Heat dissipation box

Abstract

The utility model provides a heat dissipation box. Comprising a shell extending in the horizontal direction and internally provided with a containing space, and an air inlet fan close to the front side face of the shell and used for sucking external air into the containing space. The air outlet fan is close to the front side face of the shell, is separated from the air inlet fan by a certain distance in the horizontal direction and is used for discharging air in the containing space out of the shell; the protection unit comprises a supporting frame and a protection cover; the supporting frame is arranged on the outer side of the front side face of the shell, and a through hole communicating with the containing space and the outside and close to the air inlet fan and / or the air outlet fan is formed in the middle of the supporting frame. The protection cover is a semi-closed box body with an opening in one end, the protection cover covers the supporting frame, and at least one part of the inner wall of the protection cover is separated from the supporting frame to form a gas channel communicated with the through hole and the shell. Compared with the prior art, the heat dissipation box not only realizes heat dissipation inside the heat dissipation box, but also can reduce rainwater, dust and other foreign matters from entering the box.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat dissipation box. Background Technology

[0002] Electronic components such as batteries and substrates often generate heat during use. If heat cannot be dissipated in time, it can easily accumulate and damage the electronic components. Therefore, it is particularly important to incorporate heat dissipation structures into the design of electronic components.

[0003] On the other hand, outdoor electronic equipment such as lighting, monitoring, and broadcasting devices, installed outdoors, are inevitably exposed to sun and rain if left unprotected. To prevent this, protective casings are usually installed on the outside of the circuit boards and other electronic components for sealing. However, the sealed structure is not conducive to air circulation and heat dissipation, especially when high-heat products such as batteries are installed inside the casing. The internal temperature will rise rapidly and significantly, which can also damage the electronic components. Utility Model Content

[0004] Therefore, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a heat dissipation box.

[0005] The technical solution adopted by this utility model is as follows:

[0006] A heat sink includes a housing extending horizontally and having an internal receiving space, and further includes:

[0007] An intake fan, located near the front side of the housing, is used to draw external air into the containment space;

[0008] An exhaust fan is located near the front side of the housing and is separated from the intake fan by a certain distance in the horizontal direction, and is used to exhaust the gas in the containment space outside the housing.

[0009] The protective unit includes a support frame and a protective cover; the support frame is disposed on the outer side of the front side of the housing, and the middle of the support frame is provided with a through hole that connects the receiving space and the outside and is close to the air intake fan and / or the air outlet fan; the protective cover is a semi-closed box with an opening at one end, the protective cover covers the support frame, and at least a portion of its inner wall is separated from the support frame to form a gas passage that communicates with the through hole and the housing.

[0010] Compared with the prior art, the heat dissipation box of this utility model is equipped with dual fans, which allows airflow to pass through the entire heat dissipation box and carry away the heat of the electronic components inside the box. At the same time, its protection unit can reduce the entry of rainwater, dust and other foreign objects into the box, reducing the damage to electronic components.

[0011] In some embodiments, the protective unit further includes a filter screen that covers the through-hole and is close to the protective cover to prevent foreign objects from entering the housing through the through-hole.

[0012] In some embodiments, the bottom of the protective cover has a downward-facing drainage hole near the inner wall of the protective cover facing the through hole, to prevent rainwater from accumulating inside the protective cover.

[0013] In some embodiments, the front side of the housing has two mounting holes through which the intake fan and the exhaust fan pass respectively. The mounting holes communicate with the through hole to facilitate airflow.

[0014] In some embodiments, the protection unit further includes a first seal and a second seal; the first seal seals the gap between the support frame and the front side of the housing; the second seal seals the gap between the filter and the support frame, further improving the sealing performance of the housing.

[0015] In some embodiments, the diameter of the through hole is larger than the diameter of the mounting hole to facilitate airflow into and out of the support frame.

[0016] In some embodiments, the support frame has a protrusion that abuts against the inner wall of the protective cover along the axial direction of the through hole, further facilitating airflow into and out of the housing.

[0017] In some embodiments, the outer contour of the support frame is a rectangle including an upper side, a lower side, a left side, and a right side, projected along the axial direction of the through hole. The protective cover surrounds the upper side, lower side, left side, and right side of the support frame and is spaced a certain distance from them. Airflow can enter and exit the housing from multiple directions, increasing the airflow rate inside the housing.

[0018] In some embodiments, the upper side, left side and right side of the support frame are provided with communicating drainage grooves to guide rainwater entering the housing to drainage holes.

[0019] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the lamp with an electrical control box in this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the electrical control box in this utility model;

[0022] Figure 3 This is an exploded view of the electrical control box in this utility model;

[0023] Figure 4 This is a front view of the electrical control box in this utility model;

[0024] Figure 5 For along Figure 4 A cross-sectional view along the YY direction;

[0025] Figure 6 This is an exploded view of the protection unit in this utility model;

[0026] Figure 7 for Figure 5 Enlarged view of part A in the middle;

[0027] Figure 8 For along Figure 4 A cross-sectional view along the ZZ direction.

[0028] Figure 9 A left view of the control box in another embodiment;

[0029] Figure 10 This is a cross-sectional view of the electrical control box when projected vertically in another embodiment.

[0030] Explanation of reference numerals in the attached drawings: 1. Electrical control box; 10. Electrical component; 11. Base plate; 12. Battery; 20. Heat sink box; 21. Housing; 211. Front side; 212. Rear side; 213. Upper side; 214. Lower side; 215. Mounting hole; 216. Mounting protrusion; 217. Mounting part; 22. End cover; 23. Inlet fan; 24. Outlet fan; 25. Protection unit; 251. Support frame; 2511. Through hole; 2512. Protrusion; 2513. Drainage groove; 252. Protective cover; 2521. Drainage hole; 253. Filter screen; 254. First seal; 255. Second seal; 2. Lamp body; 3. Solar panel; 4. Support base. Detailed Implementation

[0031] The applicant in this case has researched the problem of electronic products, especially outdoor electronic products, easily malfunctioning inside their enclosures. The research revealed a conflicting requirement in the structural design of existing outdoor electronic products: while batteries and other electronic components need to be tightly encased to prevent contact with rain, dust, or other foreign objects, they also require a well-ventilated environment for rapid heat dissipation. To resolve this contradiction, the applicant provides a heat dissipation box for protecting electronic products. This box utilizes dual fans to facilitate airflow and heat exchange within the box, removing heat. Furthermore, the fan covers feature a uniquely structured protective unit that reduces the entry of rain, dust, and other foreign objects into the enclosure, achieving the goal of both unimpeded heat dissipation and protection of the internal electronic components. The technical solution is described in detail in the following embodiments.

[0032] Please see Figure 1 The present invention provides a lighting fixture with an electrical control box, comprising an electrical control box 1, a lamp body 2, a solar panel 3, and a support base 4. The electrical control box 1, the lamp body 2, and the support base 4 are all installed below the solar panel 3. The support base 4 is located on the side away from the lamp body 2, and the electrical control box 1 is located between the support base 4 and the lamp body 2. The support base 4 is used to connect to a support structure such as a lamp post, allowing the entire lighting fixture with the electrical control box to be installed at a high position.

[0033] Please see Figures 2 to 5 The electrical control box 1 includes an electrical component 10 and a heat sink 20.

[0034] The electrical component 10 includes a substrate 11 and a battery 12, which are stacked and electrically connected. The lamp body 2 and the solar panel 3 are electrically connected to the substrate 11. The solar panel 3 converts light energy into electrical energy through the substrate 11 and supplies power to the lamp body 2. Excess electrical energy is stored in the battery 12.

[0035] The heat dissipation box 20 includes a housing 21, an end cap 22, an intake fan 23, an exhaust fan 24, and a protection unit 25. In this embodiment, the housing 21 extends horizontally, is hollow inside, and has openings at opposite ends in the horizontal direction. The end cap 22 covers the openings at both ends of the housing 21, thereby forming a receiving space, in which the electrical component 10 is installed. The front side 211 of the housing 21 faces the support base 4, and two mounting holes 215 are provided on the front side 211. The two mounting holes 215 are arranged in the left-right direction and separated by a distance. The intake fan 23 and the exhaust fan 24 are respectively close to the two mounting holes 215 and electrically connected to the substrate 11, so that external air is blown into the receiving space and air in the receiving space is extracted from the receiving space. The intake fan 23 and / or the exhaust fan 24 may be located inside the front side 211, or pass through the mounting holes 215, so that at least a part of it is located outside the front side 211. Furthermore, the inner top wall of the housing 21 is provided with a mounting protrusion 216, and the mounting protrusion 213 protrudes into the accommodating space. The electrical component 10 is fixed to the mounting protrusion 213 by screws or the like and is separated from the inner bottom wall of the housing 21 by a certain distance to prevent water accumulation inside the housing 21 from affecting the electrical component 10. In this embodiment, the housing 21 includes a front side 211 and a rear side 212 extending vertically and arranged opposite to each other, and an upper side 213 and a lower side 214 arranged vertically and respectively connecting the front side 211 and the rear side 212. The lamp body 2 is located on the side closer to the rear side 214.

[0036] Please refer to the following: Figures 5 to 8 The protective unit 25 is respectively covered on the outside of the two mounting holes 215, and includes a support frame 251, a protective cover 252, a filter screen 253, a first sealing element 254, and a second sealing element 255. The support frame 251 is disposed outside the front side 211 of the housing 21, and has a through hole 2511 communicating with the mounting holes 215 in its middle. In one embodiment, the mounting hole 215 and the through hole 2511 are coaxial, and the diameter of the through hole 2511 is greater than or equal to that of the mounting hole 215, and the through hole 2511 surrounds the mounting hole 215. The air intake fan 23 or the air outlet fan 24 is located inside the through hole 2511. In this embodiment, projected along the axis of the through hole 2511, the outer contour of the support frame 251 is a rectangle surrounded by the upper side, lower side, left side, and right side, and the through hole 2511 is opened in its middle. The filter screen 253 covers the side of the through hole 2511 facing away from the housing 21 to prevent foreign objects from entering the housing 21 through the through hole 2511. The protective cover 252 is a semi-closed box with an opening at one end, which faces the support frame 251 and covers the side of the support frame 251 facing away from the housing 21. It is fixed to the support frame 251 with screws or the like and is separated from the side of the support frame 251 by a certain distance. The filter screen 253 is located between the support frame 251 and the protective cover 252. In this embodiment, the protective cover 252 surrounds the outer sides of the upper, lower, left, and right sides of the support frame 251 and is spaced a certain distance apart. Projecting along the axis of the through hole 2511, the support frame 251 has protrusions 2512 at its four corners protruding towards the protective cover 252. The protective cover 252 abuts against the protrusions 2512 on the inner wall of the support frame 251, thus separating the inner wall of the protective cover 252 from the through hole 2511 by one end, thereby forming a gas passage connecting the through hole 2511. The first sealing member 254 and the second sealing member 255 are sealing rings made of rubber or the like. The first sealing member 254 is disposed between the support frame 251 and the housing 21 to seal the gap between the support frame 251 and the housing 21. The second seal 255 is disposed between the filter screen 253 and the support frame 251 and surrounds the through hole 2511 to seal the gap between the filter screen 253 and the support frame 251.

[0037] In one embodiment, the bottom of the protective cover 252 is provided with a plurality of drainage holes 2521, allowing rainwater entering the protective cover 252 to exit through the drainage holes 2521, preventing rainwater from accumulating inside the protective cover 252. In this embodiment, the drainage holes 2521 are located on the bottom wall surface of the protective cover 252 facing the lower side of the support frame 251 and away from the support frame 251, allowing rainwater to quickly leave the protective cover 252. Furthermore, the inner bottom surface of the protective cover 252 is inclined towards the drainage holes 2521 to accelerate the outflow of rainwater.

[0038] In one embodiment, the support frame 251 has a communicating drainage groove 2513 on its upper side, left side and right side. Through the drainage groove 2513 extending from the top to the bottom of the support frame 251, some of the rainwater that enters the protective cover 252 from the top can be directed to the drainage hole 2521.

[0039] In one embodiment, such as Figure 9 As shown, the front side 211 of the housing 21 is inclined relative to the vertical direction, such that the distance from the side where the front side 211 and the lower side 214 meet to the rear side 212 is less than the distance from the side where the front side 211 and the upper side 213 meet to the rear side 212. The protective unit 25 is also inclined accordingly. The outer side of the upper part of the protective cover 252 tends to face away from the housing 21, and the outer side of the lower part tends to face the housing 21. The drainage hole 2521 tends to face the housing 21. When rainwater hits the upper part of the protective cover 252, it is not easy to enter the protective cover 252, while the rainwater inside the protective cover 252 can easily flow out of the protective cover 252.

[0040] In one embodiment, such as Figure 10 As shown in the diagram, projected vertically, the front side 211 of the housing 21 has two relatively inclined mounting portions 217. The two mounting portions 217 extend from the middle to the end caps 22 on the left and right sides, and the distance to the rear side 212 gradually increases. The air intake fan 23, the air outlet fan 24, the protective unit 25, and the two mounting holes 215 are respectively opened on the two mounting portions 217, so that the air intake fan 23 and the air outlet fan 24 are inclined to each other. Most of the airflow drawn in by the air intake fan 23 flows to one end cap 22 and then bounces back to the other end cap 22, and then bounces back to the air outlet fan 24, thereby prolonging the time that the gas stays in the containment space and making the heat exchange more complete.

[0041] Please refer to the following: Figure 7 and Figure 8As shown by the arrows in the figure, during operation, the intake fan 23 creates a negative air pressure. Gas flows into the protective cover 252 from the opening of the protective cover 252 covering the intake fan 23, along the upper, lower, left, and right sides of the support frame 251, reaches the through hole 2511, and then flows into the receiving space. Under the action of the exhaust fan 24, the gas flows towards the exhaust fan 24. Driven by the exhaust fan 24, the gas flows out of the receiving space from the through hole 2511 of the protective cover 252 covering the exhaust fan 24, and then flows from the protective cover 252 covering the exhaust fan 24 and the support frame 251 until it flows from the protective cover 252 into the external space, thereby carrying away the heat in the receiving space. During this process, since the intake fan 23 and the exhaust fan 24 are located on the same side of the housing 21, the incoming gas needs to flow through the entire interior of the housing 21 before it can flow out, thereby fully contacting the substrate 11 and battery 12 in the housing space and carrying away their heat, achieving a good heat dissipation effect. Meanwhile, the protective cover 252 and the support frame 251 surround the outside of the intake fan 23 and / or the exhaust fan 24, and the gas needs to pass through a detour gas channel to enter the housing space, thereby reducing the entry of rainwater, dust, etc. into the interior of the housing space.

[0042] Furthermore, the lamp in this invention is powered by solar energy; however, it can also be powered by other external DC or AC power sources as needed. The heat dissipation box 20 can also contain other heat-generating elements for protection and heat dissipation.

[0043] Compared with the prior art, the heat dissipation box of this utility model has the following advantages:

[0044] 1. It can both dissipate heat from the inside of the heat sink and reduce the entry of rainwater, dust and other foreign objects into the sink;

[0045] 2. It can quickly drain rainwater accumulated in the protective unit;

[0046] 3. Good sealing performance;

[0047] 4. Airflow can enter the protection unit from multiple directions, increasing the airflow rate inside the casing.

[0048] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A heat dissipation box, comprising a shell extending horizontally and having an internal receiving space, characterized in that, Also includes: An intake fan, located near the front side of the housing, is used to draw external air into the containment space; An exhaust fan is located near the front side of the housing and is separated from the intake fan by a certain distance in the horizontal direction, and is used to exhaust the gas in the containment space outside the housing. The protective unit includes a support frame and a protective cover; the support frame is disposed on the outer side of the front side of the housing, and the middle of the support frame is provided with a through hole that connects the receiving space and the outside and is close to the air intake fan and / or the air outlet fan; the protective cover is a semi-closed box with an opening at one end, the protective cover covers the support frame, and at least a portion of its inner wall is separated from the support frame to form a gas passage that communicates with the through hole and the housing.

2. The heat dissipation box according to claim 1, characterized in that: The protective unit also includes a filter screen that covers the through-hole and is close to the protective cover.

3. The heat dissipation box according to claim 1, characterized in that: The bottom of the protective cover has a downward-facing drainage hole, which is located near the inner wall of the protective cover facing the through hole.

4. The heat dissipation box according to claim 3, characterized in that: The inner bottom wall of the protective cover is inclined toward the drainage hole.

5. The heat dissipation box according to claim 2, characterized in that: The front side of the housing has two mounting holes, through which the intake fan and the exhaust fan pass respectively, and the mounting holes are connected to the through hole.

6. The heat dissipation box according to claim 5, characterized in that: The protection unit further includes a first seal and a second seal; the first seal seals the gap between the support frame and the front side of the housing; the second seal seals the gap between the filter and the support frame.

7. The heat dissipation box according to claim 5, characterized in that: The diameter of the through hole is larger than the diameter of the mounting hole.

8. The heat dissipation box according to claim 3, characterized in that: Along the axial direction of the through hole, the support frame has a protrusion that abuts against the inner wall of the protective cover.

9. The heat dissipation box according to claim 8, characterized in that: Projected along the axial direction of the through hole, the outer contour of the support frame is a rectangle including an upper side, a lower side, a left side, and a right side. The protective cover surrounds the upper side, lower side, left side, and right side of the support frame and is spaced a certain distance from them.

10. The heat dissipation box according to claim 9, characterized in that: The support frame has interconnected drainage grooves on its upper, left, and right sides.

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