to radiate heat, and the wind pressure can be relatively increased. An object of the present invention is to provide an airflow guiding structure for a wind discharge port of a heat dissipating fan capable of increasing the range of heat dissipation, airflow concentration, noise due to air, overall heat dissipation efficiency, and design freedom in assembly.

  The first object of the present invention is to form at least one airflow guide ring at the wind exhaust port of the heat radiating fan, and the air flow at the wind exhaust port can be divided by the air flow guide ring. Providing an airflow guiding structure for the air discharge port of a heat dissipation fan that can increase air pressure, reduce noise caused by air, and improve overall heat dissipation efficiency. It is what.

  The second object of the present invention is to form at least one airflow guide ring at the wind outlet of the heat radiating fan, and the air current guide ring is inclined relative to the axial direction of the wind outlet of the heat radiating fan. Therefore, we will provide an airflow guiding structure for the air discharge port of the heat dissipation fan that can guide the airflow, increase the wind pressure, reduce noise caused by air, and further improve the overall heat dissipation efficiency It is what.

  The third object of the present invention is to form at least one airflow guide ring at the wind outlet of the heat radiating fan. By changing the inclination direction of the airflow guide ring, the airflow can be radiated to any position. Since it can be guided to concentrate heat dissipation and expand the range of heat dissipation, it can increase overall heat dissipation efficiency and design freedom in assembly. Is to provide.

In order to achieve the above object, the airflow guiding structure of the air discharge port of the heat dissipating fan according to the present invention is as follows. That is,
A base, a plurality of ribs, and at least one airflow guide ring are provided at the wind outlet of the housing of the heat dissipation fan. The base is used to mount a fan wheel, and the fan wheel is formed with a plurality of blades. The plurality of ribs are connected between the housing and the base in the radial direction. At least one airflow guide ring is fixed to the rib, and the airflow guide ring is formed so that the axial length on the wind outlet side is larger than the radial width, thereby rotating the fan wheel. Sometimes, it can be used to classify an air stream by an air stream guide ring, concentrate an air stream, or guide the flow direction of the air stream.

  The airflow guiding structure of the wind discharge port of the heat dissipation fan according to the present invention may be formed such that the airflow guide ring is parallel to the axial direction of the wind discharge port of the heat dissipation fan. The airflow guide ring may be formed so as to be inclined in the outer diameter direction relative to the axial direction of the air discharge port of the heat radiating fan. The airflow guiding ring may be formed so as to be inclined in the inner diameter direction relative to the axial direction of the air discharge port of the heat radiating fan. Further, the airflow guide ring is formed so as to be inclined in the outer diameter direction and the inner diameter direction simultaneously with respect to the axial direction of the air discharge port of the heat radiating fan, that is, the cross section of the airflow guide ring is formed to be a triangle. You can also. The rib may be formed so as to be inclined along the blowing direction of the fan wheel blades. Further, the ribs can be formed to have different inclination angles on the inner side and the outer side of the airflow guide ring. In addition, an arcuate airflow guiding portion can be formed at the upper end of the airflow guiding ring near the wind inlet.

  According to the airflow guiding structure of the heat discharge fan of the present invention, at least one airflow guide ring is formed at the wind discharge port of the heat dissipation fan, and the airflow of the wind discharge port is divided by the airflow guide ring. Therefore, there is an advantage that the airflow can be concentrated or guided, and the wind pressure can be increased, noise caused by air can be reduced, and the overall heat radiation efficiency can be increased.

  According to the airflow guiding structure of the air discharge port of the heat dissipation fan of the present invention, at least one airflow guide ring is formed at the air discharge port of the heat dissipation fan, and the airflow guide ring is a Since it is formed so as to be inclined relative to the axial direction, there are advantages that airflow can be guided, wind pressure can be increased, noise caused by air can be reduced, and overall heat dissipation efficiency can be increased.

  According to the airflow guiding structure of the wind discharge port of the heat dissipation fan of the present invention, at least one airflow guide ring is formed at the wind discharge port of the heat dissipation fan, and by changing the inclination direction of the airflow guide ring, Since the airflow can be guided to any position where heat dissipation is desired to concentrate the heat dissipation or expand the range of heat dissipation, the overall heat dissipation efficiency and the freedom of design in assembly can be increased. There is.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view of the air discharge structure of the air discharge port of the heat dissipation fan according to the first embodiment of the present invention, and FIG. 2 is a plan view of the air discharge structure of the air discharge port of the heat dissipation fan according to the first embodiment of the present invention. 3A is a cross-sectional view taken along line AA in FIG. 2, FIG. 3B is a local enlarged view of FIG. 3A, and FIG. 4 is an air flow guide of the air discharge port of the heat radiating fan according to the second embodiment of the present invention. 5 is a perspective view of the structure, FIG. 5 is a plan view of the air discharge structure of the heat discharge fan of the second embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line BB in FIG. 7 is a cross-sectional view of the air discharge structure of the air discharge port of the heat dissipating fan according to the third embodiment of the present invention, and FIG. FIG. 9 is a perspective view of the air discharge port of the heat dissipating fan according to the fifth embodiment of the present invention by the airflow guiding structure, and FIG. FIG. 11 is a cross-sectional view taken along the line CC of FIG. 10, and FIG. 12 is a plan view of the air discharge port of the heat radiating fan according to the sixth embodiment of the present invention. FIG. 13 is a cross-sectional view of the air discharge structure of the heat radiating fan according to the seventh embodiment of the present invention.

  A part of the airflow guiding structure of the air discharge port of the heat dissipating fan of the present invention is the same as the airflow guiding structure of the air discharge port of the conventional heat dissipating fan shown in FIG. The structure and function will not be described again in detail.

  Referring to FIGS. 1, 2, 3A and 3B, the airflow guiding structure of the wind discharge port of the heat radiating fan according to the first embodiment of the present invention includes a housing 10, a wind advance port 11, a wind discharge port 12, a base 13, A plurality of ribs 14 and an airflow guide ring 15 are included. The housing 10 can be made of plastic or metal. The wind advance inlet 11 and the wind outlet 12 are respectively formed on both sides of the housing 10. The base 13 is positioned at the wind outlet 12 of the housing 10 and can accommodate the fan wheel 20 (see FIG. 3A). The ribs 14 are connected between the housing 10 and the base 13 so as to be arranged radially and concentrically. The airflow guide ring 15 is provided around the rib 14 and is formed so as to be interposed between the base 13 and the wind outlet 12. The airflow guide ring 15 is formed so as to be parallel to the axial direction of the air discharge port 12 of the heat radiating fan. As shown in FIG. 3B, the length L in the axial direction of the airflow guide ring 15 on the wind outlet 12 side is preferably formed to be larger than the radial width W, and the airflow of the airflow guide ring 15 is further increased. Since an arcuate airflow guiding portion 151 is formed at the upper end close to the mouth 11 side, the occurrence of turbulent flow can be reduced. The ribs 14 can also be formed so as to be inclined along the blowing direction of the plurality of blades 21 of the fan wheel 20.

  Referring to FIG. 3A, an operation diagram of the airflow guiding structure of the wind discharge port of the heat radiating fan according to the first embodiment of the present invention is posted. When the fan wheel 20 rotates, the blades 21 of the fan wheel 20 draw in an airflow from the wind inlet 11 of the housing 10 and discharge the airflow from the wind outlet 12 (not shown). For example, heat can be radiated to a heat radiating fin or a central processing unit. When the airflow passes through the airflow guide ring 15 and the rib 14 of the wind exhaust port 12, the airflow that has flowed through the wind exhaust port 12 by the airflow guide ring 15 can be divided into two internal airflows, The airflow can be guided to a position close to the center of the wind exhaust port 12 or can be guided to a range close to the outer diameter of the wind exhaust port 12. Thereby, the heat radiating fan can radiate heat intensively to a specific position, or the air flow is located directly below the wind outlet 12 in a limited assembly space (for example, inside a notebook computer). You can be guided to the property that is not trying to dissipate heat. Therefore, the airflow guide ring 15 of the present invention has an effect of guiding the airflow.

  Moreover, as shown in FIG. 1, when the rib 14 is formed so as to be inclined along the air blowing direction of the blades 21 of the fan wheel 20, the rib 14 also has an effect of guiding the airflow. Moreover, the rib 14 located on the outer side of the airflow guide ring 15 may be formed to have a different inclination angle depending on the demand for use.

  Referring to FIGS. 4, 5, and 6, the airflow guiding structure of the wind discharge port of the heat radiating fan according to the second embodiment of the present invention includes a housing 10, a wind advance port 11, a wind discharge port 12, a base 13, and a plurality of seats. The rib 14 and the airflow guide ring 15 are included. The housing 10 can be made of plastic or metal. The wind advance inlet 11 and the wind outlet 12 are respectively formed on both sides of the housing 10. The base 13 is positioned at the wind outlet 12 of the housing 10 and can accommodate the fan wheel 20 (see FIG. 6). The ribs 14 are connected between the housing 10 and the base 13 so as to be arranged radially and concentrically. The airflow guide ring 15 is provided around the rib 14 and is formed so as to be interposed between the base 13 and the wind exhaust port 12. Further, the airflow guide ring 15 is arranged in the axial direction of the wind exhaust port 12 of the heat radiating fan. It is formed so as to be inclined in the outer diameter direction relative to. The ribs 14 can also be formed so as to be inclined along the blowing direction of the plurality of blades 21 of the fan wheel 20.

  Referring to FIG. 6, an operation diagram of the airflow guiding structure of the wind discharge port of the heat dissipating fan according to the second embodiment of the present invention is posted. When the fan wheel 20 rotates, the blades 21 of the fan wheel 20 draw in an airflow from the wind inlet 11 of the housing 10 and discharge the airflow from the wind outlet 12 (not shown). For example, heat can be radiated to a heat radiating fin or a central processing unit. When the airflow passes through the airflow guide ring 15 and the rib 14 of the wind exhaust port 12, the airflow guide ring 15 is formed to be inclined in the outer diameter direction relative to the axial direction of the wind exhaust port 12. The airflow can be guided to the range of the outer diameter of the wind outlet 12. As a result, the heat dissipating fan can expand the heat dissipating range, or the air flow is not located directly below the wind outlet 12 in a limited assembly space (for example, inside a notebook computer). It is possible to guide the heat to a property having a relatively large size, and to perform relatively uniform heat dissipation. Therefore, the airflow guide ring 15 of the present invention has an effect of guiding the airflow.

  As shown in FIG. 6, since the airflow guide ring 15 can relatively reduce the cross-sectional area on the wind discharge side along the inclination direction of the airflow guide ring 15, the wind pressure is increased by the airflow guide ring 15. be able to. Further, since the airflow close to the outer diameter range of the wind exhaust port 12 can increase the wind pressure by the inclination of the airflow guide ring 15 in the outer diameter direction, the airflow close to the center of the wind exhaust port 12 goes outward in the radial direction. Since it can be encouraged to flow toward, it can increase the efficiency of airflow.

  Further, as shown in FIG. 4, when the rib 14 is formed so as to be inclined along the blowing direction of the blade 21 of the fan wheel 20, the rib 14 also has an effect of guiding the airflow. Moreover, the rib 14 located on the outer side of the airflow guide ring 15 may be formed to have a different inclination angle depending on the demand for use.

  Referring to FIG. 7, an airflow guiding structure of a wind discharge port of a heat radiating fan according to a third embodiment of the present invention is posted. Compared to the first and second embodiments, in the third embodiment, the airflow guide ring 15 is formed so as to be inclined in the inner diameter direction relative to the axial direction of the wind discharge port 12, and thereby the airflow guide ring 15. Since the air flow can be guided to a position just below the base 13 of the wind outlet 12, the heat dissipation efficiency of the property to be radiated directly below the base 13 can be relatively increased. Further, since the airflow guide ring 15 can relatively reduce the cross-sectional area on the wind discharge side along the inclination direction of the airflow guide ring 15, the airflow guide ring 15 can increase the wind pressure. Further, since the air pressure close to the center of the wind outlet 12 can increase the wind pressure by the inclination of the airflow guide ring 15 in the inner diameter direction, the air current in the range of the outer diameter of the wind outlet 12 is directed inward in the radial direction. Since it can be encouraged to flow, heat can be dissipated by concentrating the airflow.

  Referring to FIG. 8, an airflow guiding structure of a wind discharge port of a heat radiating fan according to a fourth embodiment of the present invention is posted. Compared with the first, second, and third embodiments, in the fourth embodiment, the airflow guiding ring 15 ′ is formed so as to be inclined in the outer diameter direction and the inner diameter direction at the same time relative to the axial direction of the wind discharge port 12, that is, The cross section of the airflow guide ring 15 ″ is formed to be a triangle. Thereby, the airflow is simultaneously guided to the range of the outer diameter of the wind outlet 12 and directly below the base 13 by the airflow guide ring 15 ′. Therefore, the range of heat radiation can be expanded, and the heat radiation efficiency of the property to be radiated directly below the base 13 can be relatively increased. Since the airflow guide ring 15 'can relatively reduce the cross-sectional area on the wind discharge side along the inclination direction of', the air pressure can be increased by the airflow guide ring 15 '.

  9, 10, and 11, an airflow guiding structure of the air discharge port of the heat dissipating fan according to the fifth embodiment of the present invention is posted. Compared with Examples 1, 2, 3, and 4, in Example 5, the rib 14 is provided with a first airflow guiding ring 15a and a second airflow guiding ring 15b, and the second airflow guiding ring 15a is the first airflow guiding ring 15a. It is formed so as to be located inside the two air flow guide ring 15b. The first airflow guide ring 15 a is formed to be inclined in the outer diameter direction relative to the axial direction of the wind exhaust port 12, whereas the second airflow guide ring 15 b is formed in the axial direction of the wind exhaust port 12. It is formed so as to be inclined relative to the inner diameter direction. As a result, the first and second airflow guide rings 15a and 15b can guide the airflow to a position directly below between the first and second airflow guide rings 15a and 15b. In addition, it is possible to relatively increase the heat radiation efficiency of the property to be radiated directly below the position. Furthermore, since the cross-sectional area on the wind discharge side can be relatively reduced along the inclination direction of the first and second airflow guide rings 15a and 15b, the first and second airflow guide rings 15a and 15b Wind pressure can be increased. Furthermore, since the airflow between the first and second airflow guide rings 15a and 15b has already increased the wind pressure, the airflow close to the maximum outer diameter range and the minimum inner diameter range of the wind outlet 12 is Since it can be urged to flow right below between the two air flow guide rings 15a and 15b, heat can be radiated by concentrating the air flow.

  Referring to FIG. 12, the airflow guiding structure of the air discharge port of the heat dissipating fan according to the sixth embodiment of the present invention is posted. Compared to the fifth embodiment, in the sixth embodiment, the first airflow guiding ring 15a is formed so as to be inclined in the inner diameter direction relative to the axial direction of the wind outlet 12, whereas the second airflow guiding ring is formed. The ring 15 b is formed so as to be inclined in the outer diameter direction relative to the axial direction of the wind discharge port 12. As a result, the first and second airflow guiding rings 15 a and 15 b can guide the airflow to the range just below the base 13 and the outer diameter of the wind outlet 12. As a result, the heat dissipation fan can expand the range of heat dissipation, or the airflow can be guided to a property to be radiated that is not located directly below the wind outlet 12 in a limited assembly space. Alternatively, relatively uniform heat dissipation can be performed on an object having a relatively large size to be radiated. Therefore, the first and second airflow guiding rings 15a and 15b of the present invention have an effect of guiding the airflow. Furthermore, since the cross-sectional area on the wind discharge side can be relatively reduced along the inclination direction of the first and second airflow guide rings 15a and 15b, the first and second airflow guide rings 15a and 15b Wind pressure can be increased. Furthermore, the first and second airflow guide rings 15a, because the airflow that flows toward the bottom of the base 13 and the airflow that flows toward the outer diameter range of the wind outlet 12 have already increased the wind pressure. Since it is possible to encourage the airflow between 15b to flow directly below the base 13 or toward the outer diameter range of the wind discharge port 12, heat can be radiated by concentrating the airflow.

  Referring to FIG. 13, the airflow guiding structure of the air discharge port of the heat dissipating fan according to the seventh embodiment of the present invention is posted. Compared to the fifth and sixth embodiments, in the seventh embodiment, the first and second airflow guiding rings 15a and 15b are formed so as to be inclined in the outer diameter direction and the inner diameter direction at the same time. The cross-sections of the pull rings 15a and 15b are formed to be triangular. As a result, the first and second airflow guiding rings 15a and 15b simultaneously cause the airflow to fall within the range of the outer diameter of the wind discharge port 12, directly below the base 13 and between the first and second airflow guiding rings 15a and 15b. Therefore, the range of heat dissipation can be expanded. Furthermore, since the first and second airflow guiding rings 15a and 15b can relatively reduce the cross-sectional area on the wind discharge side along the inclination direction of the first and second airflow guiding rings 15a and 15b, The wind pressure in the above three sections can be increased.

  In addition, referring to FIGS. 1 to 13, in the present invention, airflow can be guided by at least one airflow guide ring 15, and the number of airflow guide rings 15, the inclination direction and the inclination angle are large. The size can be changed depending on the size of the blade 21 of the fan wheel 20 and the property to be radiated (for example, radiating fin), the position and shape of the installation, and the demand for heat radiation. Can be increased.

  As described above, according to the housing structure of the conventional heat dissipating fan shown in FIG. 14, since the turbulent flow is likely to occur at the wind outlet, the flow direction of the air current cannot be guided, and the wind pressure can be further increased. However, according to the airflow guiding structure of the wind discharge port of the heat dissipating fan of the present invention shown in FIG. 1, at least one airflow guiding ring is formed at the wind discharge port of the housing. Thus, in the present invention, the air flow can be classified, the air flow can be concentrated, the air flow can be guided to any position to radiate heat, and the wind pressure can be relatively increased. Therefore, the range of heat dissipation, concentration of airflow, noise due to air, overall heat dissipation efficiency, and design freedom in assembly can be increased.

  The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

It is a perspective view by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 1 of this invention. It is a top view by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 1 of this invention. It is sectional drawing along the AA line of FIG. It is a local enlarged view of FIG. 3A. It is a perspective view by the airflow guide structure of the wind discharge port of the heat radiating fan of Example 2 of this invention. It is a top view by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 2 of this invention. It is sectional drawing along the BB line of FIG. It is sectional drawing by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 3 of this invention. It is sectional drawing by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 4 of this invention. It is a perspective view by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 5 of this invention. It is a top view by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 5 of this invention. It is sectional drawing along CC line of FIG. It is sectional drawing by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 6 of this invention. It is sectional drawing by the airflow guidance structure of the wind discharge port of the heat radiating fan of Example 7 of this invention. It is a perspective view of the housing structure of the conventional heat radiating fan.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Housing body 11 Wind inlet 12 Wind outlet 13 Base 14 Rib 15 Airflow guide ring 15 'Airflow guide ring 151 Airflow guide part 15a First airflow guide ring 15b Second airflow guide ring 15a' 1st Airflow guide ring 15b 'Second airflow guide ring 20 Fan wheel 21 Blade

Claims (8)

  A base seat (13), a plurality of ribs (14) and at least one airflow guide ring (15) are provided at the wind outlet (12) of the housing (10) of the heat radiating fan. Is used for mounting the fan wheel (20), and the fan wheel (20) is formed with a plurality of blades (21), and the plurality of ribs (14) are radially connected to the housing (10). Connected between the bases (13), at least one airflow guide ring (15) is fixed to the rib (14), and the airflow guide ring (15) is arranged in the axial direction on the wind outlet (12) side. By forming the length to be larger than the width in the radial direction, when the fan wheel (20) rotates, the airflow is divided by the airflow guide ring (15), the airflow is concentrated, and the airflow is further increased. Or used to guide the flow direction of Airflow Shirube引 structure of the wind outlet of the radiator fan, characterized in that that can.   The air flow guide of the air discharge port of the heat radiating fan according to claim 1, wherein the air flow guide ring (15) is formed to be parallel to an axial direction of the air discharge port (12) of the heat radiating fan. Construction.   The air exhaust of the heat radiating fan according to claim 1, wherein the air flow guide ring (15) is formed so as to be inclined in an outer diameter direction relative to an axial direction of the air exhaust port (12) of the heat radiating fan. Air flow guide structure at the exit.   2. The air discharge port of a heat radiating fan according to claim 1, wherein the air flow guide ring (15) is formed so as to be inclined in an inner diameter direction relative to an axial direction of the air discharge port (12) of the heat radiating fan. Airflow guiding structure.   The airflow guide ring (15 ′) is formed so as to be inclined in the outer diameter direction and the inner diameter direction simultaneously with respect to the axial direction of the wind discharge port (12) of the heat radiating fan, that is, the airflow guide ring (15 ′). 2. The airflow guiding structure of a wind discharge port of a heat radiating fan according to claim 1, wherein the cross section is formed in a triangular shape.   2. The airflow guiding structure of a wind outlet of a heat radiating fan according to claim 1, wherein the rib (14) is formed so as to be inclined along a blowing direction of the blade (21) of the fan wheel (20).   7. The airflow guiding structure of a wind discharge port of a heat radiating fan according to claim 6, wherein the ribs (14) are formed to have different inclination angles on the inside and outside of the airflow guiding ring (15).   An airflow guiding portion (151) having an arc shape is formed at an upper end of the airflow guiding ring (15) near the wind inlet (11). Airflow guiding structure.

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