CN209146851U - A kind of Projecting Lamp - Google Patents

Abstract

The utility model relates to the technical field of lighting, in particular to a floodlight. It includes a floodlight main body provided with a heat dissipation device; the heat dissipation device includes an annular fin array; the fin array includes a plurality of heat dissipation fins arranged along the center of the annular shape to the edge; the adjacent heat dissipation fins A channel for heat dissipation is formed between the fins, the channel includes a first vent near the center of the ring and a second vent near the edge of the ring, and the width of the channel near the center of the ring is smaller than the width of the channel near the center of the ring The width of the annular edge side. In the above technical solution, the channels formed between the adjacent heat dissipation fins facilitate heat dissipation by air convection, thereby improving the heat dissipation effect. The heat dissipation fins are distributed in an annular shape, and the corresponding channels formed between adjacent fins are also distributed in an annular shape, which can ensure that no matter how the wind direction changes, there will be a stable convection channel for heat dissipation.

Description

a flood light

technical field

The utility model relates to the technical field of lighting, in particular to a floodlight.

Background technique

LED floodlights make the illuminance of the designated illuminated surface higher than that of the surrounding environment, also known as spotlights. In general, it is capable of aiming in any direction and has a structure that is not affected by climatic conditions. It is mainly used for large-area operation fields, mines, building outlines, stadiums, overpasses, monuments, parks and flower beds, etc. It is an outdoor lighting fixture.

With the advantages of high luminous efficiency, low power consumption, no high voltage, and high safety, LED lamps have been widely used in various lighting fields. In high-power LEDs, heat dissipation is a big problem. If the heat dissipation is not good, it will directly lead to the rapid aging of the LED, and the stability will be reduced. At the same time, the poor heat dissipation will cause serious light decay and affect the life of the lamp.

For example, the utility model patent with the authorization announcement number CN202719392U on February 6, 2013 discloses a lamp body in a lamp angle adjustment device. Traditional outdoor lamps usually use in-line heat sinks for passive heat dissipation. Passive heat dissipation is mainly through air convection to dissipate heat. However, the direction of outdoor air flow is uncertain and changes all the time, and the installation state of the lamp is not unique. When the wind direction is perpendicular to the heat sink, the heat sink There is almost no air convection channel, which is not conducive to the heat dissipation of the lamps.

The authorization announcement number CN207162347U, the utility model patent with the authorization announcement date of March 30, 2018, discloses an LED floodlight with a heat dissipation function. The heat is exhausted through the exhaust fan to avoid damage to the lamp body due to overheating. This active cooling method has high cost, complex structure and waste of energy.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present application proposes a floodlight, which is characterized by comprising a floodlight main body provided with a heat dissipation device;

The heat dissipation device includes an annular fin array;

the fin array includes a plurality of heat dissipation fins disposed along the center to the edge of the ring;

A channel for heat dissipation is formed between the adjacent heat dissipation fins, the channel includes a first vent near the annular center and a second vent near the annular edge, and the channel is close to the annular center The width of the side is smaller than the width of the side adjacent to the annular edge.

In the above technical solution, the channels formed between the adjacent heat dissipation fins facilitate heat dissipation by air convection, thereby improving the heat dissipation effect. The cooling fins are annularly distributed, and the corresponding channels formed between adjacent fins are also annularly distributed, which ensures that no matter how the wind direction changes, there will be a stable convection channel for heat dissipation.

Preferably, the heat dissipation fins are curved fins bent toward one side, and all the heat dissipation fins of the fin array are bent in the same direction.

Preferably, the main body of the floodlight further includes a light source plate assembly; the heat dissipation device includes a plate body provided with a mounting portion and the fin array; the mounting portion is provided on the front of the plate body, and is used for connecting with the plate body. The backside of the light source board assembly is connected; the fin array is arranged on the backside of the board body.

Preferably, a heat conducting portion is provided between the front surface of the board body and the back surface of the light source board assembly.

Preferably, the heat dissipation device further includes a wiring cavity concave in the center of the ring.

Preferably, a U-shaped mounting bracket is also included; the two arms of the mounting bracket are rotatably connected to two sides of the light projection body respectively; the part between the two arms of the mounting bracket is provided with a mounting structure.

Preferably, two arms of the mounting bracket are provided with chucks, and two sides of the plate body are provided with adjustment disks, and the chucks are rotatably connected with the adjustment disks.

Preferably, the chuck is provided with an annular first adjusting tooth array, the adjusting disc is provided with an annular second adjusting tooth array, and the first adjusting tooth and the second adjusting tooth are matched with each other so that the chuck The disc and the adjusting disc can rotate relatively in units of the first adjusting tooth or the second adjusting tooth.

Preferably, an adjustment scale is provided on the surface of the chuck opposite to the first adjustment tooth array.

Preferably, the heat dissipation device is formed by die casting of aluminum alloy material.

The utility model has the following beneficial effects:

1. The channels formed between the adjacent radiating fins are convenient for heat dissipation through air convection. The radiating fins are arc-shaped fins, which make the radiator have a larger heat dissipation area. The channels between adjacent fins are also annularly distributed, which ensures that no matter how the wind direction changes, there will be a stable convection channel for heat dissipation, which improves the heat dissipation effect.

2. The heat sink adopts the aluminum alloy die-casting molding process, which makes the product production process simpler.

3. The design of the wiring cavity makes it more convenient to only open the cover of the wiring cavity when the floodlight is wired or maintained.

4. The volume of the floodlight is smaller and thinner, which reduces the windward area of the floodlight in the high-altitude state, making it more difficult to fall from high altitude and safer.

5. The mounting bracket is rotatably connected to the main body of the projection light, which is convenient to adjust the lighting area of the projection light.

6. The mounting bracket and the light projection body can rotate relative to the first adjustment tooth or the second adjustment tooth, and the adjustment scale set on the surface of the chuck is convenient to accurately adjust the projection angle of the projection light and lock the set projection angle. , when there are multiple floodlights, it is convenient to maintain the same height of the projection angles of the multiple floodlights.

Description of drawings

Fig. 1 is a three-dimensional structural diagram of a floodlight of the present invention.

FIG. 2 is a three-dimensional structural diagram of the floodlight of the present invention.

3 is a schematic diagram of the assembly of the floodlight of the present invention.

FIG. 4 is a schematic diagram of the heat dissipation of the radiator of the present invention.

Detailed ways

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that commonly used terms should be interpreted to have meanings consistent with their meanings in the relevant art and this disclosure. This disclosure is to be considered as an example of the invention, and is not intended to limit the invention to the particular embodiments.

Example 1

Figures 1-2 are respectively a front perspective view and a rear perspective view of the floodlight of this embodiment. The floodlight of this embodiment includes a floodlight main body 1 and a mounting bracket 2 . The floodlight main body 1 includes a light source board assembly 11 and a heat sink 12 mounted on the back of the light source board assembly 11 . The light source board assembly 11 includes an aluminum substrate, and a plurality of LED lamps mounted on the aluminum substrate. As shown in FIG. 3 , a face frame 3 is installed around the light source board assembly 11 , a glass panel 31 is embedded in the face frame 3 , and a sealing ring 32 is further provided between the glass panel and the face frame 3 . The heat dissipation device 12 is installed on the back of the light source board assembly 11 to dissipate the heat generated by the LED lamps in the light source board assembly. The heat dissipation device includes a plate body 121 and an annular fin array. The board body 121 is provided with a concave groove-like structure to be assembled with the light source board assembly 11 and connected by bolts. The fin array includes a plurality of heat dissipation fins 1211 disposed along the center of the ring to the edge, and channels 1212 for heat dissipation are formed between adjacent heat dissipation fins 1211 . The plate body and the fin array in this embodiment are made of aluminum or aluminum alloy materials, which are light in weight and have good thermal conductivity, and are formed by a die-casting process, which makes the product production process simpler. The heat dissipation fins 1211 are curved fins bent toward one side, and all the heat dissipation fins 1211 in the fin array have the same bending direction. For example, all the heat dissipation fins 1211 in the fin array may be bent in a clockwise direction, or may be bent in a counterclockwise direction. The channel 1212 includes a first vent 12121 near the center of the ring and a second vent 12122 near the edge of the ring, and the width of the channel 1212 near the center of the ring is smaller than its width near the edge of the ring. The width of the channel near the edge of the ring is larger, which facilitates the introduction of external air into the channel; in the process of air flowing along the channel, due to the gradually narrowing channel width, the air flows faster, and the heat can be quickly taken away; the heat near the center of the ring At most, the channel width of the channel at this position is also the smallest, and the corresponding air velocity at this position is the largest, which can quickly take away heat. In this embodiment, the annular array formed by the heat dissipation fins 1211 is based on the Fibonacci golden spiral curve on the back of the heat dissipation device, so that the width of each channel 1212 gradually widens from the annular center to the annular edge, forming a plurality of annular The air convection channel distributed from the center to the annular edge can dissipate heat through air convection, which can ensure that the flood light is always changing and the direction of air flow is uncertain, ensuring that there is always a channel in the direction that does not match the direction of outdoor lighting. The direction of air flow is vertical, so as to ensure that the air flow of the heat sink quickly removes the heat (as shown in Figure 4).

There is a concave wiring cavity 122 at the center of the annular fin array. The wires such as the power cord of the light source board assembly pass through the wiring cavity 122. The outdoor light only needs to open the cover of the wiring cavity 2 during wiring and maintenance. There is no need to disassemble the entire heat sink from the main body of the floodlight, making wiring and maintenance more convenient. The wiring cavity 122 is concavely disposed at the center of the fin array, which will not block the air circulation of each channel, which is more conducive to heat dissipation. . Between the front surface of the board body 121 (that is, the side without the fin array) and the back surface of the light source board assembly 11, a heat conduction part 13 is provided, such as a graphite heat conduction pad or a silicone pad, or a heat conduction part 13 filled between the board body and the light source board assembly. Thermal paste. The heat generated by the LED lamps on the light source board assembly 11 can be conducted to the board body 121 through the heat conduction part 13 and rapidly dissipated by the heat dissipation fins 1211 . Preferably, the height of the heat dissipation fins provided on the plate body 1 in this embodiment is about 50-65 mm, so that the height of the channels formed between adjacent heat dissipation fins is about 50-65 mm. Preferably, in this embodiment, the ratio of the minimum width of the channel (ie the width of the first vent near the center of the ring) to the height of the channel (ie the height of the heat dissipation fins) is 6.5-9.

The mounting bracket 2 has a U-shaped structure, the two arms 21 of the mounting bracket are provided with a chuck 211 , and the inner surface of the chuck is provided with an annular second array of adjusting teeth. The part between the two arms 21 of the mounting bracket is provided with mounting screw holes 22, which can be used to fix the floodlight at the position to be installed by screws, or the electrical box of the floodlight can be fixed at the position by screws. Adjusting disks 1213 are provided on both sides of the plate body 121 of the heat sink 12 , and an annular first adjusting tooth array is provided on the outer surface of the adjusting disk 1213 . The chuck 211 and the adjusting plate 1213 are connected and rotatably connected by the decorative nut 3. The first adjusting teeth of the first adjusting tooth array are matched with the second adjusting teeth of the second adjusting tooth array. The adjustment teeth or the second adjustment teeth are rotated relative to each other, so that the main body of the floodlight where the adjustment disc is located can rotate relative to the mounting bracket where the chuck is located in units of the first segment teeth or the second adjustment teeth (the adjustment accuracy of this embodiment can be improved. Accurate to 2.5°) to achieve precise adjustment of the projection angle of the flood light. In this embodiment, the surface of the chuck 211 opposite to the first adjusting tooth array is further provided with an adjustment scale, which is more convenient to obtain the projection angle of the projection light. The weight of the main body of the flood light is generally heavier, and the relative position between the mounting bracket and the main body of the flood light is locked by the second adjusting tooth of the chuck and the first adjusting tooth of the adjusting disc, so that the main body of the flood light will not be long. Falling down under the gravity of time, the flood light loses its original projection angle.

The heat dissipation device of the floodlight of the utility model is installed on the back side thereof, and a curved surface structure that takes into account both visual aesthetics and good heat dissipation performance can be obtained. It not only makes the appearance of the floodlight more visually appealing, but also reflects the aesthetic design purpose of "the beauty of design comes from nature and is loyal to nature". Under the same space conditions, the heat dissipation surface area can be increased by 5%-10% compared with the straight heat sink. The curved heat sink design makes the hot air convection channel smoother and improves the heat dissipation of the product. The mounting bracket is rotatably connected with the main body of the projection light, which is convenient for adjusting the illumination area of the projection light. The mounting bracket and the light projecting body can rotate relative to the first adjusting tooth or the second adjusting tooth, and the adjustment scale set on the surface of the chuck is convenient to accurately adjust the light projection angle of the flood light, which is convenient when there are multiple flood lights. Keep the heights of the projection angles of multiple spotlights the same.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by those of ordinary skill in the art within the scope of the appended claims.

Claims (10)

1. A floodlight, characterized in that it comprises a floodlight main body provided with a heat sink; The heat dissipation device includes an annular fin array; the fin array includes a plurality of heat dissipation fins disposed along the center to the edge of the ring; A channel for heat dissipation is formed between the adjacent heat dissipation fins, the channel includes a first vent near the annular center and a second vent near the annular edge, and the channel is close to the annular center The width of the side is smaller than the width of the side adjacent to the annular edge. 2. A kind of floodlight according to claim 1, is characterized in that: The heat dissipation fins are curved fins bent toward one side, and all the heat dissipation fins of the fin array are bent in the same direction. 3. A kind of floodlight according to claim 1, is characterized in that: The main body of the floodlight also includes a light source board assembly; The heat dissipation device includes a plate body provided with a mounting portion and the fin array; the mounting part is arranged on the front side of the board body, and is used for connecting with the back side of the light source board assembly; The fin array is arranged on the back of the plate body. 4. A kind of floodlight according to claim 3, is characterized in that: A heat-conducting portion is provided between the front surface of the board body and the back surface of the light source board assembly. 5. A kind of floodlight according to claim 1, is characterized in that: The heat sink also includes a wiring cavity recessed in the center of the ring. 6. A kind of floodlight according to claim 3, is characterized in that: Also includes a U-shaped mounting bracket; The two arms of the mounting bracket are rotatably connected to the two sides of the light projection body respectively; The part between the two arms of the mounting bracket is provided with a mounting structure. 7. A kind of floodlight according to claim 6, is characterized in that: The two arms of the mounting bracket are provided with chucks, the two sides of the plate body are provided with adjustment disks, and the chucks are rotatably connected with the adjustment disks. 8. A floodlight according to claim 7, characterized in that: The chuck is provided with an annular first adjusting tooth array, the adjusting disc is provided with an annular second adjusting tooth array, and the first adjusting tooth and the second adjusting tooth are matched with each other so that the chuck and the The adjusting disc can rotate relatively in units of the first adjusting tooth or the second adjusting tooth. 9. A kind of floodlight according to claim 8, is characterized in that: An adjustment scale is provided on the surface of the chuck opposite to the first adjustment tooth array. 10. A floodlight according to claim 1, characterized in that: The heat sink is made of aluminum alloy die-casting.