A waterproof par light with a new type of heat dissipation air path

Abstract

A waterproof par light with a novel heat dissipation air path, characterized in that it comprises, in sequence, a front cover assembly located at the front of the lamp, a rear cover assembly located at the rear of the lamp, and a heat dissipation assembly located between the front cover assembly and the rear cover assembly; the rear cover assembly comprises a first waterproof cavity for accommodating a switching power supply and a display panel assembly, and a rear cover shell, an air inlet duct is formed between the first waterproof cavity and the rear cover shell; the front cover assembly comprises a second waterproof cavity for accommodating a light source assembly and a front cover shell; the heat dissipation assembly comprises a radiator and a waterproof fan located in the radiator; the radiator is provided with a plurality of heat dissipation fins radially spaced along a circumference, an air outlet duct is formed between the plurality of radially spaced heat dissipation fins; the air inlet duct and the air outlet duct form convection through the waterproof fan.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lamps, and more specifically to a waterproof par lamp with a novel air path. Background Art

[0002] PAR lamps are also called parabolic aluminum reflector lamps. Their design feature is that the light source is encapsulated in a reflective cup, which ensures that the light can be concentrated and irradiated inside a specific area, thereby enhancing the light intensity in that area.

[0003] However, the current par lights on the market usually only rely on heat sinks and heat sink fins to achieve heat dissipation. Since the power of the lamp beads inside the par lights is high, a lot of heat will be generated during use. This single heat dissipation method is not effective, often resulting in excessive temperatures, which may damage the lamp beads. In addition, in order to improve the heat dissipation performance, multiple heat dissipation holes are usually set on the outer shell of the par light, but this design also sacrifices its waterproof performance, making the par light have certain safety hazards when used in humid environments. Summary of the invention

[0004] The utility model provides a waterproof par light with a novel heat dissipation air path, so as to solve the problems of poor heat dissipation performance and poor waterproof performance of the existing par lights proposed in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A waterproof par light with a novel heat dissipation air path, which comprises a front cover assembly located at the front of the light fixture, a rear cover assembly located at the rear of the light fixture, and a heat dissipation assembly located between the front cover assembly and the rear cover assembly;

[0007] The rear cover assembly comprises a first waterproof cavity for accommodating the switch power supply and the display panel assembly, and a rear cover shell, wherein an air inlet duct is formed between the first waterproof cavity and the rear cover shell;

[0008] The front cover assembly comprises a second waterproof cavity for accommodating the light source assembly and a front cover shell;

[0009] The heat dissipation component includes a radiator and a waterproof fan located in the radiator;

[0010] The radiator is provided with a plurality of radiating fins which are radially spaced apart along the circumference, and an air outlet duct is formed between the plurality of radiating fins which are radially spaced apart;

[0011] The air inlet and outlet ducts form convection through waterproof fans.

[0012] As a further improvement of the utility model, a plurality of air inlet holes 1 distributed at intervals along the circumference are provided on the surface of the rear cover shell.

[0013] As a further improvement of the present invention, the air inlet hole 1 is in the shape of an elongated strip.

[0014] As a further improvement of the utility model, a plurality of air inlet holes 2 are provided on the surface of the rear cover shell and are distributed at intervals along the circumference. The air inlet holes 2 are used to avoid air-locking fasteners for attaching the rear cover shell and are also used for air intake.

[0015] As a further improvement of the present invention, the second air inlet hole is a circular hole with a strip hole.

[0016] As a further improvement of the utility model, it also includes a decorative ring located on the rear cover shell and adapted to the plurality of air inlet holes distributed at intervals along the circumference.

[0017] As a further improvement of the present invention, the air inlet hole 1 and the air inlet hole 2 are located on different circumferences of the surface of the rear cover shell.

[0018] As a further improvement of the present invention, the rear cover assembly further includes a partition plate located between the rear cover shell and the waterproof fan, and the partition plate abuts against the rear cover shell to form a first waterproof cavity.

[0019] As a further improvement of the present invention, the radiator further comprises a cover body located between the radiating fins and the front cover shell, and the cover body abuts against the front cover shell to form a second waterproof cavity.

[0020] As a further improvement of the present invention, the first waterproof cavity is a cylinder, the rear cover shell is a cylindrical shell, and the air inlet duct is an annular channel formed between the first waterproof cavity and the rear cover shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 It is a three-dimensional exploded view of the utility model;

[0023] Figure 3 This is a partial enlarged view of point A;

[0024] Figure 4 It is a top view of the utility model;

[0025] Figure 5 for Figure 4 Cross-sectional view in the BB direction;

[0026] Figure 6 is a three-dimensional diagram of a rear cover housing;

[0027] In the figure: rear cover assembly 1; first waterproof cavity 11; rear cover shell 12; air inlet hole 121; air inlet hole 2 122; circular hole 1221; strip hole 1222; inclined circular ring 123; annular groove 124; air inlet duct 13; decorative ring 14; through hole 141; long strip protrusion 142; spacer 15; waterproof sealing ring 151; display panel assembly 16; front cover assembly 2; second waterproof cavity 21; front cover shell 22; waterproof sealing ring 221; light source assembly 23; heat dissipation assembly 3; radiator 31; heat dissipation fins 311; cover body 312; waterproof fan 32; air outlet duct 33. DETAILED DESCRIPTION

[0028] Combined with Figure 1 and attached Figure 5A waterproof par light with a novel heat dissipation air path comprises, in sequence, a front cover assembly 2 located at the front of the lamp, a rear cover assembly 1 located at the rear of the lamp, and a heat dissipation assembly 3 located between the front cover assembly 2 and the rear cover assembly 1; the rear cover assembly 1 comprises a first waterproof cavity 11 for accommodating a switching power supply and a display panel assembly 16, and a rear cover shell 12, and an air inlet duct 13 is formed between the first waterproof cavity 11 and the rear cover shell 12; the front cover assembly 2 comprises a second waterproof cavity 21 for accommodating a light source assembly 23 and a front cover shell 22; the heat dissipation assembly 3 comprises a radiator 31 and a waterproof fan 32 located in the radiator; the radiator 31 is provided with a plurality of heat dissipation fins 311 radially spaced along the circumference, and an air outlet duct 33 is formed between the plurality of heat dissipation fins 311 radially spaced apart; the air inlet duct 13 and the air outlet duct 33 form convection through the waterproof fan 32. The first waterproof cavity 11 is located inside the rear cover shell 12, and the switching power supply and display panel assembly 16 is located inside the first waterproof cavity 11; the first waterproof cavity 11 is coaxially installed with the rear cover shell 12, and the upper surface of the first waterproof cavity 11 abuts against the inner plane of the rear cover shell 12; the hollow part between the inner side surface of the rear cover shell 12 and the outer side surface of the first waterproof cavity 11 constitutes the air inlet duct 13; the second waterproof cavity 21 is located inside the front cover shell 22, and the front cover shell 22 abuts against one end of the radiator 31 to form the second waterproof cavity 21; the light source assembly 23 is located inside the second waterproof cavity 21, and the heat dissipation fins 311 are located between the first waterproof cavity 11 and the second waterproof cavity 21, and the heat dissipation fins 311 are sheet-like flat plates, which are radially distributed along the circumferential direction; and the gap between every two adjacent heat dissipation fins 311 forms an air outlet duct 33; the waterproof fan 32 is installed in the groove in the middle of the radiator 31. The beneficial effect of this embodiment is that cold air enters the air inlet duct 13 from the outside, flows through the outside of the first waterproof cavity 11, and then continues to flow downward and is transported to the radiator 31 by the waterproof fan 32, flows through the heat dissipation fins 311, and then is discharged from the lamp through the air outlet duct 33. The air inlet duct 13 absorbs the external cold air through the rear cover shell 12, and the air outlet duct 33 is located in the heat dissipation component 3 provided in the middle; the design of the air inlet duct 13 away from the air outlet duct 33 significantly improves the heat dissipation effect of the lamp, thereby avoiding the common situation of air paths interfering and mixing with each other in traditional lamps. The first waterproof cavity 11, the second waterproof cavity 21 and the air inlet duct 13 are all independent spaces, so while ensuring that the lamp has a heat dissipation effect, it also has a good waterproof effect; the heat dissipation air path of the lamp flows through the outside of the first waterproof cavity 11, and the heat emitted by the switching power supply and the display panel assembly 16 is taken away by the cold air flowing through the outside of the first waterproof cavity 11; the second waterproof cavity 21 is a space formed by the abutment of the radiator 31 and the front cover shell 22, and the heat emitted by the light source assembly 23 can be quickly transferred to the radiator 31 and taken away by the cold air flowing through the radiator 31.

[0029] As a new implementation method, combined with the Figure 1 and attached Figure 2 , the surface of the rear cover shell 12 is provided with a plurality of air inlet holes 121 distributed along the circumference. The air inlet holes 121 are located outside the first waterproof cavity 11, and are distributed on the inclined circular ring 123 on the relatively outer side of the rear cover shell 12; and the air inlet holes 121 are evenly distributed on the inclined circular ring 123 along the circumference; the air inlet holes 121 penetrate the rear cover shell 12 and connect to the air inlet duct 13; the opening width of the air inlet holes 121 is smaller than the width of the inclined circular ring 123 projected on the horizontal plane. The beneficial effect of this embodiment is that the provision of a plurality of air inlet holes 121 is conducive to more external cold air entering the air inlet duct 13; the plurality of air inlet holes 121 are distributed along the circumference, and can absorb cold air from the outside into the air inlet duct 13 at 360 degrees; and the air inlet holes 121 are far away from the air outlet duct 33, so that the exhausted hot air is not easily recirculated and inhaled by the air inlet holes 121.

[0030] Based on the above content, in this embodiment, combined with the attached Figure 1 and attached Figure 2 , the air inlet hole 121 is in the shape of a long strip. A plurality of connecting partitions are provided in the air inlet duct 13, which are used to connect the first waterproof cavity 11 and the rear cover shell 12; an air inlet hole 121 is distributed between every two adjacent connecting partitions, so that the plurality of air inlet holes 121 are evenly distributed on the inclined ring 123 on the relatively outer side of the rear cover shell 12; and the height of each connecting partition is less than the height of the first waterproof cavity 11, so that the air inlet duct 13 is a connected whole. The beneficial effect of this embodiment is that the long strip-shaped air inlet hole 121 can inhale the external cold air with the maximum air inlet area, thereby increasing the air volume entering the air inlet duct 13.

[0031] As a new implementation method, combined with the Figure 2 and attached Figure 3 The surface of the rear cover shell 12 is provided with a plurality of air inlet holes 122 spaced along the circumference. The air inlet holes 122 are used to avoid airflow through the fasteners for locking the rear cover shell 12 and to allow air to enter. An annular groove 124 is provided on the periphery of the rear cover shell 12. The annular groove 124 is located at the outer edge of the first waterproof cavity 11. The air inlet holes 122 are distributed on the annular groove 124 on the inner side of the rear cover shell 12. The air inlet holes 122 and the air inlet holes 121 are staggered. The air inlet holes 122 include through holes for fasteners for fixing the rear cover shell 12. The air inlet holes 122 are connected to the hollow part between the outer surface of the first waterproof cavity 11 and the inner surface of the rear cover shell 12, that is, connected to the air inlet duct 13. The beneficial effect of this embodiment is that an air inlet hole 122 is cleverly added to the through hole of the fastener originally used to avoid airflow and fix the rear cover shell 12, which not only retains the function of the air-avoiding fastener, but also significantly increases the air intake of the air inlet duct 13, thereby optimizing the heat dissipation effect.

[0032] Based on the above content, in this embodiment, combined with the attached Figure 2 and attached Figure 3 , the second air inlet hole 122 is a circular hole 1221 with a strip hole 1222. The second air inlet holes 122 are evenly distributed on the annular groove 124, and the round hole 1221 of the second air inlet hole 122 is used to allow the fastener to enter and fix the rear cover shell 12; the depth of the strip hole 1222 of the second air inlet hole 122 is less than the depth of the round hole 1221, the strip hole 1222 is hollow, and is connected to the air inlet duct 13; the length of the strip hole 1222 is slightly larger than the diameter of the round hole 1221, and the center of the strip hole 1222 coincides with the center of the round hole 1221. The beneficial effect of this embodiment is that the hollowed-out strip holes 1222 increase the air inlet channel, the hollowed-out strip holes 1222 are distributed on both sides of the round hole 1221, and will not hinder the installation of the fastener.

[0033] Based on the above content, in this embodiment, combined with the attached Figure 2 , and further includes a decorative ring 14 located on the rear cover shell 12 and adapted to a plurality of air inlet holes 122 spaced apart along the circumference. The air inlet holes 122 are distributed in an annular groove 124, and the annular groove 124 is inclined toward the center of the circle; a plurality of through holes 141 are provided on the decorative ring 14, and the plurality of through holes 141 correspond to the plurality of air inlet holes 122 one by one; the through holes 141 are circular, and the diameter of the through holes 141 is equal to the diameter of the circular holes of the air inlet holes 122; the width of the decorative ring 14 is consistent with the width of the annular groove 124, but the height of the decorative ring 14 is less than the depth of the annular groove 124; the decorative ring 14 is installed in the annular groove 124, and the through holes 141 are installed in alignment with the air inlet holes 122; the interior of the decorative ring 14 is hollow. The beneficial effect of this embodiment is that the hollow decorative ring 14 allows the second air inlet hole 122 to smoothly inhale more cold air; the decorative ring 14 is installed in the annular groove 124, located above the second air inlet hole 122, and can block the hollow strip hole 1222 of the second air inlet hole 122, making the appearance of the lamp more beautiful.

[0034] Preferably, the outer surface of the decorative ring 14 is further provided with a circle of decorative long strip protrusions 142 evenly distributed along the circumference to increase the sense of design and aesthetics.

[0035] Or as another implementation, the long strip protrusion 142 on the decorative ring 14 can be changed into an opening for ventilation, so as to increase the number of air inlet holes and allow more cold air to enter the air inlet duct 13 .

[0036] Based on the above content, in this embodiment, combined with the attached Figure 1 and attached Figure 2, the air inlet hole 121 and the air inlet hole 2 122 are located on different circumferences on the surface of the rear cover shell 12. The air inlet hole 121 is located on the inclined circular ring 123 of the rear cover shell 12, and the air inlet hole 2 122 is located on the annular groove 124 of the rear cover shell 12; the inclined circular ring 123 is located on the outer edge of the annular groove 124, the air inlet hole 121 and the air inlet hole 2 122 are respectively located on different inclined circular surfaces, and the air inlet directions of the air inlet hole 121 and the air inlet hole 2 122 are different and do not interfere with each other. The beneficial effect of this embodiment is that the air inlet hole 121 and the air inlet hole 2 122 can inhale cold air from different directions; the air inlet hole 121 and the air inlet hole 2 122 are respectively located on different circumferences, which can significantly increase the air volume entering the air inlet duct 13.

[0037] As a new implementation method, combined with the Figure 5 The rear cover assembly 1 further includes a spacer plate 15 located between the rear cover shell 12 and the waterproof fan 32 , and the spacer plate 15 abuts against the rear cover shell 12 to form a first waterproof cavity 11 . The partition plate 15 is provided with a mounting hole 2 (not marked in the figure) which corresponds one-to-one to the circular hole of the air inlet hole 2 122, and the partition plate 15 is installed inside the rear cover shell 12; a groove for installing a waterproof sealing ring 151 is reserved in the abutting part between the partition plate 15 and the rear cover shell 12, so that a sealed cavity, namely the first waterproof cavity 11, is formed between the rear cover shell 12 and the partition plate 15; the diameter of the partition plate 15 is smaller than the diameter of the open end of the rear cover shell 12, so that there is a gap between the partition plate 15 and the rear cover shell 12 for cold air to pass; and there are multiple through holes for ventilation on the partition plate 15 (not marked in the figure), which can make the cold air in the air inlet duct 13 enter the waterproof fan 32 more quickly; the gap between the partition plate 15 and the rear cover shell 12 and the through holes provided on the partition plate can make the cold air quickly enter the waterproof fan 32, and be transported to the heat dissipation fins 311 by the waterproof fan, take away the heat inside the lamp, and discharge the heat from the lamp through the air outlet duct 33, so as to better realize the heat dissipation function. The beneficial effect of this embodiment is that the partition plate 15 abuts against the rear cover shell 12 to form a first waterproof cavity 11, which separates the air inlet duct 13 from the first waterproof cavity 11, and can better protect the components located in the cavity, and prevent water vapor from entering and causing short circuit or failure of the components located inside the first waterproof cavity.

[0038] As a new implementation method, combined with the Figure 5The heat sink 31 also includes a cover 312 located between the heat dissipation fins 311 and the front cover shell 22, and the cover 312 abuts against the front cover shell 22 to form a second waterproof cavity 21. The heat dissipation fins 311 are radially distributed along the circumference, and the heat dissipation fins 311 are located between the cover 312 and the first waterproof cavity 11; the cover 312 is a cylindrical shell with an opening at the bottom, the front cover shell 22 is a cylindrical shell, and the front cover shell 22 is adapted to the cover 312; the open end of the cover 312 abuts and fixes with the front cover shell 22, and the part where the front cover shell 22 abuts against the cover 312 is provided with a groove for installing a waterproof sealing ring 221, so that the second waterproof cavity 21 has better waterproof performance; the light source assembly 23 is installed in the second waterproof cavity 21, and the light source assembly 23 is tightly attached to the cover 312, so that the heat generated by the light source assembly 23 can be quickly transferred to the heat dissipation fins 311, forming a good heat dissipation effect. The beneficial effect of this embodiment is that the formed second waterproof cavity 21 can better protect the light source assembly 23 and prevent water vapor from entering and affecting the service life of the light source assembly 23 .

[0039] As a new implementation method, combined with the Figure 5 and attached Figure 6 The first waterproof cavity 11 is a cylinder, the rear cover shell 12 is a cylindrical shell, and the air inlet duct 13 is an annular channel formed between the first waterproof cavity 11 and the rear cover shell 12. The height of the first waterproof cavity 11 is less than the height of the rear cover shell 12, and the first waterproof cavity 11 is located inside the rear cover shell 12; the air inlet duct 13 is an annular channel surrounding the outer surface of the first waterproof cavity 11 and the inner surface of the rear cover shell 12; the rear cover shell 12 is provided with a plurality of air inlet holes 121 and air inlet holes 2 122, and the air inlet holes 121 and air inlet holes 2 122 are respectively connected to the annular channel, and the annular channel is connected to the waterproof fan 32, and the waterproof fan 32 transports the cold air to the heat dissipation fins 311, and then discharges it through the air outlet duct 33 formed by the gap between the heat dissipation fins 311, thereby forming a complete air path. The beneficial effect of this embodiment is that the air inlet duct 13, as an annular channel, tightly surrounds the first waterproof cavity 11, effectively and quickly takes away the heat generated by the power switch and display panel assembly 16 located inside the first waterproof cavity 11, and the heat is quickly absorbed and taken away by the cold air flowing in the air inlet duct 13.

Claims

1. A waterproof par light with a new type of heat dissipation air path, characterized in that , comprising, in sequence, a front cover assembly located at the front of the lamp, a rear cover assembly located at the rear of the lamp, and a heat dissipation assembly located between the front cover assembly and the rear cover assembly; The rear cover assembly comprises a first waterproof cavity for accommodating the switch power supply and the display panel assembly, and a rear cover shell, wherein an air inlet duct is formed between the first waterproof cavity and the rear cover shell; The front cover assembly comprises a second waterproof cavity for accommodating the light source assembly and a front cover shell; The heat dissipation assembly includes a radiator and a waterproof fan located inside the radiator; The radiator is provided with a plurality of radiating fins which are radially spaced apart along the circumference, and an air outlet duct is formed between the plurality of radiating fins which are radially spaced apart; The air inlet duct and the air outlet duct form convection through the waterproof fan.

2. A waterproof par light with a novel heat dissipation air path according to claim 1, characterized in that: The surface of the rear cover shell is provided with a plurality of air inlet holes which are distributed at intervals along the circumference.

3. A waterproof par light with a novel heat dissipation air path according to claim 2, characterized in that: The first air inlet hole is in the shape of an elongated strip.

4. A waterproof par light with a novel heat dissipation air path according to claim 2, characterized in that: The surface of the rear cover shell is provided with a plurality of air inlet holes 2 which are distributed at intervals along the circumference. The air inlet holes 2 are used to avoid air-locking fasteners of the rear cover shell and to allow air in at the same time.

5. A waterproof par light with a novel heat dissipation air path according to claim 4, characterized in that: The second air inlet hole is a circular hole with a strip hole.

6. A waterproof par light with a novel heat dissipation air path according to claim 5, characterized in that: It also includes a decorative ring located on the rear cover shell and adapted to fit the plurality of air inlet holes distributed at intervals along the circumference.

7. A waterproof par light with a novel heat dissipation air path according to claim 4, characterized in that: The air inlet hole 1 and the air inlet hole 2 are located on different circumferences of the surface of the rear cover shell.

8. The waterproof par light with a novel heat dissipation air path according to claim 1, characterized in that: The rear cover assembly further includes a spacer plate located between the rear cover shell and the waterproof fan, and the spacer plate abuts against the rear cover shell to form the first waterproof cavity.

9. The waterproof par light with a novel heat dissipation air path according to claim 1, characterized in that: The radiator further comprises a cover body located between the radiating fins and the front cover shell, wherein the cover body abuts against the front cover shell to form the second waterproof cavity.

10. The waterproof par light with a novel heat dissipation air path according to claim 1, characterized in that: The first waterproof cavity is a cylinder, the rear cover shell is a cylindrical shell, and the air inlet duct is an annular channel formed between the first waterproof cavity and the rear cover shell.

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