Radiating and dustproof projection lamp

Abstract

The utility model relates to the technical field of project lamps, in particular to a radiating and dustproof project lamp which comprises a passive radiating device, an end cover and a shell. The passive heat dissipation device comprises a heat conductor, the heat conductor is provided with a lamp installation groove, a plurality of heat dissipation fin sets are arranged on the outer surface of the heat conductor, and each heat dissipation fin set comprises two vertical fins, two first inclined fins and two second inclined fins. Airflow channels are arranged among the vertical fins, the first inclined fins and the second inclined fins which are adjacent and between every two second inclined fins, and the first inclined fins are further provided with flow guide ports; the end cover is provided with an air outlet; the outer side of the heat dissipation fin set is surrounded by the shell, and the shell is provided with an air inlet. The air flow speed and flow in the air flow channel between the two first inclined fins are further increased, the heat convection efficiency is enhanced, the air flow kinetic energy is increased to prevent dust, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of floodlights, in particular to a heat dissipation and dustproof floodlight. Background Art

[0002] In garden landscapes, floodlights are generally set at low places to illuminate high places such as tree crowns, adding color to the night scene. When floodlights are used, a lot of heat is generated. At present, the heat dissipation methods generally adopt active heat dissipation and passive heat dissipation. Active heat dissipation refers to the forced removal of heat through heat dissipation equipment such as fans and heat pipes. Passive heat dissipation refers to the use of heat dissipation fins to export the heat of the lamp and then dissipate it through heat convection or heat radiation. Compared with active heat dissipation, the efficiency is lower, and after long-term use, the heat dissipation fins will accumulate a lot of dust, further reducing the heat dissipation efficiency, but due to its cost advantage, it has also been widely used. For example, the heat dissipation structure disclosed in CN206786668U and CN103939868B adds an air circulation channel on the basis of the passive heat dissipation structure to promote air flow and thus improve the heat dissipation efficiency, but it does not contribute to how to prevent dust accumulation. Utility Model Content

[0003] In view of the problem that the passive heat dissipation structure in the prior art solution is inefficient and dust accumulation will further reduce the efficiency, the utility model provides a heat dissipation and dustproof floodlight.

[0004] The utility model provides the following technical solution: a heat dissipation and dustproof floodlight, comprising:

[0005] A passive heat dissipation device, the passive heat dissipation device comprises a heat conductor, the heat conductor is provided with a lamp mounting groove, the outer surface of the heat conductor is provided with a plurality of heat dissipation fin groups symmetrical about the center of the lamp mounting groove, the heat dissipation fin group comprises two vertical fins respectively located on both sides, two first inclined fins arranged between the two vertical fins, and two second inclined fins arranged between the two first inclined fins, air flow channels are arranged between the adjacent vertical fins, first inclined fins, second inclined fins and between the two second inclined fins, the two first inclined fins are inclined toward one side close to each other toward one end of the lamp mounting groove opening, the two second inclined fins are inclined toward one side close to each other toward one end of the lamp mounting groove opening, and the height of the second inclined fin is lower than that of the first inclined fin, and the first inclined fin is also provided with a guide port;

[0006] An end cover, the end cover is detachably connected to one side of the lamp installation slot, and the end cover is provided with an air outlet corresponding to the air flow channel between the two first inclined fins;

[0007] The outer shell surrounds the outer side of the heat dissipation fin group, and an air inlet is arranged at one end of the outer shell away from the lamp installation groove.

[0008] Preferably, the slope of the second inclined fin is smaller than that of the first inclined fin.

[0009] Preferably, the heat conductor is further provided with an extension portion extending to a side away from the lamp installation slot, and the extension portion is provided with a wire groove communicating with the lamp installation slot.

[0010] Preferably, the extension portion is provided with a plurality of auxiliary heat dissipation fins extending along the radial direction of the wire slot.

[0011] Preferably, the vertical fins, the first inclined fins, and the second inclined fins are respectively connected to an auxiliary heat dissipation fin.

[0012] Preferably, the housing is connected to the extension portion by bolts, and the housing is also connected to a lamp holder by bolts.

[0013] The beneficial effects of the utility model are: improving the fin form of the passive heat dissipation structure, further accelerating the air flow speed and flow rate in the air flow channel between the two first inclined fins, enhancing the heat convection efficiency, and increasing the air flow kinetic energy to reduce the amount of dust falling into the air flow channel from the air outlet, slowing down the speed at which dust adheres to the fins, and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of an embodiment of the utility model.

[0015] Figure 2 It is a structural explosion diagram of an embodiment of the utility model.

[0016] Figure 3 A schematic diagram of an embodiment of a passive heat dissipation device.

[0017] Figure numerals: 10, passive heat dissipation device; 11, heat conductor; 12, lamp mounting groove; 13, vertical fin; 14, first inclined fin; 141, air guide port; 15, second inclined fin; 16, extension portion; 161, wire trough; 17, auxiliary heat dissipation fin; 20, end cover; 21, air outlet; 30, housing; 31, air inlet; 40, lamp holder. DETAILED DESCRIPTION

[0018] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] The utility model provides Figure 1-3 The heat dissipation and dustproof floodlight shown in the figure comprises a passive heat dissipation device 10 , an end cover 20 , a housing 30 and a lamp holder 40 .

[0020] The passive heat dissipation device 10 is mainly composed of a heat conductor 11 made of copper, aluminum or alloy. A lamp mounting groove 12 for mounting a lamp is provided on one side of the heat conductor 11, and a plurality of heat dissipation fin groups symmetrical about the center of the lamp mounting groove 12 are provided on the outer surface of the heat conductor 11. The heat dissipation fin group and the heat conductor 11 are integrally formed. The heat conductor conducts the heat of the lamp to the heat dissipation fin group, and then dissipates it into the surrounding air. A heat conductive glue is filled between the lamp and the lamp mounting groove 12 to improve the heat conduction efficiency.

[0021] Please refer to Figure 3 In this embodiment, the heat dissipation fin group includes two vertical fins 13 on both sides, two first inclined fins 14 arranged between the two vertical fins 13, and two second inclined fins 15 arranged between the two first inclined fins 14. Airflow channels are arranged between the adjacent vertical fins 13, first inclined fins 14, and second inclined fins 15, and between the two second inclined fins 15. Specifically, the first airflow channel is between the vertical fin 13 and the first inclined fin 14, the second airflow channel is between the two first inclined fins 14, the third airflow channel is between the first inclined fin 14 and the second inclined fin 15, and the fourth airflow channel is between the two second inclined fins 15.

[0022] The outer side of the heat dissipation fin group is surrounded by a shell 30, which plays a certain dust-proof role and closes the side of the air flow channel, and an air inlet 31 is provided at one end of the shell 30 away from the lamp mounting groove 12. After each fin of the heat dissipation fin group heats the surrounding air, the hot air rises and generates negative pressure in the air flow channel to absorb the cold air below to rise, accelerate air flow, and improve heat exchange efficiency.

[0023] In this embodiment, the two first inclined fins 14 are inclined toward one side close to each other at one end of the opening of the lamp mounting groove 12, and the second air flow channel between the two first inclined fins 14 forms a constriction. In garden landscapes, floodlights are generally set at low places to illuminate high places such as tree crowns. The constriction is above the second air flow channel, which further increases the air flow rate, effectively reduces the amount of dust falling into the air flow channel from above, and increases the service life. An end cover 20 can also be detachably connected to one side of the notch of the lamp mounting groove 12. The end cover 20 is provided with an air outlet 21 corresponding to the second air flow channel, and closes other air flow channels to reduce the entry of dust. A light-transmitting groove is also provided in the center of the end cover 20, and its diameter is smaller than the diameter of the lamp mounting groove 12, which serves to limit the lamp.

[0024] Furthermore, the first inclined fin 14 is also provided with a guide port 141; the two second inclined fins 15 are inclined toward each other at one end of the lamp installation slot 12, and the height of the second inclined fin 15 is lower than that of the first inclined fin 14, and another fourth airflow channel with a constriction is formed inside the second airflow channel between the two first inclined fins 14. The air flow rate flowing out of the fourth airflow channel is faster than that on both sides, generating negative pressure, prompting the hot air in the first airflow channel to flow from the guide port 141 into the second airflow channel and the hot air in the third airflow channel to flow out faster, promoting heat convection, and increasing the flow rate of the air outlet. The slope of the second inclined fin 15 can also be smaller than that of the first inclined fin 14 to reduce the width of the constriction of the fourth airflow channel.

[0025] Preferably, the heat conductor 11 is also provided with an extension portion 16 extending to a side away from the lamp mounting groove 12, the extension portion 16 is provided with a wire groove 161 connected to the lamp mounting groove 12, and the extension portion 16 is provided with a plurality of auxiliary heat dissipation fins 17 extending along the radial direction of the wire groove 161 to increase the heat dissipation area; the vertical fins 13, the first inclined fins 14, and the second inclined fins 15 are respectively connected to an auxiliary heat dissipation fin 17, so that multiple air flow channels extend downward and are more coherent.

[0026] Preferably, the housing 30 is bolted to the extension portion 16 , and the housing 30 is also bolted to a lamp holder 40 to connect to a power source.

[0027] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat dissipation and dustproof floodlight, characterized in that: include: A passive heat dissipation device, the passive heat dissipation device comprises a heat conductor, the heat conductor is provided with a lamp mounting groove, the outer surface of the heat conductor is provided with a plurality of heat dissipation fin groups symmetrical about the center of the lamp mounting groove, the heat dissipation fin group comprises two vertical fins respectively located on both sides, two first inclined fins arranged between the two vertical fins, and two second inclined fins arranged between the two first inclined fins, air flow channels are arranged between the adjacent vertical fins, first inclined fins, second inclined fins and between the two second inclined fins, the two first inclined fins are inclined toward one side close to each other toward one end of the lamp mounting groove opening, the two second inclined fins are inclined toward one side close to each other toward one end of the lamp mounting groove opening, and the height of the second inclined fin is lower than that of the first inclined fin, and the first inclined fin is also provided with a guide port; An end cover, the end cover is detachably connected to one side of the lamp installation slot, and the end cover is provided with an air outlet corresponding to the air flow channel between the two first inclined fins; The outer shell surrounds the outer side of the heat dissipation fin group, and an air inlet is arranged at one end of the outer shell away from the lamp installation groove.

2. A heat dissipating and dustproof floodlight according to claim 1, characterized in that: The slope of the second inclined fin is smaller than that of the first inclined fin.

3. The heat dissipation and dustproof floodlight according to claim 1, characterized in that: The heat conductor is further provided with an extension portion extending away from the lamp installation slot, and the extension portion is provided with a wire groove communicating with the lamp installation slot.

4. The heat dissipation and dustproof floodlight according to claim 3, characterized in that: The extension portion is provided with a plurality of auxiliary heat dissipation fins extending along the radial direction of the wire slot.

5. The heat dissipation and dustproof floodlight according to claim 4, characterized in that: The vertical fins, the first inclined fins, and the second inclined fins are respectively connected to an auxiliary heat dissipation fin.

6. The heat dissipation and dustproof floodlight according to claim 3, characterized in that: The shell is connected to the extension part by bolts, and the shell is also connected to the lamp holder by bolts.

Images