WO2015100835A1

WO2015100835A1 - Heat dissipation structure and high-shed lamp provided with heat dissipation structure

Info

Publication number: WO2015100835A1
Application number: PCT/CN2014/071678
Authority: WO
Inventors: 孙宗明; 张晶晶
Original assignee: 深圳市有为光电有限公司
Priority date: 2014-01-04
Filing date: 2014-01-28
Publication date: 2015-07-09

Abstract

A heat dissipation structure and a high-shed lamp provided with the heat dissipation structure. The heat dissipation structure consists of a radiator (20) and a light source module carrier (30). The radiator (20) comprises a heat transfer barrel (203), a fastening ring (202), and multiple heat dissipation fins (201). Side edges of the adjacent heat dissipation fins (201) are separated, and a gap is formed between the side edges. The main body (308) of the light source module carrier (30) is in threaded connection with internal thread (204) of the heat transfer barrel (203) by means of external thread (304). The high-shed lamp also comprises a light source (401) and a power supply box (10) provided with a driving power supply (108). By improving the heat dissipation efficiency and the air convection efficiency of the heat dissipation structure, the heat dissipation efficiency of the high-shed lamp is improved.

Description

Heat dissipation structure and high bay light with the same

技术领域Technical field

The invention relates to a high bay light and a heat dissipating structure thereof.

背景技术Background technique

The high-bay lamp is a common lamp for indoor lighting, and is generally connected by a power box, a heat dissipation structure and a light source.

Both the power box and the light source generate heat. In addition to heat dissipation in contact with the air, the power box and the light source mainly dissipate heat through the heat dissipation structure. The conventional heat dissipation structure is mainly composed of a small-diameter heat-conducting column and a plurality of heat-dissipating blades connected to the outer peripheral surface thereof, and the top is connected to the power supply box, and the bottom is connected to the light source, and has the following defects: the bottom and the light source are only in contact with each other for heat transfer, It is difficult to completely fit, the actual contact area is smaller, and the heat transfer efficiency is further reduced; the sides of the heat dissipating blades are completely connected with the heat conducting columns, and the hot air is easily accumulated between the heat dissipating blades, which makes it difficult to convect and discharge heat; In order to achieve the required heat dissipation effect, it is necessary to increase the height of the heat sink and the area of the heat dissipation blade, resulting in an increase in the weight of the heat sink, a safety hazard, and an increase in production cost.

The heat dissipation structure reduces the heat dissipation efficiency of the high-bay lamp, and the top and bottom of the heat dissipation structure are respectively connected to the power supply box and the lamp cover, and the hot air is easily accumulated between the heat dissipation blades, which makes it difficult to convect and discharge heat, resulting in an increase in the temperature of the high-bay lamp. Reduce the life and efficiency of light sources (such as LEDs), causing light decay and affecting lighting effects.

发明内容Summary of the invention

The technical problem to be solved by the present invention is to provide a heat dissipation structure with higher heat dissipation efficiency and a high ceiling lamp with the heat dissipation structure.

In order to solve the above technical problems, the present invention provides a heat dissipation structure comprising a heat sink and a light source module carrier; the heat sink comprises a heat transfer tube, a fastening ring and a plurality of heat dissipation blades, wherein the heat transfer tube is provided with internal threads, and sides of the heat dissipation blades a length greater than a height of the heat transfer cylinder, a lower side of each of the heat dissipating blades being fixedly coupled to an outer peripheral surface of the heat transfer cylinder and parallel to an axis of the heat transfer cylinder, the fastening ring being annular and having a diameter The heat transfer cylinders are identical, and the fastening ring is fixedly connected to the side tops of the heat dissipating blades, and the sides of the adjacent heat dissipating blades are separated from each other except for the portion connected to the fastening ring and the heat transfer cylinder Leave a gap;

The light source module carrier comprises a main body, a bottom plate, a convex portion and a rib plate, wherein the main body is a cylindrical shape whose diameter and height are matched with the heat transfer tube, and an outer peripheral surface thereof is provided with an external thread matched with the internal thread The top of the main body is provided with a convex portion which is convex around the axial center and extends to the top edge of the main body, and the convex portion is provided with a plurality of vertical rib plates, and the bottom plate is disc-shaped and has a diameter The bottom plate is disposed at a bottom of the main body and coaxial with the bottom of the main body, and a plurality of air convection holes are vertically distributed along the edge of the bottom plate, and the main body of the light source module carrier passes the external thread and heat transfer. The internal thread of the barrel is threaded.

Preferably, the plurality of heat dissipating blades are provided with a second screw hole extending from the top to the bottom thereof and parallel to the axis of the heat transfer cylinder, and the top end and the bottom end of the second screw hole are respectively provided with internal threads.

Preferably, the outer circumference of the heat transfer cylinder is every 45 The heat dissipating fins on the central angle of the center are provided with the second screw holes, and the distance from the second screw holes to the axis of the heat transfer cylinder coincides with the distance between the adjacent second screw holes.

Preferably, the heat dissipating fins have a rectangular sheet shape.

Preferably, the bottom of the heat dissipating vane is flush with the bottom of the heat transfer cylinder.

Preferably, the heat dissipating fin is perpendicular to an outer peripheral surface of the heat transfer cylinder.

Preferably, a groove is provided along the outer peripheral surface of the main body and the bottom plate, and the diameter of the groove is smaller than the diameter of the outer thread.

In a preferred embodiment, the convex portion is an approximately circular truncated cone or a conical shape in which the bus bar is concavely curved toward the main body.

Preferably, the ribs are radially evenly distributed around the axis of the body.

Preferably, the second screw hole has a C-shaped cross-sectional shape.

In a preferred embodiment, the convex portion is provided with a plurality of vertical mounting posts, and a cooling fan that can blow air to the convex portion is fixed on the mounting post.

The invention also provides a high-bay lamp, comprising a power supply box with a driving power source, a heat dissipation structure and a light source, the heat dissipation structure being composed of a heat sink and a light source module carrier, the heat sink comprising a heat transfer tube and fastening a ring and a plurality of heat dissipating blades, wherein the heat transfer cylinder is provided with internal threads, and a side length of the heat dissipating blades is greater than a height of the heat transfer tubes, and a lower side of each of the heat dissipating blades and an outer peripheral surface of the heat transfer tube Fixedly connected and parallel to the axis of the heat transfer cylinder, the fastening ring is annular and has a diameter consistent with the heat transfer cylinder, and the fastening ring is fixedly connected to the top side of the heat dissipating blade, except a portion of the fastening ring and the heat transfer tube being connected, the side edges of the adjacent heat dissipation blades are separated from each other and leaving a gap, and the top of the heat sink is fixedly connected to the bottom of the power supply box;

The light source module carrier comprises a main body, a bottom plate, a convex portion and a rib plate, wherein the main body is a cylindrical shape whose diameter and height are matched with the heat transfer tube, and an outer peripheral surface thereof is provided with an external thread matched with the internal thread The top of the main body is provided with a convex portion which is convex around the axial center and extends to the top edge of the main body, and the convex portion is provided with a plurality of vertical rib plates, and the bottom plate is disc-shaped and has a diameter The bottom plate is disposed at a bottom of the main body and coaxial with the bottom of the main body, and a plurality of upper and lower air convection holes and threaded holes provided with internal threads are uniformly distributed along the edge of the bottom plate, and the light source module carrier The main body is screwed to the internal thread of the heat transfer cylinder by an external thread;

The light source is fixedly connected to the bottom of the light source module carrier, and the light source is connected to the driving power source through a wire.

Preferably, the heat dissipating fins have a rectangular sheet shape.

Preferably, the convex portion is provided with a plurality of vertical mounting posts, and a cooling fan that can blow air to the convex portion is fixed on the mounting post, and the cooling fan is connected to the driving power source through a wire. .

Preferably, the number of the mounting posts is three and is evenly distributed around the axis of the main body.

Preferably, the second screw hole has a C-shaped cross-sectional shape.

Preferably, the power supply box comprises a box body, a driving power source fixed to an inner side of the top wall of the box body, and two terminal blocks, wherein the box body is composed of a top wall and a side wall integrally formed along an edge of the top wall. The bottom of the box body is open, and the opposite side edges of the bottom of the box body are respectively provided with a first screw hole corresponding to the second screw hole, and the top end of the first screw hole and the second screw hole are screwed, the driving power source The input end and the output end are respectively connected to the two terminal blocks, and one of the terminal blocks connected to the output end of the driving power source is connected to the cooling fan and the light source through a wire, and the top of the box body is provided with A fixed cable connector for the input power cord.

As a preferred form, the shape approximates U The two ends of the power fixing bracket are connected to the inner side and the middle of the top wall of the casing on both sides of the driving power source, and the driving power source is pressed against the inner side of the top wall of the casing.

Preferably, the number of the power fixing brackets is at least two, and the two ends of the power fixing bracket are connected to the inner side of the top wall of the box by screws.

Preferably, a lifting ring is arranged in the center of the top of the box body.

Preferably, the opposite ends of the bottom of the box body are respectively provided with a ventilation plate, and the ventilation plate is provided with a plurality of through holes, and the edges thereof are connected to the bottom edge of the box body by screws.

Preferably, the top wall of the casing is provided with a plurality of venting holes.

Preferably, the venting plate covers less than half of the area of the bottom of the casing.

Preferably, the terminal block is screwed to the inner side of the top wall of the casing.

Preferably, a PC cover and a lamp cover are also included, the PC The cover covers the light source, and the edge thereof is screwed to the threaded hole; the center of the lamp cover is open and can pass through the PC cover, and the edge of the hole is screwed to the bottom end of the second screw hole.

The invention improves the heat transfer efficiency of the heat dissipation structure and the air convection efficiency, and improves the heat dissipation structure and the heat dissipation efficiency of the high shed lamp, as follows:

1 The light source module carrier is connected to the light source and absorbs the heat generated by the light source. In order to improve the heat transfer efficiency, unlike the single-sided contact heat transfer of the prior art, the main body of the light source module carrier is provided with an external thread, and the heat transfer tube of the heat sink The internal thread is provided, and the two are screwed. The contact area of the thread surface is about twice the plane contact under the same connection length, and the heat transfer efficiency is doubled; the groove is arranged along the outer peripheral surface of the body and the bottom plate. The diameter of the groove is smaller than the external thread, and the main body can be completely connected to the heat transfer tube when the main body is screwed with the heat transfer tube, so that the bottom plate and the heat dissipating blade are in close contact with each other, and the heat generated by the light source can be transmitted to the heat dissipating blade through the bottom plate. In summary, as the heat transfer efficiency of the heat dissipation structure is improved, the heat of the high-bay light source can be transmitted to the heat dissipation structure in a timely manner for heat dissipation, and the temperature of the high-bay light source can be lowered in time.

2 The heat dissipation structure is composed of a heat sink and a light source module carrier, and a gap is left between adjacent side edges of the heat dissipation blades connected to the heat transfer tube, and the gap helps the air in the air radiator to circulate laterally and longitudinally. The radiator has the function of multi-directional air circulation, which removes the heat between the heat-dissipating blades in time, avoids the accumulation of heat between the heat-dissipating blades, improves the air convection efficiency, and has higher heat exchange efficiency between the heat sink and the air, thereby improving heat dissipation efficiency. .

In summary, as the heat transfer efficiency of the heat dissipation structure and the air convection efficiency are improved, the heat of the high-bay light source can be more efficiently transmitted to the heat dissipation structure and discharged through the heat dissipation structure, thereby improving the heat dissipation efficiency of the high-bay lamp.

In order to further improve the air convection efficiency of the heat sink, the convex portion is further provided with a heat dissipating fan that can supply air to the convex portion. When the heat dissipating fan is activated and blows air to the convex portion, the convex portion and the bottom edge of the rib are in heat transfer. At the top of the cylinder, there is a gap between the sides of the adjacent heat dissipating blades, and the cooling fan can blow the air in the radiator to the convex portion and the rib plate, and the convex portion and the rib plate can guide the wind from the center to the heat dissipating blade at the edge During the process, the heat between the heat dissipating blades is taken away to prevent heat from accumulating between the heat dissipating blades, and the heat dissipating blades are used for heat dissipation. The busbar of the convex portion is a concave arc type, which can reduce the loss of wind force when guiding and guiding the wind direction, conforms to the aerodynamic principle, ensures wind power intensity, thereby ensuring heat dissipation efficiency. ; The ribs are straight-shaped, and the direction is the same as that of the heat-dissipating blades, that is, they are radially distributed with the axis of the heat-transfer cylinder as a center, which can directly guide the wind to the heat-dissipating blades to further avoid interference and loss; and the other side of the heat-dissipating fan opposite to the convex portion Generating a negative pressure that sucks air between adjacent heat dissipating blades and between the heat dissipating fan and the power supply box, that is, due to the presence of side gaps of adjacent heat dissipating blades, above the cooling fan, the heat dissipating blades The air between the air flows toward the center due to the negative pressure generated by the cooling fan. Below the cooling fan, the air between the heat dissipating blades is discharged to the outside by the wind generated by the cooling fan, so that convection is formed between the cooling fins, and the efficiency of heat exchange with the air is accelerated. Further improving the heat dissipation efficiency of the heat dissipating blade; in addition, the wind flows through the convex portion and the rib plate from the top edge of the main body to the horizontally outward side, and generates a negative pressure above the bottom plate, and the edge of the bottom plate is provided between the light source and the lamp cover. The air convection hole generates a negative pressure that can suck the air between the light source and the lamp cover through the air convection hole and discharge it. The light-free source continuously heats the air around it and cannot be discharged, reducing the temperature around the light source; the negative pressure can also draw air from the bottom edge of the box body and the vent hole of the box body, so that the air follows the bottom edge of the box body and the vent hole Entering the heat sink further reduces the temperature of the power box, thereby reducing the overall temperature of the high bay light.

附图说明DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Figure 1 is an exploded view of the three-dimensional part of the high bay light.

Figure 2 shows an exploded view of the components of the high bay light.

Figure 3 is a perspective view of a high bay light.

Figure 4 is a front view of the high bay light.

Figure 5 is a front cross-sectional view of the high bay light.

Figure 6 is a perspective view of the power supply box.

Figure 7 shows the bottom view of the power box.

Figure 8 is a perspective view of the heat sink.

Figure 9 shows a top view of the heat sink.

Figure 10 is a cross-sectional view of the heat sink.

Figure 11 is a perspective view of the light source module carrier (with cooling fan).

Figure 12 is a front view of the light source module carrier (with cooling fan).

Figure 13 is a perspective view of the light source module carrier (without a cooling fan).

Figure 14 is a perspective view of the light source module carrier (without a cooling fan).

具体实施方式detailed description

As shown in FIG. 1 to FIG. 5, the high-bay lamp includes a power supply box 10 connected in sequence, a heat dissipation structure composed of the heat sink 20 and the light source module carrier 30, and a light source 401 and a lamp cover 403 thereof. The light source 401 is preferably an LED.

6 and 7, which are a perspective view and a bottom view of the power supply box 10, the power supply box 10 includes a case 101 composed of a top wall and a side wall, the side walls are integrally formed along the edge of the top wall, and the inside of the case 101 is Empty, open at the bottom. The opposite side edges of the bottom portion of the casing 101 are respectively provided with three first screw holes 109 of equal spacing, and the angle between the adjacent first screw holes 109 on each side edge and the bottom center of the casing 101 is 45. The six first screw holes 109 are symmetrically distributed around the center of the bottom of the casing 101, and the outermost four first screw holes 109 are equally spaced. A lifting ring 102 is disposed at the center of the top of the casing 101, and the lifting ring 102 is used for mounting and fixing a high-bay lamp.

Different from the prior art, since the bottom of the power supply box 10 is open, the bottom plate is omitted, material is saved, and the cost is reduced and the weight is reduced. For fixing the driving power source 108, the two ends of the U-shaped power fixing bracket 105 are screwed (or other known connection methods such as welding) to press the driving power source 108 on the inner side and the middle of the top wall of the casing 101 on both sides of the driving power source 108. The driving power source 108 is fixed to the inner side of the top wall of the casing 101 on the inner side of the top wall of the casing 101, and the number of the fixing brackets 105 is at least two. The driving power source 108 transfers heat to the casing 101 by heat transfer, and dissipates heat by heat exchange between the casing 101 and the air. Preferably, the top wall of the casing 101 is provided with a plurality of venting holes 110. Since the top of the power supply box 10 has a venting opening 110 and the bottom is open, the heat generated by the driving power source 108 can be convected out of the casing 101 to prevent heat from accumulating in the casing. In 101, the temperature of the air inside the casing 101 is further lowered, so that the driving power source 108 and the inside of the casing 101 can also exchange heat with the internal air, and the heat dissipation area is doubled to improve the heat dissipation efficiency.

A ventilating plate 106 is respectively disposed on opposite sides of the bottom of the casing 101. The venting plate 106 has a plurality of through holes, the edges of which are connected to the bottom edge of the casing 101 by screws, and the venting plate 106 covers the bottom of the casing 101. Half of the area, the ventilating plate 106 can prevent the finger from contacting the inside of the casing 101 when it touches the bottom of the power box 10, thereby causing hidden dangers to personal safety (such as burns or electric shock), ensuring safe use, and the through hole ensures air circulation. Improve the aesthetic appearance.

Two terminal blocks 107 are screwed to the inner side of the top wall of the casing 101 and are located on both sides of the driving power source 108. The driving power source 108 is respectively connected to the two terminal blocks 107, and one of the terminal blocks 107 and the driving The input end of the power source 108 is connected, and the top wall of the casing 101 is provided with a fixed card line connector 103 for inserting an input power line (not shown), and the input power line can be connected to the terminal block 107 for driving. The power supply 108 is powered; the other terminal block 107 is connected to the output of the drive power source 108, and the heat dissipation fan 307 and the light source 401 are connected to the terminal block 107 to obtain power.

8 to 10 are a perspective view, a plan view, and a cross-sectional view of the heat sink 20. The heat sink 20 is preferably integrally formed by the heat transfer tube 203, the fastening ring 202, and the plurality of heat dissipating blades 201, and the integrally formed structure ensures each The parts are completely connected to ensure heat transfer efficiency. The diameter of the heat sink 20 (i.e., the diameter of the heat transfer cylinder 203 and the width of the two heat radiating fins 201) is at least larger than the width of the casing 101. The heat transfer cylinder 203 is cylindrical, and has an internal thread 204 on the inner side. Compared with the prior art, the heat transfer cylinder 203 has a cylindrical shape instead of a solid cylinder and has a diameter that is at least doubled, without increasing the weight. More heat sink blades 201 are connected. The shape of the heat dissipating blade 201 is preferably a rectangular sheet shape having a side length greater than a height of the heat transfer tube 203, and a lower side of each of the heat dissipating blades 201 is fixedly connected to the outer peripheral surface of the heat transfer tube 203 and is parallel to The axis of the heat transfer cylinder 203 (ie, arranged along the busbar of the outer peripheral surface of the heat transfer cylinder 203), the bottom of the heat radiating blade 201 is flush with the bottom of the heat transfer cylinder 203. The heat dissipating fins 201 are perpendicular to the outer peripheral surface of the heat transfer cylinder 203 (ie, the heat dissipating fins 201 are perpendicular to a tangent to a point of connection with the outer peripheral surface of the heat transfer cylinder 203), so that the heat dissipating fins 201 are centered on the axis of the heat transfer cylinder 203 The radial direction is uniformly distributed radially on the outer circumferential surface of the heat transfer cylinder 203. The fastening ring 202 is annular and has a diameter that coincides with the heat transfer cylinder 203. The fastening ring 202 is fixedly coupled to the side top of the heat dissipation blade 201. Except for the portion connected to the fastening ring 202 and the heat transfer cylinder 203, the side edges of the adjacent heat radiating fins 201 are separated from each other with a gap. In this way, the top and bottom portions of the heat dissipating fins 201 are fixed to ensure the structural strength of the heat sink; the sides of the heat dissipating fins 201 are not completely connected to the heat transfer cylinder 203, leaving adjacent sides of the adjacent heat dissipating fins 201 The gap helps the air to circulate, removes heat between the heat dissipating blades 201 in time, prevents heat from accumulating between the heat dissipating blades 201, improves heat dissipation efficiency, reduces heat sink weight, improves safety factor, and reduces cost.

In this embodiment, the number of the heat dissipating blades 201 is preferably 56 and uniformly distributed on the outer peripheral surface of the heat transfer cylinder 203, and the heat dissipating blades 201 on the outer peripheral surface of the heat transfer cylinder 203 at an angle of 45° are disposed from the top thereof. To the bottom, the second screw hole 205 parallel to the axis of the heat transfer tube (ie, a total of 8 second screw holes 205), the distance between the second screw hole 205 and the axis of the heat transfer tube 203 and the adjacent second screw hole 205 The spacing between the two is uniform (the second screw holes 205 are arranged in a square shape centering on the axis of the heat transfer cylinder 203), and the spacing between the second screw holes 205 is also on the same side edge as the bottom of the casing 101. The spacing between the screw holes 109 is uniform, and the second screw holes 205 on any opposite sides are in one-to-one correspondence with the first screw holes 109, thereby improving the convenience of installation. As shown in FIG. 8 to FIG. 9 , the second screw hole 205 has a C-shaped cross section, and the top end and the bottom end thereof are internally threaded. Referring to FIG. 1 to FIG. 5 , the first screw hole 109 of the casing 101 . The top end of the second screw hole 205 of the heat sink 20 is screwed.

13 and FIG. 14 are a perspective view and a front view of a light source module carrier 30. The light source module carrier 30 is mainly formed by integrally forming a main body 308, a bottom plate 305, a convex portion 303, and a rib 302. The body 308 is a cylindrical shape having a diameter and a height adapted to the heat transfer cylinder 203, and an outer peripheral surface thereof is provided with an external thread 304 that cooperates with the internal thread 204. The bottom plate 305 is in the shape of a disk having a diameter larger than the diameter of the main body 308. The bottom plate 305 is disposed at the bottom of the main body 308 and coaxially therewith, and 12 air convection holes are uniformly distributed along the edge of the bottom plate 305. 306 and 4 threaded holes 310 provided with internal threads, the central angle between the threaded holes 310 is 90° (centered on the axis of the bottom plate 305), and three air convection holes are provided between the adjacent threaded holes 310 306. The main body 308 of the light source module carrier 30 is screwed to the internal thread 204 of the heat transfer cylinder 203 by an external thread 304. As shown in FIG. 5, the light source 401 is screwed to the bottom of the light source module carrier 30. The light source 401 is connected to the terminal block 107 connected to the output end of the driving power source 108 by wires, and the wires can pass between the heat dissipating blades 201. (not shown in the figure). A PC cover (PC is polycarbonate) 402 covers the light source 401, and a through hole corresponding to the screw hole 310 is formed at an edge thereof, and a through hole thereof is screwed to the screw hole 310. The lampshade 403 is centrally opened and can pass through the PC cover 402. The edge of the hole is screwed to the bottom of the four second screw holes 205 that are closer to the axis of the heat transfer cylinder 203.

Since the light source 401 generates a large amount of heat, it is a main source of heat. In addition to heat exchange with the air, heat is mainly dissipated through the heat dissipation structure, that is, heat is transferred to the light source module carrier 30 and the heat sink 20 for heat dissipation, and thus the light source module carrier 30 The heat transfer efficiency of the heat sink 20 is particularly important, and the contact area of the light source module carrier 30 with the heat sink 20 determines its heat transfer efficiency. On one hand, the main body 308 of the light source module carrier 30 is screwed to the heat transfer cylinder 203 of the heat sink 20, and the contact area of the thread surface of the same connection length is about twice that of the planar contact, and the heat transfer efficiency is doubled; As shown in FIG. 5, the top of the bottom plate 305 of the light source module carrier 30 is connected to the bottom of the heat dissipation blade 201, so that the heat generated by the light source 401 is transmitted to the heat dissipation blade 201 through the bottom plate 305, as shown in FIG. A groove 309 is disposed along the outer peripheral surface of the main body 308 and the bottom plate 305. The diameter of the groove 309 is smaller than the diameter of the external thread 304, and the main body 308 can be completely connected in the heat transfer cylinder 203 without hindrance, so that the bottom plate 305 and The heat dissipating blades 201 are completely in contact to ensure heat transfer efficiency.

The convection heat dissipation process of the heat dissipation structure is as follows: the light source 401 transfers heat to the light source module carrier 30, and the light source module carrier 30 transmits heat to the heat dissipation blade 201 and the heat transfer cylinder 203 of the heat sink 20 through the bottom plate 305 and the main body 308, respectively. Through the heat exchange between the convex portion 303 at the top of the main body 308 and the rib 302, the temperature of the air around the heat transfer cylinder 203 and the heat dissipating blade 201 rises, and the volume becomes larger as the air is heated, and the density decreases, and the hot air follows the heat dissipating blade 201. The air is raised and heat-dissipated with the heat dissipating blades 201 to dissipate heat; preferably, the casing 101 is provided with a venting hole 110, and the hot air rises to the power supply box 10 at the top of the heat sink 20 through the venting hole 110 on the top wall of the casing 101. Discharge; due to the gap between the side edges of the adjacent heat dissipating blades 201, the hot air can be laterally carried out of the heat sink 20 when the outside wind passes, reducing the accumulation of heat between the heat dissipating fins 201. The top of the main body 308 is provided with a convex portion 303 which is convex around the axial center and extends to the top edge of the main body 308. The convex portion 303 is an approximately circular truncated cone shaped like a concave arc which is recessed toward the main body 308 or Conical. The convex portion 303 is provided with a plurality of vertical ribs 302, and the ribs 302 are radially evenly distributed around the axis of the main body 308.

Referring to FIG. 11 and FIG. 12, the convex portion 303 is provided with three vertical mounting posts 301. The mounting posts 301 are evenly distributed around the axis of the main body 308, and the cooling fan 307 is fixed to the mounting. On the column 301, the heat radiating fan 307 is connected to the terminal block 107 connected to the output end of the driving power source 108 via an electric wire (not shown in the electric wire diagram), and the cooling fan 307 can blow air to the convex portion 303 when it is activated.

The convex portion 303 and the rib 302 serve on the one hand to increase the heat dissipation area of the top of the main body 308, and on the other hand to guide the wind direction. As shown in FIGS. 5, 11 and 12, the convex portion 303 and the bottom of the rib 302 are provided. The edge is at the top of the heat transfer cylinder 203, and the bus bar of the convex portion 303 is a concave arc type, which conforms to the aerodynamic principle, can reduce the loss of wind force when guiding the wind direction, and ensures the wind power, thereby ensuring heat dissipation efficiency. The ribs 302 are of a straight plate type and have the same direction as the heat dissipating blades 201, that is, they are radially distributed with the center of the heat transfer cylinder 203 as a center, and can directly guide the wind to the heat dissipating blades 201, thereby further avoiding interference and loss.

The convection heat dissipation process of the heat dissipation structure when the heat dissipation fan 307 is activated is as follows: the heat dissipation fan 307 supplies air to the convex portion 303, and the generated wind flows from the top edge of the main body 308 to the horizontally outward side through the guiding of the convex portion 303 and the rib 302, and A negative pressure is generated above the bottom plate 305. Since the edge of the bottom plate 305 is provided with an air convection hole 306 leading to the light source 401 and the lamp cover 403, the generated negative pressure can suck the air between the light source 401 and the lamp cover 403 through the air convection hole 306. The bottom plate 305 is arranged above and away to prevent the light source 401 from continuously heating the air around it and cannot be discharged, thereby affecting its life and efficiency; the heat dissipation fan 307 generates a negative pressure on the other side of the convex portion 303, and the negative pressure suction is located at the adjacent heat dissipation blade 201. Between the air between the heat dissipation fan 307 and the power supply box 10, that is, above the heat dissipation fan 307, the air between the heat dissipation blades 201 flows toward the center due to the negative pressure generated by the heat dissipation fan 307, and the heat dissipation fan 307 or less dissipates heat. The air between the blades 201 is discharged to the outside by the wind generated by the heat radiating fan 307, so that convection is formed between the heat radiating blades 201, and the efficiency of heat exchange with the air is accelerated, and the efficiency is lowered. Efficiency of heat radiation fins 201 temperature. Preferably, the casing 101 is provided with a venting hole 110. When the cooling fan 307 is activated, the negative pressure is formed to suck air from the vent hole 110 of the casing 101, so that the air enters the radiator 20 along the bottom edge of the casing 101 and the vent hole 110. The temperature of the power supply box 10 is further lowered.

Claims

A heat dissipation structure is characterized in that it comprises a heat sink (20) and a light source module carrier (30); the heat sink (20) comprises a heat transfer tube (203), a fastening ring (202) and a plurality of heat dissipation a blade (201), the heat transfer cylinder (203) is provided with an internal thread (204), and a side length of the heat dissipation blade (201) is greater than a height of the heat transfer cylinder (203), and each heat dissipation blade (201) The lower side of the side is fixedly coupled to the outer peripheral surface of the heat transfer cylinder (203) and parallel to the axis of the heat transfer cylinder (203), the fastening ring (202) being annular and having a diameter and the heat transfer The cylinder (203) is identical, and the fastening ring (202) is fixedly connected to the side top of the heat dissipating blade (201) except for the portion connected to the fastening ring (202) and the heat transfer cylinder (203). The side edges of the heat dissipating blades (201) are separated from each other with a gap;

The light source module carrier (30) includes a main body (308), a bottom plate (305), a convex portion (303) and a rib plate (302), and the main body (308) has a diameter and a height and the heat transfer tube (203). An adapted cylindrical shape, the outer peripheral surface of which is provided with an external thread (304) that cooperates with the internal thread (204), and the top of the main body (308) is provided with a protrusion centered on its axis and extends to the main body ( 308) a convex portion (303) of the top edge, the convex portion (303) is provided with a plurality of vertical ribs (302), the bottom plate (305) being disc-shaped and having a diameter larger than the main body ( a diameter of 308), a bottom plate (305) is disposed at a bottom portion of the main body (308) and coaxially therewith, and a plurality of upper and lower air convection holes (306) are uniformly distributed along an edge of the bottom plate (305), the light source mode The body (308) of the set carrier (30) is threadedly coupled to the internal threads (204) of the heat transfer cartridge (203) by external threads (304).
A heat dissipation structure according to claim 1, wherein a plurality of said heat dissipating blades (201) are provided with a second screw hole (205 extending from the top to the bottom thereof parallel to the axis of the heat transfer cylinder (203). The top end and the bottom end of the second screw hole (205) are respectively provided with internal threads.
The heat dissipating structure according to claim 2, wherein the heat dissipating fins (201) of the outer peripheral surface of the heat transfer cylinder (203) are provided with the second screw holes (205) at intervals of 45° central angle. The distance from the second screw hole (205) to the axis of the heat transfer cylinder (203) coincides with the distance between the adjacent second screw holes (205).
A heat dissipation structure according to claim 1, wherein the heat dissipating blade (201) has a rectangular sheet shape.
A heat dissipation structure according to claim 4, wherein the bottom of the heat dissipating blade (201) is flush with the bottom of the heat transfer cylinder (203).
A heat dissipation structure according to claim 5, wherein said heat dissipating fins (201) are perpendicular to an outer peripheral surface of said heat transfer cylinder (203).
A heat dissipation structure according to claim 6, wherein a groove (309) is provided along the outer peripheral surface of the main body (308) and the bottom plate (305), and the diameter of the groove (309) is smaller than the external thread. The diameter of (304).
The heat dissipating structure according to claim 7, wherein the convex portion (303) is an approximately circular truncated cone or a conical shape in which the bus bar is recessed toward the main body (308).
A heat dissipation structure according to claim 8, wherein said ribs (302) are radially evenly distributed around the axis of the body (308).
The high bay light according to claim 2, wherein the second screw hole (205) has a C-shaped cross section.
The heat dissipation structure according to any one of claims 1 to 10, characterized in that the convex portion (303) is provided with a plurality of vertical mounting posts (301), and can be convex toward the convex portion (303) when activated. A cooling fan (307) for supplying air is fixed to the mounting post (301).
A high bay light comprising a power box (10) with a driving power source (108), a heat dissipation structure and a light source (401), characterized in that

The heat dissipation structure is composed of a heat sink (20) and a light source module carrier (30), and the heat sink (20) includes a heat transfer tube (203), a fastening ring (202), and a plurality of heat dissipation blades (201). The heat transfer cylinder (203) is provided with internal threads (204), the side length of the heat dissipating blades (201) is greater than the height of the heat transfer tubes (203), and the lower side of each of the heat dissipating blades (201) Fixedly connected to an outer peripheral surface of the heat transfer cylinder (203) and parallel to an axis of the heat transfer cylinder (203), the fastening ring (202) is annular and has a diameter consistent with the heat transfer cylinder (203) The fastening ring (202) is fixedly coupled to a side top of the heat dissipating blade (201), except for a portion connected to the fastening ring (202) and the heat transfer cylinder (203), the adjacent heat dissipating blade The sides of (201) are separated from each other with a gap, and the top of the heat sink (20) is fixedly connected to the bottom of the power supply box (10);

The light source module carrier (30) includes a main body (308), a bottom plate (305), a convex portion (303) and a rib plate (302), and the main body (308) has a diameter and a height and the heat transfer tube (203). An adapted cylindrical shape, the outer peripheral surface of which is provided with an external thread (304) that cooperates with the internal thread (204), and the top of the main body (308) is provided with a protrusion centered on its axis and extends to the main body ( 308) a convex portion (303) of the top edge, the convex portion (303) is provided with a plurality of vertical ribs (302), the bottom plate (305) being disc-shaped and having a diameter larger than the main body ( a diameter of 308), a bottom plate (305) is disposed at a bottom portion of the main body (308) and coaxially therewith, and a plurality of upper and lower air convection holes (306) are evenly distributed along the edge of the bottom plate (305) and internally threaded a threaded hole (310), the body (308) of the light source module carrier (30) is threadedly connected to the internal thread (204) of the heat transfer cylinder (203) by an external thread (304);

The light source (401) is fixedly connected to the bottom of the light source module carrier (30), and the light source (401) is connected to the driving power source (108) through a wire.
A high bay light according to claim 12, wherein a groove (309) is provided along the outer peripheral surface of the main body (308) and the bottom plate (305), and the diameter of the groove (309) is smaller than the outer diameter. The diameter of the thread (304).
A high-bay lamp according to claim 13, characterized in that the convex portion (303) is an approximately circular truncated cone or a conical shape in which the bus bar is recessed toward the main body (308).
A high bay light according to claim 14, wherein said ribs (302) are radially evenly distributed about the axis of the body (308).
A high bay light according to claim 12, wherein said heat dissipating fins (201) are in the shape of a rectangular sheet.
A high bay light according to claim 16, wherein the bottom of the heat dissipating vane (201) is flush with the bottom of the heat transfer cylinder (203).
A high bay light according to claim 17, wherein said heat dissipating fins (201) are perpendicular to an outer peripheral surface of said heat transfer cylinder (203).
The high bay light according to any one of claims 12 to 18, wherein the convex portion (303) is provided with a plurality of vertical mounting posts (301), and can be convex toward the starting portion ( 303) A cooling fan (307) for supplying air is fixed to the mounting post (301), and the cooling fan (307) is connected to the driving power source (108) through a wire.
A high bay light according to claim 19, characterized in that the number of the mounting posts (301) is three and is evenly distributed around the axis of the body (308).
A high bay light according to claim 19, wherein a plurality of said heat dissipating blades (201) are provided with a second screw hole (205) extending from a top portion thereof to a bottom portion parallel to the axis of the heat transfer cylinder, The top end and the bottom end of the second screw hole (205) are respectively provided with internal threads.
A high bay light according to claim 21, wherein said second screw hole (205) has a C-shaped cross section.
A high-bay lamp according to claim 22, wherein said heat-dissipating cylinder (203) has said second screw hole (205) on a heat-dissipating blade (201) at an angle of 45° of a central angle. The distance between the second screw hole (205) and the axis of the heat transfer cylinder (203) coincides with the distance between the adjacent second screw holes (205).
A high bay light according to claim 21, wherein said power supply box (10) comprises a casing (101), a driving power source (108) fixed to an inner side of a top wall of said casing (101), and Two terminal blocks (107), the box body (101) is composed of a top wall and a side wall integrally formed along the edge of the top wall, the bottom of the box body (101) is open, and the opposite sides of the bottom of the box body (101) respectively a first screw hole (109) corresponding to the second screw hole (205) is provided, and the top end of the first screw hole (109) and the second screw hole (205) are screwed, the driving power source ( The input terminal and the output terminal of 108) are respectively connected to the two terminal blocks (107), and one of the terminal blocks (107) connected to the output end of the driving power source (108) passes through the electric wire and the cooling fan ( 307) is connected to the light source (401), and the top of the box body (101) is provided with a fixed card wire connector (103) for inserting an input power line.
A high bay light according to claim 24, wherein both ends of the U-shaped power fixing bracket (105) are connected to the inside of the top wall of the casing (101) on both sides of the driving power source (108), The central portion presses the driving power source (108) against the inside of the top wall of the casing (101).
A high bay light according to claim 25, wherein the number of the power fixing brackets (105) is at least two, and both ends of the power fixing bracket (105) are screwed to the inner side of the top wall of the casing (101). connection.
A high bay light according to claim 26, characterized in that a lifting ring (102) is arranged in the center of the top of the casing (101).
A high-bay lamp according to claim 27, wherein a venting plate (106) is respectively disposed at opposite ends of the bottom of the casing (101), and the venting plate (106) is provided with a plurality of through holes. The edge is connected to the bottom edge of the casing (101) by screws.
A high bay light according to claim 28, wherein the top wall of the casing (101) is provided with a plurality of venting holes (110).
A high bay light according to claim 29, wherein said venting panel (106) covers less than half of the area of the bottom of the casing (101).
A high bay light according to claim 30, wherein said terminal block (107) is screwed to the inner side of said top wall of said casing (101).
A high bay light according to claim 21, further comprising a PC cover (402) and a light cover (403), said PC cover (402) covering said light source (401) with an edge open The threaded hole (310) is screwed; the lamp cover (403) is centrally opened and can pass through the PC cover (402), and the edge of the hole is screwed to the bottom end of the second screw hole (205).