CN212776934U

CN212776934U - Heat radiation structure of LED light source

Info

Publication number: CN212776934U
Application number: CN202021226392.0U
Authority: CN
Inventors: 黄易龙; 张焱; 段绪洲
Original assignee: Suzhou Muran Photoelectric Technology Co ltd
Current assignee: Suzhou Muran Photoelectric Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-23
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a heat dissipation structure of an LED light source, which comprises a lower shell, an upper shell and a light-emitting device; a first annular flange is arranged in the opening of the lower shell; the light-emitting device is arranged in the first annular flange; a first inclined plane is arranged on the top surface of the first annular flange along the circumferential direction; the inclined upper end of the first inclined plane is close to the central position of the first annular flange; a plurality of grooves are formed in the first inclined plane at intervals along the circumferential direction; the groove extends from the inclined upper end of the first inclined plane to the inclined lower end of the first inclined plane; a second annular flange is arranged in the opening of the upper shell; a second inclined plane matched with the first inclined plane is arranged on the bottom surface of the second annular flange along the circumferential direction; a first vent hole is formed in the second inclined surface corresponding to the groove; the first vent hole is communicated with the interior of the upper shell; and a second vent hole is formed in the outer wall of the lower shell. The utility model discloses have better heat dissipation function, and can prevent that the rainwater from getting into the inside of LED light source, satisfy the LED light source at outdoor application demand.

Description

Heat radiation structure of LED light source

Technical Field

The utility model relates to a LED lighting source technical field especially relates to a heat radiation structure of LED light source.

Background

The use of LED light sources as lighting fixtures is becoming more and more common. The LED light source can generate certain heat during illumination, if the heat cannot be timely dissipated, the light emitting efficiency is reduced, the service life is shortened, and the like. In some LED light sources among the prior art, there is a plurality of ventilation hole at the lamp shade processing, utilizes the ventilation hole to make the air can circulate in the inside and outside of lamp shade to the realization is discharged the heat in the lamp shade. However, for the outdoor LED light source, the LED light source has no good rainproof measure, the rainproof effect is poor, rainwater easily enters the lampshade through the vent hole in rainy days, and components inside the lampshade are in contact with the rainwater, so that the risk of damage is caused.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists above-mentioned, the utility model aims at: the heat dissipation structure of the LED light source has a good heat dissipation function, can prevent rainwater from entering the LED light source, and meets the outdoor application requirement of the LED light source.

The technical solution of the utility model is realized like this: a heat dissipation structure of an LED light source comprises a lower shell with an opening at the top, an upper shell with an opening at the bottom and a light-emitting device; a first annular flange is arranged in the opening of the lower shell; the light emitting device is arranged in the first annular flange; a first inclined plane is arranged on the top surface of the first annular flange along the circumferential direction; the inclined upper end of the first inclined plane is close to the central position of the first annular flange; a plurality of grooves are formed in the first inclined plane at intervals along the circumferential direction; the groove extends from the inclined upper end of the first inclined plane to the inclined lower end of the first inclined plane; a second annular flange is arranged in the opening of the upper shell; a second inclined plane matched with the first inclined plane is arranged on the bottom surface of the second annular flange along the circumferential direction; a first vent hole is formed in the second inclined surface corresponding to the groove; the first vent hole is communicated with the interior of the upper shell; and a second vent hole is formed in the outer wall of the lower shell.

Further, the upper housing includes a housing sidewall and a housing top wall; and the side wall of the shell and/or the top wall of the shell are/is provided with light transmission parts.

Further, the light-emitting device comprises a heat radiation body and an LED luminous body arranged on the heat radiation body; the heat radiation body is connected with the first annular flange; the LED luminous body is arranged on the top of the heat radiation body.

Furthermore, the heat dissipation body comprises a heat dissipation bottom plate and a heat dissipation sheet set arranged on the bottom surface of the heat dissipation bottom plate.

Furthermore, the bottom of the lower shell is provided with a third ventilation hole.

Further, the upper shell and the lower shell are fixedly connected through bolts.

Further, the heat dissipation structure of the LED light source comprises a bracket disposed on the lower housing.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model discloses a cooperation of first annular flange and the annular flange of second is used, and the first inclined plane on the first annular flange and the second inclined plane on the annular flange of second mutually support when the assembly, because first inclined plane has certain slope, the rainwater is difficult for entering into the inside of last casing from the clearance between first inclined plane and the second inclined plane to can satisfy the LED light source at outdoor rain-proof water demand.

2. The utility model discloses a cooperation in recess and first ventilation hole is used for the upper housing is inside and outside to communicate mutually, and the produced heat of LED luminous body can be discharged via first ventilation hole and recess, and the rainwater also is difficult to see through inside recess and the first ventilation hole enters into the upper housing, and the practicality is strong.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

fig. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic three-dimensional structure of FIG. 1 after assembly;

FIG. 3 is a front sectional view of FIG. 2;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a schematic three-dimensional structure diagram of the upper housing of the present invention;

FIG. 6 is a front sectional view of FIG. 5;

fig. 7 is a schematic three-dimensional structure diagram of the lower housing of the present invention;

FIG. 8 is a front sectional view of FIG. 7;

FIG. 9 is a schematic three-dimensional structure of FIG. 7 from another perspective;

fig. 10 is a schematic three-dimensional structure diagram of a heat sink according to the present invention;

wherein: 1. a lower housing; 11. a first annular flange; 12. a first inclined plane; 121. a groove; 13. a second vent hole; 14. a third vent hole; 2. an upper housing; 21. a second annular flange; 22. a second inclined plane; 221. a first vent hole; 3. an LED light emitter; 4. a heat dissipation base plate; 41. a heat sink; 42. threading holes; 5. and (4) a bracket.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Fig. 1-4 show a heat dissipation structure of an LED light source according to the present invention, which includes a lower case 1 with an opening at the top, an upper case 2 with an opening at the bottom, and a light emitting device. The lower case 1 and the upper case 2 are combined with each other to form a complete case structure. The lower case 1 and the upper case 2 are fixedly connected by bolts. A first annular flange 11 is formed in the opening of the lower case 1. The first annular flange 11 is formed integrally with the lower housing 1. The top surface of the first annular flange 11 is exposed above the lower casing 1. The light emitting device is mounted in the first annular flange 11, and is fixedly connected to the first annular flange 11 by means of screws, bonding, or the like. The light-emitting device is used for emitting light and generating heat when emitting light. A first inclined surface 12 is formed on the top surface of the first annular flange 11 in the circumferential direction. The inclined upper end of the first inclined surface 12 is located near the center of the first annular flange 11. The angle of the first inclined surface 12 to the horizontal is preferably 20 °. A plurality of grooves 121 are formed on the first inclined surface 12 at intervals along the circumferential direction thereof, and the grooves 121 extend from the inclined upper end of the first inclined surface 12 to the inclined lower end of the first inclined surface 12. The groove 121 may have a closed structure at both ends or an open structure at a lower end thereof. A second annular flange 21 is formed in the opening of the upper housing 2. The second annular flange 21 is integrally formed with the upper case 2. A second inclined surface 22 (shown in fig. 5 and 6) is formed on the bottom surface of the second annular flange 21 in the circumferential direction to match the first inclined surface 12. The second inclined surface 22 is formed with a first vent hole 221 corresponding to the groove 121. The first vent hole 221 penetrates the second annular flange 21 so that the first vent hole 221 communicates with the inside of the upper case 2. After the lower case 1 and the upper case 2 are assembled with each other, the first inclined surface 12 is attached to the second inclined surface 22, and the first vent hole 221 corresponds to the groove 121 up and down. External air flow may enter the upper case 2 through the groove 121, the first vent hole 221, or air flow inside the upper case 2 may exit the upper case 2 through the first vent hole 221, the groove 121. The air flow inside and outside the upper case 2 can be exchanged and flowed, so that the heat inside the upper case 2 can be discharged. A plurality of second ventilation holes 13 are formed in the outer wall of the lower casing 1, and the air flow enters and exits the lower casing 1 through the second ventilation holes 13, so that the heat in the lower casing 1 can be discharged through the second ventilation holes 13.

The light emitting device of the present embodiment includes a heat sink and an LED light emitter 2 mounted on the heat sink. The heat radiator is connected with the first annular flange 11 by means of screws, glue, and the like. The LED luminous body 2 is arranged on the top of the heat radiation body. This LED luminous element 2 is the conventional part among the prior art, including the base plate, install LED lamp pearl on the base plate and with the connecting wire that external power supply is connected. A part of heat generated by the LED light 2 during operation is dissipated into the upper case 2, and the other part is conducted to the heat sink. The heat in the upper case 2 is discharged through the first ventilation holes 221 and the grooves 121 by the air flow. The heat conducted to the heat radiating body is discharged through the air flow second vent hole 13.

As shown in fig. 5 and 6, the upper case 2 includes a case side wall and a case top wall. According to the practical application requirement, the light-transmitting part is formed on the side wall of the shell and/or the top wall of the shell. The light emitted by the LED lamp bead is emitted through the light-transmitting part. The upper casing 2 may be made of a transparent material, or a transparent material may be embedded in the side wall and/or the top wall of the upper casing.

The radiator comprises a radiating bottom plate 4 and a radiating fin group arranged on the bottom surface of the radiating bottom plate 4. The fin group is composed of a plurality of fins 41 arranged at intervals. The material of the heat dissipation base plate 4 and the heat dissipation fins 41 is aluminum or copper. Wherein, a threading hole 42 is processed on the heat dissipation bottom plate 4, and the connecting wires in the LED luminary 2 extend into the lower casing 1 through the threading hole 42. The power supply end of the external power supply is connected with the connecting wire in the lower shell 1 to supply power to the LED lamp beads

Wherein, a plurality of third ventilation holes 14 are processed at the bottom of the lower shell 1. This third ventilation hole 14 plays the effect of promoting the interior outer air flow of casing 1 down on the one hand, and on the other hand when the rainwater enters into casing 1 down, the rainwater can be followed third ventilation hole 14 and discharged. A bracket 5 is attached to the lower case 1, and the lower case 1 can be fixed outdoors by the bracket 5.

In outdoor applications, a part of the heat generated by the LED luminary 2 during operation is dissipated into the upper case 2, and another part is conducted to the heat dissipation base plate 4 and the heat dissipation fins 41. The heat in the upper case 2 is discharged through the first ventilation holes 221 and the grooves 121 by the air flow. The heat conducted to the heat radiating base plate 4 and the heat radiating fins 41 is discharged through the second ventilation holes 13 and the third ventilation holes 14 by the air flow.

After the lower shell 1 and the upper shell 2 are assembled, the first inclined surface 12 on the first annular flange 11 and the second inclined surface 22 on the second annular flange 21 are matched with each other, and since the first inclined surface 12 has a certain gradient, rainwater is not easy to enter the inner part of the upper shell 2 from a gap between the first inclined surface 12 and the second inclined surface 22 in rainy days. Rainwater is difficult to penetrate through the groove 121 and the first ventilation hole 221 to enter the upper shell 1, so that the outdoor rainwater-proof requirement of the LED light source can be met.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification does, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. A heat dissipation structure of an LED light source comprises a lower shell with an opening at the top, an upper shell with an opening at the bottom and a light-emitting device; the method is characterized in that: a first annular flange is arranged in the opening of the lower shell; the light emitting device is arranged in the first annular flange; a first inclined plane is arranged on the top surface of the first annular flange along the circumferential direction; the inclined upper end of the first inclined plane is close to the central position of the first annular flange; a plurality of grooves are formed in the first inclined plane at intervals along the circumferential direction; the groove extends from the inclined upper end of the first inclined plane to the inclined lower end of the first inclined plane; a second annular flange is arranged in the opening of the upper shell; a second inclined plane matched with the first inclined plane is arranged on the bottom surface of the second annular flange along the circumferential direction; a first vent hole is formed in the second inclined surface corresponding to the groove; the first vent hole is communicated with the interior of the upper shell; and a second vent hole is formed in the outer wall of the lower shell.

2. The heat dissipation structure of an LED light source according to claim 1, wherein: the upper housing includes a housing sidewall and a housing top wall; and the side wall of the shell and/or the top wall of the shell are/is provided with light transmission parts.

3. The heat dissipation structure of an LED light source according to claim 1, wherein: the light-emitting device comprises a heat radiation body and an LED luminous body arranged on the heat radiation body; the heat radiation body is connected with the first annular flange; the LED luminous body is arranged on the top of the heat radiation body.

4. The heat dissipation structure of an LED light source according to claim 3, wherein: the heat dissipation body comprises a heat dissipation bottom plate and a heat dissipation sheet set arranged on the bottom surface of the heat dissipation bottom plate.

5. The heat dissipation structure of an LED light source according to claim 1, wherein: and a third ventilation hole is formed in the bottom of the lower shell.

6. The heat dissipation structure of an LED light source according to claim 1, wherein: the upper shell and the lower shell are fixedly connected through bolts.

7. The heat dissipation structure of an LED light source according to claim 1, wherein: the LED light source heat dissipation structure comprises a support arranged on the lower shell.